Note
Go to the end to download the full example code.
Analyse differences between DICOM filesΒΆ
This examples illustrates how to find the differences between two DICOM files.
Dataset.file_meta -------------------------------
- (0002,0000) File Meta Information Group Length UL: 190
+ (0002,0000) File Meta Information Group Length UL: 192
(0002,0001) File Meta Information Version OB: b'\x00\x01'
- (0002,0002) Media Storage SOP Class UID UI: MR Image Storage
+ (0002,0002) Media Storage SOP Class UID UI: CT Image Storage
- (0002,0003) Media Storage SOP Instance UID UI: 1.3.6.1.4.1.5962.1.1.4.1.1.20040826185059.5457
+ (0002,0003) Media Storage SOP Instance UID UI: 1.3.6.1.4.1.5962.1.1.1.1.1.20040119072730.12322
(0002,0010) Transfer Syntax UID UI: Explicit VR Little Endian
(0002,0012) Implementation Class UID UI: 1.3.6.1.4.1.5962.2
(0002,0013) Implementation Version Name SH: 'DCTOOL100'
(0002,0016) Source Application Entity Title AE: 'CLUNIE1'
-------------------------------------------------
+ (0008,0005) Specific Character Set CS: 'ISO_IR 100'
- (0008,0008) Image Type CS: ['DERIVED', 'SECONDARY', 'OTHER']
+ (0008,0008) Image Type CS: ['ORIGINAL', 'PRIMARY', 'AXIAL']
- (0008,0012) Instance Creation Date DA: '20040826'
+ (0008,0012) Instance Creation Date DA: '20040119'
- (0008,0013) Instance Creation Time TM: '185434'
+ (0008,0013) Instance Creation Time TM: '072731'
(0008,0014) Instance Creator UID UI: 1.3.6.1.4.1.5962.3
- (0008,0016) SOP Class UID UI: MR Image Storage
+ (0008,0016) SOP Class UID UI: CT Image Storage
- (0008,0018) SOP Instance UID UI: 1.3.6.1.4.1.5962.1.1.4.1.1.20040826185059.5457
+ (0008,0018) SOP Instance UID UI: 1.3.6.1.4.1.5962.1.1.1.1.1.20040119072730.12322
- (0008,0020) Study Date DA: '20040826'
+ (0008,0020) Study Date DA: '20040119'
- (0008,0021) Series Date DA: ''
+ (0008,0021) Series Date DA: '19970430'
- (0008,0022) Acquisition Date DA: ''
+ (0008,0022) Acquisition Date DA: '19970430'
+ (0008,0023) Content Date DA: '19970430'
- (0008,0030) Study Time TM: '185059'
+ (0008,0030) Study Time TM: '072730'
- (0008,0031) Series Time TM: ''
+ (0008,0031) Series Time TM: '112749'
- (0008,0032) Acquisition Time TM: ''
+ (0008,0032) Acquisition Time TM: '112936'
+ (0008,0033) Content Time TM: '113008'
(0008,0050) Accession Number SH: ''
- (0008,0060) Modality CS: 'MR'
+ (0008,0060) Modality CS: 'CT'
- (0008,0070) Manufacturer LO: 'TOSHIBA_MEC'
+ (0008,0070) Manufacturer LO: 'GE MEDICAL SYSTEMS'
- (0008,0080) Institution Name LO: 'TOSHIBA'
+ (0008,0080) Institution Name LO: 'JFK IMAGING CENTER'
(0008,0090) Referring Physician's Name PN: ''
- (0008,0201) Timezone Offset From UTC SH: '-0400'
+ (0008,0201) Timezone Offset From UTC SH: '-0500'
- (0008,1010) Station Name SH: '000000000'
+ (0008,1010) Station Name SH: 'CT01_OC0'
+ (0008,1030) Study Description LO: 'e+1'
- (0008,1060) Name of Physician(s) Reading Study PN: '----'
- (0008,1070) Operators' Name PN: '----'
- (0008,1090) Manufacturer's Model Name LO: 'MRT50H1'
+ (0008,1090) Manufacturer's Model Name LO: 'RHAPSODE'
+ (0009,0010) Private Creator LO: 'GEMS_IDEN_01'
+ (0009,1001) [Full fidelity] LO: 'GE_GENESIS_FF'
+ (0009,1002) [Suite id] SH: 'CT01'
+ (0009,1004) [Product id] SH: 'HiSpeed CT/i'
+ (0009,1027) [Image actual date] SL: 862399669
+ (0009,1030) [Service id] SH: ''
+ (0009,1031) [Mobile location number] SH: ''
+ (0009,10E6) [Genesis Version - now] SH: '05'
+ (0009,10E7) [Exam Record checksum] UL: 973283917
+ (0009,10E9) [Actual series data time stamp] SL: 862399669
- (0010,0010) Patient's Name PN: 'CompressedSamples^MR1'
+ (0010,0010) Patient's Name PN: 'CompressedSamples^CT1'
- (0010,0020) Patient ID LO: '4MR1'
+ (0010,0020) Patient ID LO: '1CT1'
(0010,0030) Patient's Birth Date DA: ''
- (0010,0040) Patient's Sex CS: 'F'
+ (0010,0040) Patient's Sex CS: 'O'
+ (0010,1002) Other Patient IDs Sequence 2 item(s) ----
+ (0010,0020) Patient ID LO: 'ABCD1234'
+ (0010,0022) Type of Patient ID CS: 'TEXT'
+ ---------
+ (0010,0020) Patient ID LO: '1234ABCD'
+ (0010,0022) Type of Patient ID CS: 'TEXT'
+ ---------
- (0010,1020) Patient's Size DS: None
+ (0010,1010) Patient's Age AS: '000Y'
- (0010,1030) Patient's Weight DS: '80.0000'
+ (0010,1030) Patient's Weight DS: '0.000000'
+ (0010,21B0) Additional Patient History LT: ''
+ (0011,0010) Private Creator LO: 'GEMS_PATI_01'
+ (0011,1010) [Patient Status] SS: 0
- (0018,0010) Contrast/Bolus Agent LO: ''
+ (0018,0010) Contrast/Bolus Agent LO: 'ISOVUE300/100'
- (0018,0020) Scanning Sequence CS: 'SE'
- (0018,0021) Sequence Variant CS: 'NONE'
- (0018,0022) Scan Options CS: ''
+ (0018,0022) Scan Options CS: 'HELICAL MODE'
- (0018,0023) MR Acquisition Type CS: '3D'
- (0018,0050) Slice Thickness DS: '0.8000'
+ (0018,0050) Slice Thickness DS: '5.000000'
- (0018,0080) Repetition Time DS: '4000.0000'
- (0018,0081) Echo Time DS: '240.0000'
+ (0018,0060) KVP DS: '120'
+ (0018,0088) Spacing Between Slices DS: '5.000000'
+ (0018,0090) Data Collection Diameter DS: '480.000000'
- (0018,0083) Number of Averages DS: '1.0000'
- (0018,0084) Imaging Frequency DS: '63.92433900'
- (0018,0085) Imaged Nucleus SH: 'H'
- (0018,0086) Echo Number(s) IS: '1'
- (0018,0091) Echo Train Length IS: None
- (0018,1000) Device Serial Number LO: '-0000200'
- (0018,1020) Software Versions LO: 'V3.51*P25'
+ (0018,1020) Software Versions LO: '05'
+ (0018,1040) Contrast/Bolus Route LO: 'IV'
+ (0018,1100) Reconstruction Diameter DS: '338.671600'
+ (0018,1110) Distance Source to Detector DS: '1099.3100585938'
+ (0018,1111) Distance Source to Patient DS: '630.000000'
+ (0018,1120) Gantry/Detector Tilt DS: '0.000000'
+ (0018,1130) Table Height DS: '133.699997'
+ (0018,1150) Exposure Time IS: '1601'
+ (0018,1151) X-Ray Tube Current IS: '170'
- (0018,1314) Flip Angle DS: '90'
+ (0018,1152) Exposure IS: '170'
+ (0018,1160) Filter Type SH: 'LARGE BOWTIE FIL'
+ (0018,1190) Focal Spot(s) DS: '0.700000'
+ (0018,1210) Convolution Kernel SH: 'STANDARD'
- (0018,5100) Patient Position CS: 'HFS'
+ (0018,5100) Patient Position CS: 'FFS'
+ (0019,0010) Private Creator LO: 'GEMS_ACQU_01'
+ (0019,1002) [Detector Channel] SL: 912
+ (0019,1003) [Cell number at Theta] DS: '373.750000'
+ (0019,1004) [Cell spacing] DS: '1.016600'
+ (0019,100F) [Horiz. Frame of ref.] DS: '955.799988'
+ (0019,1011) [Series contrast] SS: 2
+ (0019,1013) [Start number for baseline] SS: 0
+ (0019,1014) [End number for baseline] SS: 0
+ (0019,1015) [Start number for enhanced scans] SS: 0
+ (0019,1016) [End number for enhanced scans] SS: 0
+ (0019,1017) [Series plane] SS: 2
+ (0019,1018) [First scan ras] LO: 'S'
+ (0019,1019) [First scan location] DS: '7.791870'
+ (0019,101A) [Last scan ras] LO: 'I'
+ (0019,101B) [Last scan loc] DS: '-320.197968'
+ (0019,101E) [Display field of view] DS: '0.000000'
+ (0019,1023) [Table Speed [mm/rotation]] DS: '5.000000'
+ (0019,1024) [Mid Scan Time [sec]] DS: '17.784578'
+ (0019,1025) [Mid scan flag] SS: 1
+ (0019,1026) [Tube Azimuth [degree]] SL: 0
+ (0019,1027) [Rotation Speed [msec]] DS: '1.000000'
+ (0019,102A) [x-ray On position] DS: '178.079926'
+ (0019,102B) [x-ray Off position] DS: '3994.299316'
+ (0019,102C) [Number of triggers] SL: 10431
+ (0019,102E) [Angle of first view] DS: '-718.079956'
+ (0019,102F) [Trigger frequency] DS: '984.000000'
+ (0019,1039) [SFOV Type] SS: 16
+ (0019,1040) [Stat recon flag] SS: 0
+ (0019,1041) [Compute type] SS: 1
+ (0019,1042) [Segment Number] SS: 0
+ (0019,1043) [Total Segments Required] SS: 0
+ (0019,1044) [Interscan delay] DS: '1.000000'
+ (0019,1047) [View compression factor] SS: 1
+ (0019,104A) [Total no. of ref channels] SS: 6
+ (0019,104B) [Data size for scan data] SL: 10431
+ (0019,1052) [Recon post proc. Flag] SS: 1
+ (0019,1057) [CT water number] SS: -95
+ (0019,1058) [CT bone number] SS: 0
+ (0019,105E) [Number of channels (1...512)] SL: 763
+ (0019,105F) [Increment between channels] SL: 1
+ (0019,1060) [Starting view] SL: 1969
+ (0019,1061) [Number of views] SL: 1576
+ (0019,1062) [Increment between views] SL: 1
+ (0019,106A) [Dependent on #views processed] SS: 4
+ (0019,106B) [Field of view in detector cells] SS: 852
+ (0019,1070) [Value of back projection button] SS: 1
+ (0019,1071) [Set if fatq estimates were used] SS: 0
+ (0019,1072) [Z chan avg over views] DS: '0.000000'
+ (0019,1073) [Avg of left ref chans over views] DS: '0.000000'
+ (0019,1074) [Max left chan over views] DS: '0.000000'
+ (0019,1075) [Avg of right ref chans over views] DS: '0.000000'
+ (0019,1076) [Max right chan over views] DS: '0.000000'
+ (0019,10DA) [Reference channel used] SS: 0
+ (0019,10DB) [Back projector coefficient] DS: '0.000000'
+ (0019,10DC) [Primary speed correction used] SS: 1
+ (0019,10DD) [Overrange correction used] SS: 1
+ (0019,10DE) [Dynamic Z alpha value] DS: '0.000000'
- (0020,000D) Study Instance UID UI: 1.3.6.1.4.1.5962.1.2.4.20040826185059.5457
+ (0020,000D) Study Instance UID UI: 1.3.6.1.4.1.5962.1.2.1.20040119072730.12322
- (0020,000E) Series Instance UID UI: 1.3.6.1.4.1.5962.1.3.4.1.20040826185059.5457
+ (0020,000E) Series Instance UID UI: 1.3.6.1.4.1.5962.1.3.1.1.20040119072730.12322
- (0020,0010) Study ID SH: '4MR1'
+ (0020,0010) Study ID SH: '1CT1'
(0020,0011) Series Number IS: '1'
- (0020,0012) Acquisition Number IS: '0'
+ (0020,0012) Acquisition Number IS: '2'
(0020,0013) Instance Number IS: '1'
- (0020,0032) Image Position (Patient) DS: [-83.9063, -91.2000, 6.6406]
+ (0020,0032) Image Position (Patient) DS: [-158.135803, -179.035797, -75.699997]
- (0020,0037) Image Orientation (Patient) DS: [1.0000, 0.0000, 0.0000, 0.0000, 1.0000, 0.0000]
+ (0020,0037) Image Orientation (Patient) DS: [1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000]
- (0020,0052) Frame of Reference UID UI: 1.3.6.1.4.1.5962.1.4.4.1.20040826185059.5457
+ (0020,0052) Frame of Reference UID UI: 1.3.6.1.4.1.5962.1.4.1.1.20040119072730.12322
(0020,0060) Laterality CS: ''
- (0020,1040) Position Reference Indicator LO: ''
+ (0020,1040) Position Reference Indicator LO: 'SN'
- (0020,1041) Slice Location DS: '0.0000'
+ (0020,1041) Slice Location DS: '-77.2040634155'
(0020,4000) Image Comments LT: 'Uncompressed'
+ (0021,0010) Private Creator LO: 'GEMS_RELA_01'
+ (0021,1003) [Series from which Prescribed] SS: 2
+ (0021,1005) [Genesis Version - now] SH: '05'
+ (0021,1007) [Series Record checksum] UL: 1605775145
+ (0021,1015) [Unknown] US: 24078
+ (0021,1016) [Unknown] SS: 2
+ (0021,1018) [Genesis version - Now] SH: '05'
+ (0021,1019) [Acq recon record checksum] UL: 750675506
+ (0021,1037) [Screen Format] SS: 16
+ (0021,104A) [Anatomical reference for scout] LO: ''
+ (0021,1090) [Tube focal spot position] SS: 7400
+ (0021,1091) [Biopsy position] SS: 0
+ (0021,1092) [Biopsy T location] FL: 0.0
+ (0021,1093) [Biopsy ref location] FL: 0.0
+ (0023,0010) Private Creator LO: 'GEMS_STDY_01'
+ (0023,1070) [Start time(secs) in first axial] FD: 862399761.111079
+ (0023,1074) [No. of updates to header] SL: 1
+ (0023,107D) [Indicates study has complete info SS: 0
+ (0025,0010) Private Creator LO: 'GEMS_SERS_01'
+ (0025,1006) [Last pulse sequence used] SS: 0
+ (0025,1007) [Images in Series] SL: 44
+ (0025,1010) [Landmark Counter] SL: 0
+ (0025,1011) [Number of Acquisitions] SS: 0
+ (0025,1017) [Series Complete Flag] SL: 0
+ (0025,1018) [Number of images archived] SL: 0
+ (0025,1019) [Last image number used] SL: 4
+ (0025,101A) [Primary Receiver Suite and Host] SH: ''
+ (0027,0010) Private Creator LO: 'GEMS_IMAG_01'
+ (0027,1006) [Image archive flag] SL: 1
+ (0027,1010) [Scout Type] SS: 0
+ (0027,101C) [Vma mamp] SL: 150
+ (0027,101D) [Vma phase] SS: 1
+ (0027,101E) [Vma mod] SL: 24
+ (0027,101F) [Vma clip] SL: 129
+ (0027,1020) [Smart scan ON/OFF flag] SS: 1
+ (0027,1030) [Foreign Image Revision] SH: ''
+ (0027,1035) [Plane Type] SS: 2
+ (0027,1040) [RAS letter of image location] SH: 'I'
+ (0027,1041) [Image location] FL: -77.20406341552734
+ (0027,1042) [Center R coord of plane image] FL: -11.199999809265137
+ (0027,1043) [Center A coord of plane image] FL: 9.699999809265137
+ (0027,1044) [Center S coord of plane image] FL: -75.69999694824219
+ (0027,1045) [Normal R coord] FL: 0.0
+ (0027,1046) [Normal A coord] FL: 0.0
+ (0027,1047) [Normal S coord] FL: -1.0
+ (0027,1048) [R Coord of Top Right Corner] FL: -180.53579711914062
+ (0027,1049) [A Coord of Top Right Corner] FL: 179.03579711914062
+ (0027,104A) [S Coord of Top Right Corner] FL: -75.69999694824219
+ (0027,104B) [R Coord of Bottom Right Corner] FL: -180.53579711914062
+ (0027,104C) [A Coord of Bottom Right Corner] FL: -159.63580322265625
+ (0027,104D) [S Coord of Bottom Right Corner] FL: -75.69999694824219
+ (0027,1050) [Scan Start Location] FL: -63.19999694824219
+ (0027,1051) [Scan End Location] FL: -116.20304870605469
+ (0027,1052) [RAS letter for side of image] SH: 'L'
+ (0027,1053) [RAS letter for anterior/posterior] SH: 'A'
+ (0027,1054) [RAS letter for scout start loc] SH: 'I'
+ (0027,1055) [RAS letter for scout end loc] SH: 'I'
(0028,0002) Samples per Pixel US: 1
(0028,0004) Photometric Interpretation CS: 'MONOCHROME2'
- (0028,0010) Rows US: 64
+ (0028,0010) Rows US: 128
- (0028,0011) Columns US: 64
+ (0028,0011) Columns US: 128
- (0028,0030) Pixel Spacing DS: [0.3125, 0.3125]
+ (0028,0030) Pixel Spacing DS: [0.661468, 0.661468]
(0028,0100) Bits Allocated US: 16
(0028,0101) Bits Stored US: 16
(0028,0102) High Bit US: 15
(0028,0103) Pixel Representation US: 1
- (0028,0106) Smallest Image Pixel Value SS: 0
- (0028,0107) Largest Image Pixel Value SS: 4000
+ (0028,0120) Pixel Padding Value SS: -2000
+ (0028,1052) Rescale Intercept DS: '-1024'
+ (0028,1053) Rescale Slope DS: '1'
+ (0029,0010) Private Creator LO: 'GEMS_IMPS_01'
+ (0029,1004) [Lower range of Pixels1] SL: 0
+ (0029,1005) [Lower range of Pixels1] DS: '0.000000'
+ (0029,1006) [Lower range of Pixels1] DS: '0.000000'
+ (0029,1007) [Lower range of Pixels1] SL: 87
+ (0029,1008) [Lower range of Pixels1] SH: ''
+ (0029,1009) [Lower range of Pixels1] SH: ''
+ (0029,100A) [Lower range of Pixels1] SS: 764
+ (0029,1026) [Version of the hdr struct] SS: 2
+ (0029,1034) [Advantage comp. Overflow] SL: 0
+ (0029,1035) [Advantage comp. Underflow] SL: 0
+ (0043,0010) Private Creator LO: 'GEMS_PARM_01'
- (0028,1050) Window Center DS: '600'
+ (0043,1010) [Window value] US: 400
- (0028,1051) Window Width DS: '1600'
+ (0043,1011) [Total input views] US: 10431
+ (0043,1012) [X-ray chain] SS: [14, 2, 3]
+ (0043,1013) [Decon kernel parameters] SS: [107, 21, 4, 2, 20]
+ (0043,1014) [Calibration parameters] SS: [4, 4, 5]
+ (0043,1015) [Total output views] SS: 10431
+ (0043,1016) [Number of overranges] SS: 0
+ (0043,1017) [IBH image scale factors] DS: '0.095000'
+ (0043,1018) [BBH coefficients] DS: [0.085000, 1.102000, 0.095000]
+ (0043,1019) [Number of BBH chains to blend] SS: 350
+ (0043,101A) [Starting channel number] SL: 7
+ (0043,101B) [Ppscan parameters] SS: [0, 0, 0, 0, 0]
+ (0043,101C) [GE image integrity] SS: 0
+ (0043,101D) [Level value] SS: 40
+ (0043,101E) [Delta Start Time [msec]] DS: '2.000000'
+ (0043,101F) [Max overranges in a view] SL: 0
+ (0043,1020) [Avg overranges all views] DS: '0.000000'
+ (0043,1021) [Corrected after glow terms] SS: 0
+ (0043,1025) [Reference channels] SS: [1, 2, 3, 748, 749, 750]
+ (0043,1026) [No views ref chans blocked] US: [0, 1, 1, 0, 0, 0]
+ (0043,1027) [Scan Pitch Ratio] SH: '/1.0:1'
+ (0043,1028) [Unique image iden] OB: Array of 80 elements
+ (0043,1029) [Histogram tables] OB: Array of 2068 elements
+ (0043,102A) [User defined data] OB: Array of 40 elements
+ (0043,102B) [Private Scan Options] SS: [4, 4, 0, 0]
+ (0043,1031) [Recon Center Coordinates] DS: [-11.200000, 9.700000]
+ (0043,1040) [Trigger on position] FL: 178.07992553710938
+ (0043,1041) [Degree of rotation] FL: 3816.219482421875
+ (0043,1042) [DAS trigger source] SL: 0
+ (0043,1043) [DAS fpa gain] SL: 0
+ (0043,1044) [DAS output source] SL: 1
+ (0043,1045) [DAS ad input] SL: 1
+ (0043,1046) [DAS cal mode] SL: 3
+ (0043,1047) [DAS cal frequency] SL: -1
+ (0043,1048) [DAS reg xm] SL: 1
+ (0043,1049) [DAS auto zero] SL: 0
+ (0043,104A) [Starting channel of view] SS: 1
+ (0043,104B) [DAS xm pattern] SL: 0
+ (0043,104C) [TGGC trigger mode] SS: 0
+ (0043,104D) [Start scan to X-ray on delay] FL: 0.0
+ (0043,104E) [Duration of X-ray on] FL: 10.60060977935791
- (7FE0,0010) Pixel Data OW: Array of 8192 elements
+ (7FE0,0010) Pixel Data OW: Array of 32768 elements
(FFFC,FFFC) Data Set Trailing Padding OB: Array of 126 elements
# authors : Guillaume Lemaitre <g.lemaitre58@gmail.com>
# license : MIT
import difflib
from pydicom import examples
print(__doc__)
# difflib compare functions require a list of lines, each terminated with
# newline character massage the string representation of each dicom dataset
# into this form:
rep = []
for ds in [examples.mr, examples.ct]:
lines = str(ds).split("\n")
lines = [line + "\n" for line in lines] # add the newline to end
rep.append(lines)
diff = difflib.Differ()
for line in diff.compare(rep[0], rep[1]):
if line[0] != "?":
print(line)
Total running time of the script: (0 minutes 0.103 seconds)