I’m trying to read a dicom series with ITK and tools alike (Photoshop included), and the result looks like this:

slices stacked

a single slice

It seems all slices are displayed in an almost thresholded mode with half of these slices having value inversions. The values range from around -6000 to +6000. I first thought there could be some endianness or int/float type conversion errors, but that won’t explain why each slice behaves differently.

However it is able to open correctly on the manufacturer’s machine. Which means these files do contain correct image, and there could be some inter-slice information that ITK is unable to read?

Patient metadata:

    [0008,0005] SpecificCharacterSet    ISO_IR 192  CS  10
    [0008,0008] ImageType   [2] ORIGINAL, PRIMARY   CS  16
    [0008,0016] SOPClassUID 1.2.840.10008.5.1.4.1.1.2   UI  26
    [0008,0018] SOPInstanceUID  1.9.0.415.0.519.551.20240502100017.912523.909589.1.0    UI  52
    [0008,0020] StudyDate   20240502    DA  8
    [0008,0021] SeriesDate  20240502    DA  8
    [0008,0030] StudyTime   100340  TM  6
    [0008,0031] SeriesTime  100340  TM  6
    [0008,0050] AccessionNumber 17146152159323  SH  14
    [0008,0060] Modality    CT  CS  2
    [0008,0070] Manufacturer    MEYER   LO  6
    [0008,1030] StudyDescription        LO  0
    [0008,103e] SeriesDescription   _myct_type=CT_STITCH_   LO  22
    [0008,1090] ManufacturerModelName   mDX-13STTB1A    LO  12
    [0008,2111] DerivationDescription   Lossless JPEG compression, selection value 1, point transform 0, compression ratio 2.1179   ST  90
    [0008,9215] DerivationCodeSequence      SQ  70
        [fffe,e000] Item        na  54
            [0008,0100] CodeValue   121327  SH  6
            [0008,0102] CodingSchemeDesignator  DCM SH  4
            [0008,0104] CodeMeaning Full fidelity image LO  20
    [0018,0015] BodyPartExamined        CS  0
    [0018,0050] SliceThickness  0.250464    DS  8
    [0018,0060] KVP 90.000000   DS  10
    [0018,1020] SoftwareVersions    1.0.0.12480 LO  12
    [0018,1110] DistanceSourceToDetector    764.099976  DS  10
    [0018,1111] DistanceSourceToPatient 518.799988  DS  10
    [0018,1151] XRayTubeCurrent 4.000000    IS  8
    [0018,5100] PatientPosition HFS CS  4
    [0018,9473] AcquiredImageAreaDoseProduct    4614.3901   FL  4
    [0020,000d] StudyInstanceUID    1.9.0.415.0.519.551.20240502100017.912523   UI  42
    [0020,000e] SeriesInstanceUID   1.9.0.415.0.519.551.20240502100017.912523.909589.1  UI  50
    [0020,0010] StudyID 0   SH  2
    [0020,0011] SeriesNumber    0   IS  2
    [0020,0013] InstanceNumber  0   IS  2
    [0020,0020] PatientOrientation  [2] L, P    CS  4
    [0020,0032] ImagePositionPatient    [3] 0.0000, 0.0000, -0.250464   DS  24
    [0020,0037] ImageOrientationPatient [6] 1.0, 0.0, 0.0, 0.0, 1.0, 0.0    DS  24
    [0020,0052] FrameOfReferenceUID 1.9.0.415.0.519.551.002690  UI  26
    [0020,1040] PositionReferenceIndicator      LO  0
    [0020,1041] SliceLocation   -0.250464   DS  10
    [0028,0002] SamplesPerPixel 1   US  2
    [0028,0004] PhotometricInterpretation   MONOCHROME2 CS  12
    [0028,0010] Rows    668 US  2
    [0028,0011] Columns 668 US  2
    [0028,0030] PixelSpacing    [2] 0.250381, 0.250381  DS  18
    [0028,0034] PixelAspectRatio    1   IS  2
    [0028,0100] BitsAllocated   16  US  2
    [0028,0101] BitsStored  16  US  2
    [0028,0102] HighBit 15  US  2
    [0028,0103] PixelRepresentation 1   US  2
    [0028,0301] BurnedInAnnotation  YES CS  4
    [0028,1050] WindowCenter    1400.000000 DS  12
    [0028,1051] WindowWidth 5000.000000 DS  12
    [0028,1052] RescaleIntercept    0   DS  2
    [0028,1053] RescaleSlope    1   DS  2
    [0029,0010] PrivateCreator  MeYerMedical    LO  12
    [0029,1000] Unknown Tag & Data  _myct_type=CT_STITCH_   LO  22
    [0029,1004] Unknown Tag & Data  2   LO  2
    [7fe0,0010] PixelData       OB  0