Standalone S3 Viewer is only showing the first .dcm image with an S3 data source?

[evan-morgan]

Hi guys,

Firstly thanks so much for contributing and maintaining this project, it's a great piece of software and I really appreciate the work you do! Secondly, I'm stuck and would appreciate any help you can give me 👍

I'm hosting the viewer itself from an S3 bucket and a data source of dicom files with JSON maps from another S3 bucket which, for the purposes of this is completely public(just as a test case, I'm aware of the security implications). The issue is that when I enter the URL https://example-ohif-viewer-location.com/viewer?url=dicom-map.json it loads all of the data except for, as far as I can tell, anything past the first slice.

What I know:

• There's nothing in the network requests indicating any errors but also no GET requests for the other slices.
• It loads and displays correct information for every other aspect of the study and series, including the thumbnail of the first slice, the image of the first slice, the fact that it is 1 of 435 slices, see here
• Both S3 buckets are completely publicly accessible including appropriate CORS settings on the images/maps bucket
• The scrollbar displays but I can't move it with clicking and dragging or my scroll wheel or the up and down arrows hotkeys
• Testing with a smaller JSON map does not change or solve the problem
• No errors or warnings in the console
• The page loads but there is a single GET 404 at the very top of network requests for the viewer?url=map.json link but I assume this is erroneous as the map can be seen in the console

I suspect it might have something to do with my JSON maps so I'll provide a short snippet of one without any sensitive data, although I could be wrong:

{
   "studies":[
      {
         "StudyInstanceUID":"StudyID",
         "StudyDescription":"CT CHEST",
         "StudyDate":"10101010",
         "StudyTime":"100937.000",
         "PatientName":"NA",
         "PatientId":"NA",
         "series":[
            {
               "instances":[
                  {
                     "metadata":{
                        "Columns":512,
                        "Rows":512,
                        "InstanceNumber":8,
                        "AcquisitionNumber":3,
                        "PhotometricInterpretation":"MONOCHROME2",
                        "BitsAllocated":16,
                        "BitsStored":16,
                        "PixelRepresentation":1,
                        "SamplesPerPixel":1,
                        "PixelSpacing":[
                           0.708,
                           0.708
                        ],
                        "HighBit":15,
                        "ImageOrientationPatient":[
                           1,
                           0,
                           0,
                           0,
                           1,
                           0
                        ],
                        "ImagePositionPatient":[
                           -180.896,
                           -180.896,
                           1772.4
                        ],
                        "FrameOfReferenceUID":"FrameOfReferenceUID",
                        "ImageType":[
                           "ORIGINAL",
                           "PRIMARY",
                           "AXIAL"
                        ],
                        "Modality":"CT",
                        "SOPInstanceUID":"SOP",
                        "SeriesInstanceUID":"SeriesID",
                        "StudyInstanceUID":"StudyID"
                     },
                     "url":"dicomweb://aws-bucket.s3.amazonaws.com/folder/filename1.dcm"
                  },
                  {
                     "metadata":{
                        "Columns":512,
                        "Rows":512,
                        "InstanceNumber":301,
                        "AcquisitionNumber":3,
                        "PhotometricInterpretation":"MONOCHROME2",
                        "BitsAllocated":16,
                        "BitsStored":16,
                        "PixelRepresentation":1,
                        "SamplesPerPixel":1,
                        "PixelSpacing":[
                           0.708,
                           0.708
                        ],
                        "HighBit":15,
                        "ImageOrientationPatient":[
                           1,
                           0,
                           0,
                           0,
                           1,
                           0
                        ],
                        "ImagePositionPatient":[
                           -180.896,
                           -180.896,
                           1538
                        ],
                        "FrameOfReferenceUID":"FrameOfReferenceUID",
                        "ImageType":[
                           "ORIGINAL",
                           "PRIMARY",
                           "AXIAL"
                        ],
                        "Modality":"CT",
                        "SOPInstanceUID":"SOPInstanceUID",
                        "SeriesInstanceUID":"SeriesID",
                        "StudyInstanceUID":"StudyID"
                     },
                     "url":"dicomweb://aws-bucket.s3.amazonaws.com/folder/filename2.dcm"
                  },
                  {
                     "metadata":{
                        "Columns":512,
                        "Rows":512,
                        "InstanceNumber":275,
                        "AcquisitionNumber":3,
                        "PhotometricInterpretation":"MONOCHROME2",
                        "BitsAllocated":16,
                        "BitsStored":16,
                        "PixelRepresentation":1,
                        "SamplesPerPixel":1,
                        "PixelSpacing":[
                           0.708,
                           0.708
                        ],
                        "HighBit":15,
                        "ImageOrientationPatient":[
                           1,
                           0,
                           0,
                           0,
                           1,
                           0
                        ],
                        "ImagePositionPatient":[
                           -180.896,
                           -180.896,
                           1558.8
                        ],
                        "FrameOfReferenceUID":"1.2.392.200036.9116.2.6.1.3268.2060387192.1513905058.104502",
                        "ImageType":[
                           "ORIGINAL",
                           "PRIMARY",
                           "AXIAL"
                        ],
                        "Modality":"CT",
                        "SOPInstanceUID":"SOPID",
                        "SeriesInstanceUID":"SeriesID",
                        "StudyInstanceUID":"StudyID"
                     },
                     "url":"dicomweb://aws-bucket.s3.amazonaws.com/folder/filename3.dcm"
                  }
               ],
               "SeriesDate":"10101010",
               "SeriesDescription":"1.0 Lung Std. Volume   Vol.",
               "SeriesInstanceUID":"SeriesID",
               "SeriesNumber":"6",
               "SeriesTime":"101129.105",
               "Modality":"CT"
            }
         ]
      }
   ]
}

Any help is appreciated!

[olivert1969]

Hi @Signo-Alaris You may want to consider using an Orthanc Docker container with a plug-in to your choice of cloud provider - details on Orthanc cloud plug-ins here: https://book.orthanc-server.com/plugins/object-storage.html. Interacting with Orthanc via its RESTful API or through dicomWEB is straightforward.

[evan-morgan]

Issue was on my side! The URL I was generating was always pointing at the same dicom file

[raghav20]

@evan-morgan do you have a code for reference ?