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rordenlab / dcm2niix

dcm2nii DICOM to NIfTI converter: compiled versions available from NITRC
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Use tag: (0020, 0032) Image Position (Patient) instead of "SliceThickness" to determine the z resolution. #555

Closed ZhongkangLu closed 2 years ago

ZhongkangLu commented 2 years ago

The single DICOM file, which contains multiple slices, has "SliceThickness = 0.5".

Some other tags are shown as following:

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1540.500000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1540.25] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1540.25] (0018, 9327) Table Position FD: 127.625

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 511 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 511]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1540.250000]

It can be seen that the interval between slices on z direction is 0.25. As a result, using "SliceThickness = 0.5" as the resolution on z direction is wrong. I hope dcm2niix team can solve the issue.

neurolabusc commented 2 years ago

dcm2niix does leverage Image Position Patient (0020, 0032) as this is the most robust way to infer distance between slices.

Your description suggests that this is an enhanced DICOM image (multiple 2D slices stored in a single file) using the CT modality. I have only seen a handful of examples of enhanced CT DICOM, and only from a single manufacturer (Siemens). Note each manufacturer has interpreted DICOM differently). I do provide a validation dataset showing that dcm2niix extracts inter-slice distances correctly for enhanced DICOMs created by Canon, Philips, and Siemens.

Without a sample, I can not diagnose your issue. Does dcm2niix only generate a single image for this file, or is it segmenting these based on a difference in acquisition parameters (e.g. different exposures with interleaved slice locations). Feel free to share a sample dataset by sending a link to a dataset to the email address in my avatar, alternatively feel free to make a pull request to update the code.

ZhongkangLu commented 2 years ago

Dear Rorden, Thanks for your prompt response! Due to copyright issue, I cannot share the data with you. You are right, it is an enhanced DICOM image (multiple 2D slices stored in a single file) using the CT modality. The DICOM image has a tag "Slice Thickness" = 0.5, and there is also an array of 512 "Per Frame Functional Groups Sequence" tags (512 slices). Each of them has an "Image Position Patient" tag. The interval of "Image Position Patient" tags is [0, 0, 0.25]. dcm2niix generated one single NIFTI image from the DICOM file. The NIFTI image has z resolution = 0.5, but the correct value should be 0.25. So, I think in dcm2niix "Slice Thickness" override "Image Position Patient". I hope the description may help you figuring out the issue. Best,Zhongkang On Tuesday, 2 November 2021, 09:17:50 pm SGT, Chris Rorden @.***> wrote:

dcm2niix does leverage Image Position Patient (0020, 0032) as this is the most robust way to infer distance between slices.

Your description suggests that this is an enhanced DICOM image (multiple 2D slices stored in a single file) using the CT modality. I have only seen a handful of examples of enhanced CT DICOM, and only from a single manufacturer (Siemens). Note each manufacturer has interpreted DICOM differently). I do provide a validation dataset showing that dcm2niix extracts inter-slice distances correctly for enhanced DICOMs created by Canon, Philips, and Siemens.

Without a sample, I can not diagnose your issue. Does dcm2niix only generate a single image for this file, or is it segmenting these based on a difference in acquisition parameters (e.g. different exposures with interleaved slice locations). Feel free to share a sample dataset by sending a link to a dataset to the email address in my avatar, alternatively feel free to make a pull request to update the code.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe. Triage notifications on the go with GitHub Mobile for iOS or Android.

neurolabusc commented 2 years ago

What is the manufacturer (Canon, GE, Philips, Siemens, UIH)? Can you or the manufacturer acquire data on a phantom that illustrates the issue? Again, the default behavior of dcm2niix is to use image position patient, so the behavior you describe is atypical. Without an exemplar, I am unable to give further advice.

ZhongkangLu commented 2 years ago

The Scanner is Toshiba. I attached the header information in the email, which is generated by pydicom. Maybe I can send you a DICOM file with a all-zero image array, but it still needs a lot of administrative procedures. On Tuesday, 2 November 2021, 11:06:18 pm SGT, Chris Rorden @.***> wrote:

What is the manufacturer (Canon, GE, Philips, Siemens, UIH)? Can you or the manufacturer acquire data on a phantom that illustrates the issue? Again, the default behavior of dcm2niix is to use image position patient, so the behavior you describe is atypical. Without an exemplar, I am unable to give further advice.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe. Triage notifications on the go with GitHub Mobile for iOS or Android.

Dataset.file_meta ------------------------------- (0002, 0000) File Meta Information Group Length UL: 218 (0002, 0001) File Meta Information Version OB: b'\x00\x01' (0002, 0002) Media Storage SOP Class UID UI: Enhanced CT Image Storage (0002, 0003) Media Storage SOP Instance UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.58.0 (0002, 0010) Transfer Syntax UID UI: Explicit VR Little Endian (0002, 0012) Implementation Class UID UI: 1.3.6.1.4.1.5962.99.2 (0002, 0013) Implementation Version Name SH: 'PIXELMEDJAVA001' (0002, 0016) Source Application Entity Title AE: 'Cleaner'

(0008, 0008) Image Type CS: ['ORIGINAL', 'PRIMARY', 'CARDIAC_CTA'] (0008, 0016) SOP Class UID UI: Enhanced CT Image Storage (0008, 0018) SOP Instance UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.58.0 (0008, 0020) Study Date DA: '20150825' (0008, 0021) Series Date DA: '20150825' (0008, 0022) Acquisition Date DA: '20150825' (0008, 0023) Content Date DA: '20150825' (0008, 002a) Acquisition DateTime DT: '20150825100707.009' (0008, 0030) Study Time TM: '095825.000' (0008, 0031) Series Time TM: '100609.004' (0008, 0032) Acquisition Time TM: '100701.070' (0008, 0033) Content Time TM: '100707.009' (0008, 0050) Accession Number SH: '' (0008, 0060) Modality CS: 'CT' (0008, 0070) Manufacturer LO: 'TOSHIBA' (0008, 1090) Manufacturer's Model Name LO: 'Aquilion ONE' (0008, 9205) Pixel Presentation CS: 'MONOCHROME' (0008, 9206) Volumetric Properties CS: 'VOLUME' (0008, 9207) Volume Based Calculation Technique CS: 'NONE' (0010, 0010) Patient's Name PN: 'PD001' (0010, 0020) Patient ID LO: 'PD001' (0010, 0030) Patient's Birth Date DA: '19700101' (0010, 0040) Patient's Sex CS: '' (0012, 0062) Patient Identity Removed CS: 'YES' (0012, 0063) De-identification Method LO: ['Deidentified', 'Descriptors removed', 'Patient Characteristics removed', 'Device identity removed', 'Institution identity removed', 'Dates retained', 'Structured content removed', 'Unsafe private removed', 'UIDs remapped'] (0012, 0064) De-identification Method Code Sequence 6 item(s) ---- (0008, 0100) Code Value SH: '113100' (0008, 0102) Coding Scheme Designator SH: 'DCM' (0008, 0104) Code Meaning LO: 'Basic Application Confidentiality Profile'

(0008, 0100) Code Value SH: '210004' (0008, 0102) Coding Scheme Designator SH: '99PMP' (0008, 0104) Code Meaning LO: 'Remove all descriptors'

(0008, 0100) Code Value SH: '113106' (0008, 0102) Coding Scheme Designator SH: 'DCM' (0008, 0104) Code Meaning LO: 'Retain Longitudinal Temporal Information Full Dates Option'

(0008, 0100) Code Value SH: '210010' (0008, 0102) Coding Scheme Designator SH: '99PMP' (0008, 0104) Code Meaning LO: 'Remove all structured content'

(0008, 0100) Code Value SH: '113111' (0008, 0102) Coding Scheme Designator SH: 'DCM' (0008, 0104) Code Meaning LO: 'Retain Safe Private Option'

(0008, 0100) Code Value SH: '210001' (0008, 0102) Coding Scheme Designator SH: '99PMP' (0008, 0104) Code Meaning LO: 'Remap UIDs'

(0018, 0012) Contrast/Bolus Agent Sequence 1 item(s) ---- (0008, 0100) Code Value SH: '' (0008, 0102) Coding Scheme Designator SH: '' (0008, 0104) Code Meaning LO: 'CE' (0018, 0014) Contrast/Bolus Administration Route Sequence 0 item(s) ---- (0018, 1041) Contrast/Bolus Volume DS: None (0018, 1049) Contrast/Bolus Ingredient Concentra DS: None (0018, 9337) Contrast/Bolus Agent Number US: 1 (0018, 9338) Contrast/Bolus Ingredient Code Sequence 0 item(s) ----

(0018, 1000) Device Serial Number LO: 'SN000000' (0018, 1020) Software Versions LO: 'V4.74ER016' (0018, 1081) Low R-R Value IS: None (0018, 1082) High R-R Value IS: None (0018, 1083) Intervals Acquired IS: None (0018, 1084) Intervals Rejected IS: None (0018, 5100) Patient Position CS: 'FFS' (0018, 9004) Content Qualification CS: 'PRODUCT' (0018, 9037) Cardiac Synchronization Technique CS: 'RETROSPECTIVE' (0018, 9070) Cardiac R-R Interval Specified FD: 985.0 (0018, 9073) Acquisition Duration FD: 6261.0 (0018, 9085) Cardiac Signal Source CS: 'ECG' (0018, 9169) Cardiac Beat Rejection Technique CS: 'RR_INTERVAL' (0020, 000d) Study Instance UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.3.0 (0020, 000e) Series Instance UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.59.0 (0020, 0010) Study ID SH: '' (0020, 0011) Series Number IS: '12' (0020, 0012) Acquisition Number IS: '3' (0020, 0013) Instance Number IS: '1' (0020, 0020) Patient Orientation CS: ['L', 'P'] (0020, 0052) Frame of Reference UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.5.0 (0020, 1040) Position Reference Indicator LO: '' (0020, 1041) Slice Location DS: '64.0' (0020, 9221) Dimension Organization Sequence 1 item(s) ---- (0020, 9164) Dimension Organization UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.57.0

(0020, 9222) Dimension Index Sequence 3 item(s) ---- (0020, 9164) Dimension Organization UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.57.0 (0020, 9165) Dimension Index Pointer AT: (0020, 9056) (0020, 9167) Functional Group Pointer AT: (0020, 9111)

(0020, 9164) Dimension Organization UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.57.0 (0020, 9165) Dimension Index Pointer AT: (0020, 9128) (0020, 9167) Functional Group Pointer AT: (0020, 9111)

(0020, 9164) Dimension Organization UID UI: 1.3.6.1.4.1.5962.99.1.3314680212.1657825391.1635402285460.57.0 (0020, 9165) Dimension Index Pointer AT: (0020, 9057) (0020, 9167) Functional Group Pointer AT: (0020, 9111)

(0028, 0002) Samples per Pixel US: 1 (0028, 0004) Photometric Interpretation CS: 'MONOCHROME2' (0028, 0008) Number of Frames IS: '512' (0028, 0010) Rows US: 512 (0028, 0011) Columns US: 512 (0028, 0100) Bits Allocated US: 16 (0028, 0101) Bits Stored US: 16 (0028, 0102) High Bit US: 15 (0028, 0103) Pixel Representation US: 1 (0028, 2110) Lossy Image Compression CS: '00' (0040, 0002) Scheduled Procedure Step Start Date DA: '20150825' (0040, 0003) Scheduled Procedure Step Start Time TM: '084000' (0040, 0004) Scheduled Procedure Step End Date DA: '20150825' (0040, 0005) Scheduled Procedure Step End Time TM: '091000.000' (0040, 0244) Performed Procedure Step Start Date DA: '20150825' (0040, 0245) Performed Procedure Step Start Time TM: '095825.000' (0040, 0555) Acquisition Context Sequence 0 item(s) ---- (2050, 0020) Presentation LUT Shape CS: 'IDENTITY' (5200, 9229) Shared Functional Groups Sequence 1 item(s) ---- (0018, 9301) CT Acquisition Type Sequence 1 item(s) ---- (0018, 9302) Acquisition Type CS: 'SEQUENCED' (0018, 9333) Constant Volume Flag CS: 'NO' (0018, 9334) Fluoroscopy Flag CS: 'NO'

(0018, 9304) CT Acquisition Details Sequence 1 item(s) ---- (0018, 0090) Data Collection Diameter DS: '320.0' (0018, 1120) Gantry/Detector Tilt DS: '0.0' (0018, 1130) Table Height DS: '92.0' (0018, 1140) Rotation Direction CS: 'CW' (0018, 9305) Revolution Time FD: 0.35 (0018, 9306) Single Collimation Width FD: 0.5 (0018, 9307) Total Collimation Width FD: 128.0

(0018, 9312) CT Geometry Sequence 1 item(s) ---- (0018, 1110) Distance Source to Detector DS: None (0018, 9335) Distance Source to Data Collection FD: None

(0018, 9314) CT Reconstruction Sequence 1 item(s) ---- (0018, 1100) Reconstruction Diameter DS: '155.0' (0018, 1210) Convolution Kernel SH: 'FC42' (0018, 9315) Reconstruction Algorithm CS: 'VOLUMEXACT_' (0018, 9316) Convolution Kernel Group CS: 'CARDIAC' (0018, 9319) Reconstruction Angle FD: 360.0 (0018, 9320) Image Filter SH: 'AIDR 3D STD' (0018, 9322) Reconstruction Pixel Spacing FD: [0.302, 0.302]

(0018, 9325) CT X-Ray Details Sequence 1 item(s) ---- (0018, 0060) KVP DS: '120.0' (0018, 1160) Filter Type SH: 'MEDIUM' (0018, 1190) Focal Spot(s) DS: [1.6, 1.4] (0018, 7050) Filter Material CS: 'COPPER'

(0018, 9329) CT Image Frame Type Sequence 1 item(s) ---- (0008, 9007) Frame Type CS: ['ORIGINAL', 'PRIMARY', 'CARDIAC_CTA'] (0008, 9205) Pixel Presentation CS: 'MONOCHROME' (0008, 9206) Volumetric Properties CS: 'VOLUME' (0008, 9207) Volume Based Calculation Technique CS: 'NONE'

(0018, 9341) Contrast/Bolus Usage Sequence 1 item(s) ---- (0018, 9337) Contrast/Bolus Agent Number US: 1 (0018, 9342) Contrast/Bolus Agent Administered CS: 'YES' (0018, 9343) Contrast/Bolus Agent Detected CS: ''

(0020, 9071) Frame Anatomy Sequence 1 item(s) ---- (0008, 2218) Anatomic Region Sequence 0 item(s) ---- (0020, 9072) Frame Laterality CS: 'U'

(0028, 9110) Pixel Measures Sequence 1 item(s) ---- (0018, 0050) Slice Thickness DS: '0.5' (0028, 0030) Pixel Spacing DS: [0.302, 0.302]

(0028, 9132) Frame VOI LUT Sequence 1 item(s) ---- (0028, 1050) Window Center DS: [40, -500, 164] (0028, 1051) Window Width DS: [400, 1500, 654]

(0028, 9145) Pixel Value Transformation Sequence 1 item(s) ---- (0028, 1052) Rescale Intercept DS: '0.0' (0028, 1053) Rescale Slope DS: '1.0' (0028, 1054) Rescale Type LO: 'HU'

(5200, 9230) Per-frame Functional Groups Sequence 512 item(s) ---- (0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1667.75] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1667.75] (0018, 9327) Table Position FD: 0.125

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 1 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 1]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1667.750000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1667.5] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1667.5] (0018, 9327) Table Position FD: 0.375

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 2 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 2]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1667.500000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1667.25] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1667.25] (0018, 9327) Table Position FD: 0.625

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 3 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 3]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1667.250000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1667.0] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1667.0] (0018, 9327) Table Position FD: 0.875

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 4 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 4]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1667.000000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1666.75] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1666.75] (0018, 9327) Table Position FD: 1.125

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 5 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 5]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1666.750000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1666.5] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1666.5] (0018, 9327) Table Position FD: 1.375

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 6 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 6]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1666.500000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1666.25] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1666.25] (0018, 9327) Table Position FD: 1.625

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 7 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 7]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1666.250000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1666.0] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1666.0] (0018, 9327) Table Position FD: 1.875

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 8 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 8]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1666.000000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1665.75] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1665.75] (0018, 9327) Table Position FD: 2.125

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 9 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 9]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1665.750000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1665.5] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1665.5] (0018, 9327) Table Position FD: 2.375

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 10 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 10]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1665.500000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1665.25] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1665.25] (0018, 9327) Table Position FD: 2.625

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 11 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 11]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1665.250000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1665.0] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1665.0] (0018, 9327) Table Position FD: 2.875

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 12 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 12]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1665.000000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1664.75] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1664.75] (0018, 9327) Table Position FD: 3.125

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 13 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 13]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1664.750000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1664.5] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1664.5] (0018, 9327) Table Position FD: 3.375

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 14 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 14]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1664.500000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1664.25] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1664.25] (0018, 9327) Table Position FD: 3.625

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 15 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 15]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1664.250000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1664.0] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1664.0] (0018, 9327) Table Position FD: 3.875

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 16 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 16]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1664.000000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1663.75] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1663.75] (0018, 9327) Table Position FD: 4.125

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 17 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 17]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1663.750000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1663.5] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1663.5] (0018, 9327) Table Position FD: 4.375

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 18 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 18]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1663.500000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1663.25] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1663.25] (0018, 9327) Table Position FD: 4.625

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 19 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 19]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1663.250000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1663.0] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1663.0] (0018, 9327) Table Position FD: 4.875

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 20 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 20]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1663.000000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1662.75] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1662.75] (0018, 9327) Table Position FD: 5.125

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 21 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 21]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1662.750000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1662.5] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1662.5] (0018, 9327) Table Position FD: 5.375

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 22 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 22]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1662.500000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1662.25] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1662.25] (0018, 9327) Table Position FD: 5.625

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 23 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 23]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1662.250000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1662.0] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1662.0] (0018, 9327) Table Position FD: 5.875

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 24 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 24]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1662.000000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1661.75] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1661.75] (0018, 9327) Table Position FD: 6.125

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 25 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 25]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1661.750000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1661.5] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1661.5] (0018, 9327) Table Position FD: 6.375

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 26 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 26]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1661.500000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1661.25] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1661.25] (0018, 9327) Table Position FD: 6.625

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 27 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 27]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1661.250000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1661.0] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1661.0] (0018, 9327) Table Position FD: 6.875

(0020, 9111) Frame Content Sequence 1 item(s) ---- (0018, 9074) Frame Acquisition DateTime DT: '20150825100707.009' (0018, 9151) Frame Reference DateTime DT: '20150825100707.009' (0018, 9220) Frame Acquisition Duration FD: 350.0 (0020, 9056) Stack ID SH: '1_0724_00005' (0020, 9057) In-Stack Position Number UL: 28 (0020, 9128) Temporal Position Index UL: 1 (0020, 9157) Dimension Index Values UL: [1, 1, 28]

(0020, 9113) Plane Position Sequence 1 item(s) ---- (0020, 0032) Image Position (Patient) DS: [-45.473630, -85.473630, 1661.000000]

(0020, 9116) Plane Orientation Sequence 1 item(s) ---- (0020, 0037) Image Orientation (Patient) DS: [1.00000, 0.00000, 0.00000, 0.00000, 1.00000, 0.00000]

(0018, 9118) Cardiac Synchronization Sequence 1 item(s) ---- (0020, 9153) Nominal Cardiac Trigger Delay Time FD: 710.0

(0018, 9321) CT Exposure Sequence 1 item(s) ---- (0018, 9323) Exposure Modulation Type CS: 'ECG' (0018, 9324) Estimated Dose Saving FD: 92.08 (0018, 9328) Exposure Time in ms FD: 221.42857142857142 (0018, 9330) X-Ray Tube Current in mA FD: 420.0 (0018, 9332) Exposure in mAs FD: 93.0 (0018, 9345) CTDIvol FD: 13.7

(0018, 9326) CT Position Sequence 1 item(s) ---- (0018, 9313) Data Collection Center (Patient) FD: [0.0, 0.0, 1660.75] (0018, 9318) Reconstruction Target Center (Patie FD: [0.0, 0.0, 1660.75] (0018, 9327) Table Po

neurolabusc commented 2 years ago

Toshiba Medical has been acquired by Canon.

Did the scanner create enhanced DICOM, or was the source data classic DICOM that was converted to enhanced DICOM using the PixelMed tools or another tool? If the latter, can you replicate the issue by converting an open source classic DICOM CT dataset through your pipeline?

ZhongkangLu commented 2 years ago

You are correct. The DICOM image has been de-identified by a third-party software. Sorry that I don't have access to the software. The de-identified DICOM image can be correctly imported by all commercial software and some free software like itksnap, and 3D Slicer. On Wednesday, 3 November 2021, 02:56:45 am SGT, Chris Rorden @.***> wrote:

Toshiba has been acquired by Canon.

Did the scanner create enhanced DICOM, or was the source data classic DICOM that was converted to enhanced DICOM using the PixelMed tools or another tool? If the latter, can you replicate the issue by converting an open source classic DICOM CT dataset through your pipeline?

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neurolabusc commented 2 years ago
  1. Can you confirm you are using the latest stable release (v1.0.20211006).
  2. I understand that other tools may convert this file correctly. On the other hand, those tools will fail for images common in our community. The DICOM format is very complex, and has been interpreted differently by different manufacturers and obfuscated by many tools. For example, Philips can generate two different Specifically, every slice of your image includes two contradictory values for Patient Position 0020,0032 for a single slice of a DICOM, which can cause many tools to report the wrong value. My best guess is that the behavior you are experiencing is an unintended consequence of my kludge to handle Philips data.
  3. Without a concrete exemplar, I can not provide any more guidance. It is unclear if this reflects the data you acquired or subsequent tools that touched the image. Feel free to submit a pull request with a patch to handle your data.
ZhongkangLu commented 2 years ago

Yes, I am using the latest version, which is compiled from source code. So far I don't have any progress on the concrete exemplar. Hopefully I can go through the tedious administrative processes eventually. Thank you very much! On Wednesday, 3 November 2021, 07:17:31 pm SGT, Chris Rorden @.***> wrote:

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