Ignore files in the input folder that have no pixel data

[sophie22]

Added a new function to be part of the get_dicom_files function, which checks the folder items and only keeps the ones that have a parseable DICOM with a pixel_array. This is to avoid hazen breaking when subfolders or other files are present in the input folder.

These changes will pave the way for handling enhanced DICOM inputs in a future update.

[github-actions[bot]]

Coverage Report

File	Stmts	Miss	Cover	Missing
hazenlib
ACRObject.py	112	13	88%	48, 83–89, 126, 141–144, 172–173, 211–214
HazenTask.py	29	3	90%	67–71
__init__.py	64	17	73%	104, 142–151, 153–162, 164–166, 185–191, 195
exceptions.py	21	5	76%	19–23, 42
utils.py	240	62	74%	90, 94, 115, 128, 161, 176–189, 208, 215–222, 239, 246–248, 263–267, 283–287, 301, 326, 331, 342, 360, 422–423, 425–426, 431–456, 509, 512, 520–525, 528, 583, 592, 621
hazenlib/tasks
acr_geometric_accuracy.py	111	58	48%	53–100, 124–239
acr_ghosting.py	106	42	60%	42–58, 104–107, 154–157, 201–283
acr_slice_position.py	136	48	65%	56–80, 281–348
acr_slice_thickness.py	138	61	56%	45–64, 163, 241–325
acr_snr.py	132	57	57%	60–111, 131, 227–242, 287–305, 355–380
acr_spatial_resolution.py	206	68	67%	70–100, 187, 285, 302–313, 460–539
acr_uniformity.py	80	32	60%	43–60, 150–202
ghosting.py	148	52	65%	28–47, 67, 168–169, 176, 193–194, 249–253, 268–272, 343–385
relaxometry.py	291	89	69%	210–211, 213, 226–231, 238–246, 277–326, 375, 409–431, 609, 655–659, 726, 811–833, 851–866
slice_position.py	124	40	68%	30, 43–71, 129–130, 157, 273, 283–306
slice_width.py	352	52	85%	44–48, 52, 123, 188–213, 555, 560–561, 567, 572, 648–649, 1020–1084
snr.py	173	69	60%	45–48, 87, 103–113, 206–225, 237–247, 287–302, 328–338, 343–359, 397–413, 426–432, 475–493
snr_map.py	108	1	99%	159
spatial_resolution.py	246	44	82%	50–54, 58, 90, 213, 294, 460–501
uniformity.py	79	19	76%	59–63, 67, 118–119, 126, 174–204
TOTAL	2921	832	72%

Tests	Skipped	Failures	Errors	Time
205	0 :zzz:	0 :x:	0 :fire:	2m 14s :stopwatch: