GDCMDUMP(1)
okay bestie, welcome to gdcmdump(1) from the DICOM Manipulation corner of the manual — this is the tool that spills a DICOM file’s whole structure and values onto your console like it’s reading tea leaves 🔮💖.
✨ NAME ✨
gdcmdump — dumps a DICOM file, and it will display the structure and values contained in the specified DICOM file. literally the “show me what’s inside” bestie we all need 💅.
🦋 SYNOPSIS 🦋
gdcmdump [options] dcm_file
gdcmdump [options] dcm_directory💖 DESCRIPTION 💖
okay so the gdcmdump command line program dumps a DICOM file to the console. For those familiar with dcmdump (DCMTK) output, gdcmdump has some minor differences. Namely:
- For Implicit Transfer Syntax
gdcmdumpwill print??instead of the dictionary VR
also, gdcmdump has a limited private dictionary that is used to lookup private element whenever possible. it’s giving “I know some of the private names, not all of them” 🕵️♀️.
🎀 PARAMETERS 🎀
dcm_file— DICOM input filenamedcm_directory— DICOM input directory
💅 OPTIONS 💅
🔥 specific options 🔥
-x,--xml-dict— generate the XML dict (only private elements for now).-r,--recursive— recursive (input is a directory)-d,--dump— dump value (limited use).-p,--print— print value instead of simply dumping (default).-c,--color— print in color.-C,--csa— print SIEMENS CSA Header(0029,[12]0,SIEMENS CSA HEADER).--csa-asl— print decoded SIEMENS CSA MR_ASL (base64).--csa-diffusion— print decoded SIEMENS CSA MRDiffusion (base64).--mrprotocol— print SIEMENS MrProtocol only (withinASCCONV BEGIN/END). or Phoenix Meta Protocol(0021,19,SIEMENS MR SDS 01).-P,--pdb— print GEMS Protocol Data Block(0025,1b,GEMS_SERS_01).--elscint— print ELSCINT Protocol Information(01f7,26,ELSCINT1).--vepro— print VEPRO Protocol Information(0055,20,VEPRO VIF 3.0 DATA). or VEPRO Protocol Information(0055,20,VEPRO VIM 5.0 DATA).--sds— print Philips MR Series Data Storage(1.3.46.670589.11.0.0.12.2)Information(2005,32,Philips MR Imaging DD 002).--ct3— print CT Private Data 2(7005,10,TOSHIBA_MEC_CT3).--pmtf— print PMTF INFORMATION DATA sub-sequences(0029,01,PMTF INFORMATION DATA). or TOSHIBA_MEC_MR3 sub-sequences(0029,01,TOSHIBA_MEC_MR3). or CANON_MEC_MR3 sub-sequences(0029,01,CANON_MEC_MR3)--medcom— print MedCom History Information as UTF-8(0029,20,SIEMENS MEDCOM HEADER).--mr3— print Original Data as UTF-8(700d,08,TOSHIBA_MEC_MR3).-A,--asn1— print encapsulated ASN1 structure>(0400,0520).--map-uid-names— map UID to names.
🌈 general options 🌈
-h,--help— print this help text and exit-v,--version— print version information and exit-V,--verbose— verbose mode (warning+error).-W,--warning— warning mode, print warning information-E,--error— error mode, print error information-D,--debug— debug mode, print debug information
⭐ special options ⭐
-I,--ignore-errors— dumps even if file is corrupted (advanced users only, see disclaimers).
🌸 TYPICAL USAGE 🌸
💜 Printing Implicit Transfer Syntax 💜
The VR are not found in the file, thus are presented with a “(??)”, and right next to it (if found) the correct VR.
Eg.:
$ gdcmdump GE_DLX-8-MONO2-PrivateSyntax.dcm
# Dicom-File-Format
...
(0008,0000) ?? (UL) 434 # 4,1 Generic Group Length
(0008,0005) ?? (CS) [ISO_IR 100] # 10,1-n Specific Character Set
(0008,0008) ?? (CS) [ORIGINAL\\PRIMARY\\SINGLE PLANE ] # 30,2-n Image Type
(0008,0016) ?? (UI) [1.2.840.10008.5.1.4.1.1.12.1] # 28,1 SOP Class UID
(0008,0018) ?? (UI) [1.2.840.113619.2.16.1.0.906539207.1.24207] # 42,1 SOP Instance UID
(0008,0020) ?? (DA) [19980923] # 8,1 Study Date
(0008,0021) ?? (DA) [19980923] # 8,1 Series Date
(0008,0022) ?? (DA) [19980923] # 8,1 Acquisition Date
(0008,0023) ?? (DA) [19980923] # 8,1 Content Date
(0008,0030) ?? (TM) [101229.000] # 10,1 Study Time
(0008,0031) ?? (TM) [101229.000] # 10,1 Series Time
(0008,0032) ?? (TM) [102653.000] # 10,1 Acquisition Time
(0008,0033) ?? (TM) [102653.000] # 10,1 Content Time
...🍓 Print Private Attributes 🍓
GDCM has a limited private dictionary. Whenever possible, it will try to lookup the private data element. it’s lowkey a private-element detective and I respect it 🫶.
$ gdcmdump 012345.002.050.dcm
...
(0009,0010) LO [GEMS_IDEN_01] # 12,1 Private Creator
(0009,1001) LO [GE_GENESIS_FF ] # 14,1 Full fidelity
(0009,1002) SH [MRCV] # 4,1 Suite id
(0009,1004) SH [SIGNA ] # 6,1 Product id
(0009,1027) SL 985968524 # 4,1 Image actual date
(0009,1030) SH [19356UMR2 ] # 10,1 Service id
(0009,1031) SH [999 ] # 4,1 Mobile location number
(0009,10e3) UI [1.2.840.113619.1.1.4.1762386977] # 32,1 Equipment UID
(0009,10e6) SH [08] # 2,1 Genesis Version - now
(0009,10e7) UL 2757786872 # 4,1 Exam Record checksum
(0009,10e9) SL 985968523 # 4,1 Actual series data time stamp
...
(0019,0000) UL 1208 # 4,1 Generic Group Length
(0019,0010) LO [GEMS_ACQU_01] # 12,1 Private Creator
(0019,100f) DS [424.399994] # 10,1 Horiz. Frame of ref.
(0019,1011) SS 0 # 2,1 Series contrast
...
(0019,10e0) DS [0.000000] # 8,1 User data 24 {# DTI Diffusion Dir., release 10.0 & above}
(0019,10e2) DS [0.000000] # 8,1 Velocity Encode Scale
(0019,10f2) SS 0 # 2,1 Fast phases
(0019,10f9) DS [98] # 2,1 Transmit gain
...
(0021,0000) UL 372 # 4,1 Generic Group Length
(0021,0010) LO [GEMS_RELA_01] # 12,1 Private Creator
(0021,1003) SS 0 # 2,1 Series from which Prescribed
...🧚 SIEMENS CSA Header 🧚
Using this option it is possible to dump as a readable text what is contained in the private attribute as found in typical SIEMENS MR DICOM file.
Eg.:
$ gdcmdump --csa MR_SIEMENS_forceLoad29-1010_29-1020.dcm
(0029,0010)siemens csa header
Image shadow data (0029,xx10)
0 - 'EchoLinePosition' VM 1, VR IS, SyngoDT 6, NoOfItems 6, Data '64 '
1 - 'EchoColumnPosition' VM 1, VR IS, SyngoDT 6, NoOfItems 6, Data '64 '
2 - 'EchoPartitionPosition' VM 1, VR IS, SyngoDT 6, NoOfItems 6, Data '32 '
3 - 'UsedChannelMask' VM 1, VR UL, SyngoDT 9, NoOfItems 6, Data '255 '
4 - 'Actual3DImaPartNumber' VM 1, VR IS, SyngoDT 6, NoOfItems 0, Data
5 - 'ICE_Dims' VM 1, VR LO, SyngoDT 19, NoOfItems 6, Data 'X_1_1_1_1_1_1_31_1_1_1_1_19'
6 - 'B_value' VM 1, VR IS, SyngoDT 6, NoOfItems 6, Data '0 '
7 - 'Filter1' VM 1, VR IS, SyngoDT 6, NoOfItems 0, Data
8 - 'Filter2' VM 1, VR IS, SyngoDT 6, NoOfItems 0, Data
...🫶 SIEMENS CSA Header: MR_ASL 🫶
Using this option it is possible to dump a decoded (base64) version of MR_ASL contained in the CSA header.
Eg.:
$ gdcmdump --csa-asl ASL.dcm
(0018,9251) SQ (Sequence with undefined length) # u/l,1 MR Arterial Spin Labeling Sequence
(fffe,e000) na (Item with undefined length)
(0018,9252) LO [2D pulsed ASL (EP2D)] # 20,1 ASL Technique Description
(0018,9257) CS [LABEL ] # 6,1 ASL Context
(0018,9259) CS [NO] # 2,1 ASL Crusher Flag
(0018,925c) CS [YES ] # 4,1 ASL Bolus Cut-off Flag
(0018,925d) SQ (Sequence with undefined length) # u/l,1 ASL Bolus Cut-off Timing Sequence
(fffe,e000) na (Item with undefined length)
(0018,925e) LO [Q2TIPS] # 6,1 ASL Bolus Cut-off Technique
(0018,925f) IS (UL) [1990] # 4,1 ASL Bolus Cut-off Delay Time
(fffe,e00d)
(fffe,e0dd)
(0018,9260) SQ (Sequence with undefined length) # u/l,1 ASL Slab Sequence
(fffe,e000) na (Item with undefined length)
(0018,9253) US 1 # 2,1 ASL Slab Number
(0018,9254) FD 109.5 # 8,1 ASL Slab Thickness
(0018,9255) FD 0\0\1 # 24,3 ASL Slab Orientation
(0018,9256) FD 0\-23.9333\-70.9189 # 24,3 ASL Mid Slab Position
(0018,9258) IS (UL) [10] # 2,1 ASL Pulse Train Duration
(fffe,e00d)
(fffe,e0dd)
(fffe,e00d)
(fffe,e0dd)This is completely equivalent to doing (by hand):
$ gdcmdump --csa asl.dcm | grep -A 6 MR_ASL
98 - 'MR_ASL' VM 1, VR UT, SyngoDT 27, NoOfItems 6, Data 'GABRklNRAAD//////v8A4P////8YAFKSTE8UADJEIHB1bHNlZCBBU0wgKEVQMkQpGABXkkNT
BgBMQUJFTCAYAGCSU1EAAP/////+/wDg/////xgAU5JVUwIAAQAYAFSSRkQIAAAAAAAAYFtA
GABVkkZEGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA8D8YAFaSRkQYAAAAAAAAAAAAAAAAYOvu
N8AAAACAzrpRwBgAWJJJUwIAMTD+/w3gAAAAAP7/3eAAAAAAGABZkkNTAgBOTxgAXJJDUwQA
WUVTIBgAXZJTUQAA//////7/AOD/////GABekkxPBgBRMlRJUFMYAF+SSVMEADE5OTD+/w3g
AAAAAP7/3eAAAAAA/v8N4AAAAAD+/93gAAAAAA==
'
$ echo 'GABRklNRAAD//////v8A4P////8YAFKSTE8UADJEIHB1bHNlZCBBU0wgKEVQMkQpGABXkkNT
BgBMQUJFTCAYAGCSU1EAAP/////+/wDg/////xgAU5JVUwIAAQAYAFSSRkQIAAAAAAAAYFtA
GABVkkZEGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA8D8YAFaSRkQYAAAAAAAAAAAAAAAAYOvu
N8AAAACAzrpRwBgAWJJJUwIAMTD+/w3gAAAAAP7/3eAAAAAAGABZkkNTAgBOTxgAXJJDUwQA
WUVTIBgAXZJTUQAA//////7/AOD/////GABekkxPBgBRMlRJUFMYAF+SSVMEADE5OTD+/w3g
AAAAAP7/3eAAAAAA/v8N4AAAAAD+/93gAAAAAA==
' | base64 -d > asl.dcm
$ dcmdump -f asl.dcm...and just so we're clear on that VR thing — bestie, pay attention, because this is a real gotcha: currently two attributes, (0018,925f) and (0018,9258), are using a VR that is different from what the DICOM standard specifies. Not a vibe, just a fact. Note it and move on. 💅
🌸 SIEMENS CSA Header: MRDiffusion
Using this option it is possible to dump a decoded (base64) version of MRDiffusion contained in the CSA header. Yes, decoded — we're un-base64-ing it for you so your eyeballs can actually enjoy the tea. ✨
Eg.:
$ gdcmdump --csa-diffusion DIFFUSION.dcm
# Dicom-File-Format
# Dicom-Meta-Information-Header
# Used TransferSyntax:
# Dicom-Data-Set
# Used TransferSyntax: Unknown Transfer Syntax
(0018,9117) SQ (Sequence with undefined length) # u/l,1 MR Diffusion Sequence
(fffe,e000) na (Item with undefined length)
(0018,9075) CS [ISOTROPIC ] # 10,1 Diffusion Directionality
(0018,9087) FD 0 # 8,1 Diffusion b-value
(fffe,e00d)
(fffe,e0dd)Like, look at that sequence go — ISOTROPIC directionality and a b-value of 0, all laid out and adorable. 🌈
🦋 SIEMENS CSA Header: MrProtocol
Using this option it is possible to dump a sorted version of MrProtocol (extra '"' are trimmed). Sorted and de-quoted?? The glow-up is real — it's giving "I organized my entire life and also removed the clutter." 🎀
Eg.:
$ gdcmdump --mrprotocol input.dcmShort and sweet, no notes. 🫶
okay so this next bit of the dump is the MR side of things, and bestie… it's a lot 💀 we're talking about the private MrProtocol / CSA-style block, and gdcmdump just airs out every single parameter without shame. Grab a snack 🍓, stretch your thumbs, and let it scroll:
MrProtocolVersion: 12510002
acFlowComp[0] : 1
adFlipAngleDegree[0] : 90
alTE[0] : 60000
alTR[0] : 3000000
dRefSNR : 181090.7706
dRefSNR_VOI : 181090.7706
lAverages : 1
lCombinedEchoes : 1
lContrasts : 1
lParadigmPeriodicity : 1
lRepetitions : 79
lScanTimeSec : 3
lTotalScanTimeSec : 246
sAdjFreSpec.ulMode : 0x1
sAdjShimSpec.ulMode : 0x2
sAdjWatSupSpec.ulMode : 0x1
sAngio.ucPCFlowMode : 0x2
sAngio.ucTOFInflow : 0x4
sAutoAlign.dAAMatrix[0] : 1
sAutoAlign.dAAMatrix[10] : 1
sAutoAlign.dAAMatrix[15] : 1
sAutoAlign.dAAMatrix[5] : 1
sCOIL_SELECT_MEAS.asList[0].lElementSelected : 1
sCOIL_SELECT_MEAS.asList[0].lRxChannelConnected : 1
sCOIL_SELECT_MEAS.asList[0].sCoilElementID.lCoilCopy : 1
sCOIL_SELECT_MEAS.asList[0].sCoilElementID.tCoilID : 8_Channel_Head
sCOIL_SELECT_MEAS.asList[0].sCoilElementID.tElement : PH7
sCOIL_SELECT_MEAS.asList[1].lElementSelected : 1
sCOIL_SELECT_MEAS.asList[1].lRxChannelConnected : 2
sCOIL_SELECT_MEAS.asList[1].sCoilElementID.lCoilCopy : 1
sCOIL_SELECT_MEAS.asList[1].sCoilElementID.tCoilID : 8_Channel_Head
sCOIL_SELECT_MEAS.asList[1].sCoilElementID.tElement : PH5
sCOIL_SELECT_MEAS.asList[2].lElementSelected : 1
sCOIL_SELECT_MEAS.asList[2].lRxChannelConnected : 3
sCOIL_SELECT_MEAS.asList[2].sCoilElementID.lCoilCopy : 1
sCOIL_SELECT_MEAS.asList[2].sCoilElementID.tCoilID : 8_Channel_Head
sCOIL_SELECT_MEAS.asList[2].sCoilElementID.tElement : PH3
sCOIL_SELECT_MEAS.asList[3].lElementSelected : 1
sCOIL_SELECT_MEAS.asList[3].lRxChannelConnected : 4
sCOIL_SELECT_MEAS.asList[3].sCoilElementID.lCoilCopy : 1
sCOIL_SELECT_MEAS.asList[3].sCoilElementID.tCoilID : 8_Channel_Head
sCOIL_SELECT_MEAS.asList[3].sCoilElementID.tElement : PH1
sCOIL_SELECT_MEAS.asList[4].lElementSelected : 1
sCOIL_SELECT_MEAS.asList[4].lRxChannelConnected : 5
sCOIL_SELECT_MEAS.asList[4].sCoilElementID.lCoilCopy : 1
sCOIL_SELECT_MEAS.asList[4].sCoilElementID.tCoilID : 8_Channel_Head
sCOIL_SELECT_MEAS.asList[4].sCoilElementID.tElement : PH8
sCOIL_SELECT_MEAS.asList[5].lElementSelected : 1
sCOIL_SELECT_MEAS.asList[5].lRxChannelConnected : 6
sCOIL_SELECT_MEAS.asList[5].sCoilElementID.lCoilCopy : 1
sCOIL_SELECT_MEAS.asList[5].sCoilElementID.tCoilID : 8_Channel_Head
sCOIL_SELECT_MEAS.asList[5].sCoilElementID.tElement : PH6
sCOIL_SELECT_MEAS.asList[6].lElementSelected : 1
sCOIL_SELECT_MEAS.asList[6].lRxChannelConnected : 7
sCOIL_SELECT_MEAS.asList[6].sCoilElementID.lCoilCopy : 1
sCOIL_SELECT_MEAS.asList[6].sCoilElementID.tCoilID : 8_Channel_Head
sCOIL_SELECT_MEAS.asList[6].sCoilElementID.tElement : PH4
sCOIL_SELECT_MEAS.asList[7].lElementSelected : 1
sCOIL_SELECT_MEAS.asList[7].lRxChannelConnected : 8
sCOIL_SELECT_MEAS.asList[7].sCoilElementID.lCoilCopy : 1
sCOIL_SELECT_MEAS.asList[7].sCoilElementID.tCoilID : 8_Channel_Head
sCOIL_SELECT_MEAS.asList[7].sCoilElementID.tElement : PH2
sCOIL_SELECT_MEAS.sCOILPLUGS.auiNmbrOfNibbles[0] : 0x2
sCOIL_SELECT_MEAS.sCOILPLUGS.auiNmbrOfNibbles[1] : 0x2
sCOIL_SELECT_MEAS.sCOILPLUGS.auiNmbrOfNibbles[2] : 0x2
sCOIL_SELECT_MEAS.sCOILPLUGS.auiNmbrOfNibbles[3] : 0x2
sCOIL_SELECT_MEAS.sCOILPLUGS.auiNmbrOfNibbles[4] : 0x2
sCOIL_SELECT_MEAS.sCOILPLUGS.aulPlugId[0] : 0xff
sCOIL_SELECT_MEAS.sCOILPLUGS.aulPlugId[1] : 0xaa
sCOIL_SELECT_MEAS.sCOILPLUGS.aulPlugId[2] : 0xee
sCOIL_SELECT_MEAS.sCOILPLUGS.aulPlugId[3] : 0xee
sCOIL_SELECT_MEAS.sCOILPLUGS.aulPlugId[4] : 0xa4
sDiffusion.ulMode : 0x1
sEFISPEC.bEFIDataValid : 1
sEllipticalFilter.ucMode : 0x1
sFastImaging.lEPIFactor : 128
sFastImaging.lSegments : 1
sFastImaging.lTurboFactor : 1
sGRADSPEC.alShimCurrent[0] : -166
sGRADSPEC.alShimCurrent[1] : 596
sGRADSPEC.alShimCurrent[2] : -516
sGRADSPEC.alShimCurrent[3] : 84
sGRADSPEC.alShimCurrent[4] : -295
sGRADSPEC.bB0CompensationValid : 1
sGRADSPEC.bCrossTermCompensationValid : 1
sGRADSPEC.bDelayValid : 1
sGRADSPEC.bEddyCompensationValid : 1
sGRADSPEC.bOffsetValid : 1
sGRADSPEC.bSensitivityValid : 1
sGRADSPEC.bShimCurrentValid : 1
sGRADSPEC.flGSWDMinRiseTime : 5
sGRADSPEC.flSensitivityX : 0.000353238
sGRADSPEC.flSensitivityY : 0.000364826
sGRADSPEC.flSensitivityZ : 0.000356804
sGRADSPEC.lDelayX : 14
sGRADSPEC.lDelayY : 15
sGRADSPEC.lDelayZ : 13
sGRADSPEC.lOffsetX : -10
sGRADSPEC.lOffsetY : 22
sGRADSPEC.lOffsetZ : 34
sGRADSPEC.sB0CompensationX.aflAmplitude[0] : -0.0110937
sGRADSPEC.sB0CompensationX.aflAmplitude[1] : -0.0276212
sGRADSPEC.sB0CompensationX.aflAmplitude[2] : 0.00261628
sGRADSPEC.sB0CompensationX.aflTimeConstant[0] : 1.86006
sGRADSPEC.sB0CompensationX.aflTimeConstant[1] : 0.0451358
sGRADSPEC.sB0CompensationX.aflTimeConstant[2] : 0.00199924
sGRADSPEC.sB0CompensationY.aflAmplitude[0] : 0.0647921
sGRADSPEC.sB0CompensationY.aflAmplitude[1] : 0.0207167
sGRADSPEC.sB0CompensationY.aflAmplitude[2] : -0.0131878
sGRADSPEC.sB0CompensationY.aflTimeConstant[0] : 0.852499
sGRADSPEC.sB0CompensationY.aflTimeConstant[1] : 0.0633158
sGRADSPEC.sB0CompensationY.aflTimeConstant[2] : 0.00199999
sGRADSPEC.sB0CompensationZ.aflAmplitude[0] : 0.119857
sGRADSPEC.sB0CompensationZ.aflAmplitude[1] : 0.0106907
sGRADSPEC.sB0CompensationZ.aflAmplitude[2] : -0.0159243
sGRADSPEC.sB0CompensationZ.aflTimeConstant[0] : 1.03958
sGRADSPEC.sB0CompensationZ.aflTimeConstant[1] : 0.019543
sGRADSPEC.sB0CompensationZ.aflTimeConstant[2] : 0.00141055
sGRADSPEC.sCrossTermCompensationXY.aflAmplitude[0] : 0.000779649
sGRADSPEC.sCrossTermCompensationXY.aflTimeConstant[0] : 0.609972
sGRADSPEC.sCrossTermCompensationXZ.aflAmplitude[0] : -0.000357764
sGRADSPEC.sCrossTermCompensationXZ.aflTimeConstant[0] : 0.757463
sGRADSPEC.sCrossTermCompensationYX.aflAmplitude[0] : 0.00028701
sGRADSPEC.sCrossTermCompensationYX.aflTimeConstant[0] : 0.692162
sGRADSPEC.sCrossTermCompensationYZ.aflAmplitude[0] : 0.000341002
sGRADSPEC.sCrossTermCompensationYZ.aflTimeConstant[0] : 0.643997
sGRADSPEC.sEddyCompensationX.aflAmplitude[0] : 0.00321033
sGRADSPEC.sEddyCompensationX.aflAmplitude[1] : 0.0764387
sGRADSPEC.sEddyCompensationX.aflAmplitude[2] : -0.0119296
sGRADSPEC.sEddyCompensationX.aflAmplitude[3] : 0.002806
sGRADSPEC.sEddyCompensationX.aflAmplitude[4] : 0.00131044
sGRADSPEC.sEddyCompensationX.aflTimeConstant[0] : 1.92825
sGRADSPEC.sEddyCompensationX.aflTimeConstant[1] : 0.530542
sGRADSPEC.sEddyCompensationX.aflTimeConstant[2] : 0.348189
sGRADSPEC.sEddyCompensationX.aflTimeConstant[3] : 0.0172583
sGRADSPEC.sEddyCompensationX.aflTimeConstant[4] : 0.00199055
sGRADSPEC.sEddyCompensationY.aflAmplitude[0] : 0.00129643
sGRADSPEC.sEddyCompensationY.aflAmplitude[1] : 0.0657945
sGRADSPEC.sEddyCompensationY.aflAmplitude[2] : -0.00875319
sGRADSPEC.sEddyCompensationY.aflAmplitude[3] : 0.00247817
sGRADSPEC.sEddyCompensationY.aflAmplitude[4] : 0.00136282
sGRADSPEC.sEddyCompensationY.aflTimeConstant[0] : 2.18733
sGRADSPEC.sEddyCompensationY.aflTimeConstant[1] : 0.554603
sGRADSPEC.sEddyCompensationY.aflTimeConstant[2] : 0.363992
sGRADSPEC.sEddyCompensationY.aflTimeConstant[3] : 0.0174167
sGRADSPEC.sEddyCompensationY.aflTimeConstant[4] : 0.0019934
sGRADSPEC.sEddyCompensationZ.aflAmplitude[0] : 0.0106364
sGRADSPEC.sEddyCompensationZ.aflAmplitude[1] : 0.0644895
sGRADSPEC.sEddyCompensationZ.aflAmplitude[2] : -0.0116849
sGRADSPEC.sEddyCompensationZ.aflAmplitude[3] : 0.00245425
sGRADSPEC.sEddyCompensationZ.aflAmplitude[4] : -0.000382604
sGRADSPEC.sEddyCompensationZ.aflTimeConstant[0] : 2.45763
sGRADSPEC.sEddyCompensationZ.aflTimeConstant[1] : 0.728919
sGRADSPEC.sEddyCompensationZ.aflTimeConstant[2] : 0.490303
sGRADSPEC.sEddyCompensationZ.aflTimeConstant[3] : 0.0146871
sGRADSPEC.sEddyCompensationZ.aflTimeConstant[4] : 0.00198729
sGRADSPEC.ucMode : 0x11
sGroupArray.anMember[10] : 10
sGroupArray.anMember[11] : 11
sGroupArray.anMember[12] : 12
sGroupArray.anMember[13] : 13
sGroupArray.anMember[14] : 14
sGroupArray.anMember[15] : 15
sGroupArray.anMember[16] : 16
sGroupArray.anMember[17] : 17
sGroupArray.anMember[18] : 18
sGroupArray.anMember[19] : 19
sGroupArray.anMember[1] : 1
sGroupArray.anMember[20] : 20
sGroupArray.anMember[21] : 21
sGroupArray.anMember[22] : 22
sGroupArray.anMember[23] : 23
sGroupArray.anMember[24] : 24
sGroupArray.anMember[25] : 25
sGroupArray.anMember[26] : 26
sGroupArray.anMember[27] : 27
sGroupArray.anMember[28] : 28
sGroupArray.anMember[29] : 29
sGroupArray.anMember[2] : 2
sGroupArray.anMember[30] : 30
sGroupArray.anMember[31] : -1
sGroupArray.anMember[3] : 3
sGroupArray.anMember[4] : 4
sGroupArray.anMember[5] : 5
sGroupArray.anMember[6] : 6
sGroupArray.anMember[7] : 7
sGroupArray.anMember[8] : 8
sGroupArray.anMember[9] : 9
sGroupArray.asGroup[0].dDistFact : 0.1
sGroupArray.asGroup[0].nSize : 31
sGroupArray.lSize : 1
sGroupArray.sPSat.dGap : 10
sGroupArray.sPSat.dThickness : 50
sKSpace.dPhaseResolution : 1
sKSpace.dSliceResolution : 1
sKSpace.lBaseResolution : 64
sKSpace.lImagesPerSlab : 64
sKSpace.lPartitions : 64
sKSpace.lPhaseEncodingLines : 64
sKSpace.ucAveragingMode : 0x2
sKSpace.ucDimension : 0x2
sKSpace.ucMultiSliceMode : 0x2
sKSpace.ucPhasePartialFourier : 0x10
sKSpace.ucSlicePartialFourier : 0x10
sKSpace.unReordering : 0x1
sNavigatorPara.ucRespComp : 0x4
sPat.lAccelFact3D : 1
sPat.lAccelFactPE : 1
sPat.ucPATMode : 0x1
sPat.ucRefScanMode : 0x1
sPhysioImaging.lMethod1 : 1
sPhysioImaging.lMethod2 : 1
sPhysioImaging.lPhases : 1
sPhysioImaging.lRetroGatedImages : 16
sPhysioImaging.lSignal1 : 1
sPhysioImaging.lSignal2 : 1
sPhysioImaging.sPhysioECG.lArrhythmiaDetection : 1
sPhysioImaging.sPhysioECG.lCardiacGateOffThreshold : 700000
sPhysioImaging.sPhysioECG.lCardiacGateOnThreshold : 100000
sPhysioImaging.sPhysioECG.lTriggerPulses : 1
sPhysioImaging.sPhysioECG.lTriggerWindow : 5okay, a few things I'm obsessed with here, because this dump is a whole aesthetic 🌸
- The very first line is a little rebel:
MrProtocolVersion: 12510002— colon glued right to the value, no space around it, unlike literally every other line which gets the:treatment. Not me noticing the formatting inconsistency 😭 - The coil section is doing the most: eight entries,
sCOIL_SELECT_MEAS.asList[0]throughsCOIL_SELECT_MEAS.asList[7], each withlRxChannelConnectedcounting up1…8💅, each sayingtCoilID : 8_Channel_Head, and each one holding a differenttElement—PH7,PH5,PH3,PH1,PH8,PH6,PH4,PH2. Note the coil ID and element are not in quotes and use underscores where you'd expect spaces, so8_Channel_Headis exactly how it prints, bestie — don't "fix" it. - Then
sCOIL_SELECT_MEAS.sCOILPLUGSgives us fiveauiNmbrOfNibbles[k], all0x2, and fiveaulPlugId[k]in hex:0xff,0xaa,0xee,0xee,0xa4. Cute hex, no notes. 🎀 sGRADSPECis the main character of this dump — shim currents (-166,596,-516,84,-295), a bunch ofb...Validflags all set to1, tiny sensitivity floats likesGRADSPEC.flSensitivityX : 0.000353238, plus delays/offsets per axis and stacks ofaflAmplitude/aflTimeConstantarrays for B0, cross-term and eddy compensation. It's giving "someone actually measured things" energy 🔥- The
sGroupArray.anMemberlist is not numerically sorted — you get[10],[11],[12], …[19], then[1], then[20]…[31], then[2],[3]…[9]. Pure lexicographic sorting vibes. AndsGroupArray.anMember[31] : -1is out there living its truth 🙈 whilesGroupArray.asGroup[0].nSize : 31andsGroupArray.lSize : 1sit below. sKSpaceis like the most symmetrical thing ever:dPhaseResolution : 1,dSliceResolution : 1,lBaseResolution : 64,lImagesPerSlab : 64,lPartitions : 64,lPhaseEncodingLines : 64, thenucAveragingMode : 0x2,ucDimension : 0x2,ucMultiSliceMode : 0x2,ucPhasePartialFourier : 0x10,ucSlicePartialFourier : 0x10,unReordering : 0x1. So satisfying, no cap ✨- And the ECG/physio bits at the end:
sPhysioImaging.sPhysioECG.lCardiacGateOnThreshold : 100000vssPhysioImaging.sPhysioECG.lCardiacGateOffThreshold : 700000— two very different numbers, both just sitting there, and that's literally all we're gonna say about them because the dump doesn't editorialize and neither should we 🫶
fr fr: every value in that block is printed exactly as it appears — hex stays hex, floats keep all their digits, indices keep their weird order. If you're diffing two dumps, this ordering is the ordering. Don't let anyone tell you otherwise 💀
and bestie, that's genuinely not even the end of the output — there's more header coming, so keep those scrolling thumbs warm 🦋
…and it just keeps going, bestie 😭 the CSA header really said "no thoughts, head empty, here's every single field I know." This is the part of the dump where gdcmdump shows you the protocol's whole inner monologue — physiology gating, prep pulses, receiver scaling, and then the slice array just absolutely refusing to be brief. Slay, I guess. 💅
sPhysioImaging.sPhysioExt.lCardiacGateOffThreshold : 700000
sPhysioImaging.sPhysioExt.lCardiacGateOnThreshold : 100000
sPhysioImaging.sPhysioExt.lTriggerPulses : 1
sPhysioImaging.sPhysioExt.lTriggerWindow : 5
sPhysioImaging.sPhysioPulse.lCardiacGateOffThreshold : 700000
sPhysioImaging.sPhysioPulse.lCardiacGateOnThreshold : 100000
sPhysioImaging.sPhysioPulse.lTriggerPulses : 1
sPhysioImaging.sPhysioPulse.lTriggerWindow : 5
sPhysioImaging.sPhysioResp.dGatingRatio : 0.3
sPhysioImaging.sPhysioResp.lRespGatePhase : 2
sPhysioImaging.sPhysioResp.lRespGateThreshold : 20
sPrepPulses.ucFatSat : 0x1
sPrepPulses.ucFatSatMode : 0x2
sPrepPulses.ucInversion : 0x4
sPrepPulses.ucSatRecovery : 0x1
sPrepPulses.ucWaterSat : 0x4
sProtConsistencyInfo.flGMax : 26
sProtConsistencyInfo.flNominalB0 : 1.494
sProtConsistencyInfo.flRiseTime : 5
sRXSPEC.aFFT_SCALE[0].bValid : 1
sRXSPEC.aFFT_SCALE[0].flFactor : 0.720612
sRXSPEC.aFFT_SCALE[0].lRxChannel : 1
sRXSPEC.aFFT_SCALE[1].bValid : 1
sRXSPEC.aFFT_SCALE[1].flFactor : 0.719059
sRXSPEC.aFFT_SCALE[1].lRxChannel : 2
sRXSPEC.aFFT_SCALE[2].bValid : 1
sRXSPEC.aFFT_SCALE[2].flFactor : 0.705708
sRXSPEC.aFFT_SCALE[2].lRxChannel : 3
sRXSPEC.aFFT_SCALE[3].bValid : 1
sRXSPEC.aFFT_SCALE[3].flFactor : 0.731533
sRXSPEC.aFFT_SCALE[3].lRxChannel : 4
sRXSPEC.aFFT_SCALE[4].bValid : 1
sRXSPEC.aFFT_SCALE[4].flFactor : 0.722418
sRXSPEC.aFFT_SCALE[4].lRxChannel : 5
sRXSPEC.aFFT_SCALE[5].bValid : 1
sRXSPEC.aFFT_SCALE[5].flFactor : 0.738751
sRXSPEC.aFFT_SCALE[5].lRxChannel : 6
sRXSPEC.aFFT_SCALE[6].bValid : 1
sRXSPEC.aFFT_SCALE[6].flFactor : 0.719098
sRXSPEC.aFFT_SCALE[6].lRxChannel : 7
sRXSPEC.aFFT_SCALE[7].bValid : 1
sRXSPEC.aFFT_SCALE[7].flFactor : 0.733029
sRXSPEC.aFFT_SCALE[7].lRxChannel : 8
sRXSPEC.alDwellTime[0] : 3000
sRXSPEC.bGainValid : 1
sRXSPEC.bVariCapVoltagesValid : 1
sRXSPEC.lGain : 1Okay so that's the physics-y half, and honestly? It ate. 🔥 Cardiac gate thresholds, respiratory gating ratio, fat sat, water sat, inversion — all just laid out in plain text like a little recipe. And those eight sRXSPEC.aFFT_SCALE[...] entries are one per receive channel, each with its own flFactor, bestie, each one slightly different, and I need you to know that is completely normal and not a bug, don't come for me.
Then the slice array shows up and it's giving main character energy with like thirty entries. Behold, in all its alphabetical-lexicographic-string-sorted glory:
sSliceArray.anAsc[10] : 10
sSliceArray.anAsc[11] : 11
sSliceArray.anAsc[12] : 12
sSliceArray.anAsc[13] : 13
sSliceArray.anAsc[14] : 14
sSliceArray.anAsc[15] : 15
sSliceArray.anAsc[16] : 16
sSliceArray.anAsc[17] : 17
sSliceArray.anAsc[18] : 18
sSliceArray.anAsc[19] : 19
sSliceArray.anAsc[1] : 1
sSliceArray.anAsc[20] : 20
sSliceArray.anAsc[21] : 21
sSliceArray.anAsc[22] : 22
sSliceArray.anAsc[23] : 23
sSliceArray.anAsc[24] : 24
sSliceArray.anAsc[25] : 25
sSliceArray.anAsc[26] : 26
sSliceArray.anAsc[27] : 27
sSliceArray.anAsc[28] : 28
sSliceArray.anAsc[29] : 29
sSliceArray.anAsc[2] : 2
sSliceArray.anAsc[30] : 30
sSliceArray.anAsc[3] : 3
sSliceArray.anAsc[4] : 4
sSliceArray.anAsc[5] : 5
sSliceArray.anAsc[6] : 6
sSliceArray.anAsc[7] : 7
sSliceArray.anAsc[8] : 8
sSliceArray.anAsc[9] : 9
sSliceArray.anPos[10] : 10
sSliceArray.anPos[11] : 11
sSliceArray.anPos[12] : 12
sSliceArray.anPos[13] : 13
sSliceArray.anPos[14] : 14
sSliceArray.anPos[15] : 15
sSliceArray.anPos[16] : 16
sSliceArray.anPos[17] : 17
sSliceArray.anPos[18] : 18
sSliceArray.anPos[19] : 19
sSliceArray.anPos[1] : 1
sSliceArray.anPos[20] : 20
sSliceArray.anPos[21] : 21
sSliceArray.anPos[22] : 22
sSliceArray.anPos[23] : 23
sSliceArray.anPos[24] : 24
sSliceArray.anPos[25] : 25
sSliceArray.anPos[26] : 26
sSliceArray.anPos[27] : 27
sSliceArray.anPos[28] : 28
sSliceArray.anPos[29] : 29
sSliceArray.anPos[2] : 2
sSliceArray.anPos[30] : 30
sSliceArray.anPos[3] : 3
sSliceArray.anPos[4] : 4
sSliceArray.anPos[5] : 5
sSliceArray.anPos[6] : 6
sSliceArray.anPos[7] : 7
sSliceArray.anPos[8] : 8
sSliceArray.anPos[9] : 9Not me pointing out that [10] comes before [1] 💀 — it's a string sort, babe, not a numeric one, and that is not a bug either, it's just how it vibes. iykyk.
And then the individual slices, each one with FOV, thickness, normal vector and position. Every. Single. One. 🫶
sSliceArray.asSlice[0].dPhaseFOV : 230
sSliceArray.asSlice[0].dReadoutFOV : 230
sSliceArray.asSlice[0].dThickness : 4
sSliceArray.asSlice[0].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[0].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[0].sNormal.dTra : 0.992737636
sSliceArray.asSlice[0].sPosition.dCor : -52.65585315
sSliceArray.asSlice[0].sPosition.dSag : 2.24891108
sSliceArray.asSlice[0].sPosition.dTra : -26.94105767
sSliceArray.asSlice[10].dPhaseFOV : 230
sSliceArray.asSlice[10].dReadoutFOV : 230
sSliceArray.asSlice[10].dThickness : 4
sSliceArray.asSlice[10].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[10].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[10].sNormal.dTra : 0.992737636
sSliceArray.asSlice[10].sPosition.dCor : -48.78027355
sSliceArray.asSlice[10].sPosition.dSag : -1.356313999
sSliceArray.asSlice[10].sPosition.dTra : 16.73939831
sSliceArray.asSlice[11].dPhaseFOV : 230
sSliceArray.asSlice[11].dReadoutFOV : 230
sSliceArray.asSlice[11].dThickness : 4
sSliceArray.asSlice[11].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[11].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[11].sNormal.dTra : 0.992737636
sSliceArray.asSlice[11].sPosition.dCor : -48.39271559
sSliceArray.asSlice[11].sPosition.dSag : -1.716836507
sSliceArray.asSlice[11].sPosition.dTra : 21.10744391
sSliceArray.asSlice[12].dPhaseFOV : 230
sSliceArray.asSlice[12].dReadoutFOV : 230
sSliceArray.asSlice[12].dThickness : 4
sSliceArray.asSlice[12].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[12].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[12].sNormal.dTra : 0.992737636
sSliceArray.asSlice[12].sPosition.dCor : -48.00515763
sSliceArray.asSlice[12].sPosition.dSag : -2.077359015
sSliceArray.asSlice[12].sPosition.dTra : 25.47548951
sSliceArray.asSlice[13].dPhaseFOV : 230
sSliceArray.asSlice[13].dReadoutFOV : 230
sSliceArray.asSlice[13].dThickness : 4
sSliceArray.asSlice[13].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[13].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[13].sNormal.dTra : 0.992737636
sSliceArray.asSlice[13].sPosition.dCor : -47.61759967
sSliceArray.asSlice[13].sPosition.dSag : -2.437881523
sSliceArray.asSlice[13].sPosition.dTra : 29.84353511
sSliceArray.asSlice[14].dPhaseFOV : 230
sSliceArray.asSlice[14].dReadoutFOV : 230
sSliceArray.asSlice[14].dThickness : 4
sSliceArray.asSlice[14].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[14].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[14].sNormal.dTra : 0.992737636
sSliceArray.asSlice[14].sPosition.dCor : -47.23004171
sSliceArray.asSlice[14].sPosition.dSag : -2.798404031
sSliceArray.asSlice[14].sPosition.dTra : 34.21158071
sSliceArray.asSlice[15].dPhaseFOV : 230
sSliceArray.asSlice[15].dReadoutFOV : 230
sSliceArray.asSlice[15].dThickness : 4
sSliceArray.asSlice[15].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[15].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[15].sNormal.dTra : 0.992737636
sSliceArray.asSlice[15].sPosition.dCor : -46.84248375
sSliceArray.asSlice[15].sPosition.dSag : -3.158926539
sSliceArray.asSlice[15].sPosition.dTra : 38.57962631
sSliceArray.asSlice[16].dPhaseFOV : 230
sSliceArray.asSlice[16].dReadoutFOV : 230
sSliceArray.asSlice[16].dThickness : 4
sSliceArray.asSlice[16].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[16].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[16].sNormal.dTra : 0.992737636
sSliceArray.asSlice[16].sPosition.dCor : -46.45492579
sSliceArray.asSlice[16].sPosition.dSag : -3.519449047
sSliceArray.asSlice[16].sPosition.dTra : 42.9476719
sSliceArray.asSlice[17].dPhaseFOV : 230
sSliceArray.asSlice[17].dReadoutFOV : 230
sSliceArray.asSlice[17].dThickness : 4
sSliceArray.asSlice[17].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[17].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[17].sNormal.dTra : 0.992737636
sSliceArray.asSlice[17].sPosition.dCor : -46.06736783
sSliceArray.asSlice[17].sPosition.dSag : -3.879971555
sSliceArray.asSlice[17].sPosition.dTra : 47.3157175
sSliceArray.asSlice[18].dPhaseFOV : 230
sSliceArray.asSlice[18].dReadoutFOV : 230
sSliceArray.asSlice[18].dThickness : 4
sSliceArray.asSlice[18].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[18].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[18].sNormal.dTra : 0.992737636
sSliceArray.asSlice[18].sPosition.dCor : -45.67980987
sSliceArray.asSlice[18].sPosition.dSag : -4.240494063
sSliceArray.asSlice[18].sPosition.dTra : 51.6837631
sSliceArray.asSlice[19].dPhaseFOV : 230
sSliceArray.asSlice[19].dReadoutFOV : 230
sSliceArray.asSlice[19].dThickness : 4
sSliceArray.asSlice[19].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[19].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[19].sNormal.dTra : 0.992737636
sSliceArray.asSlice[19].sPosition.dCor : -45.29225191
sSliceArray.asSlice[19].sPosition.dSag : -4.601016571
sSliceArray.asSlice[19].sPosition.dTra : 56.0518087
sSliceArray.asSlice[1].dPhaseFOV : 230
sSliceArray.asSlice[1].dReadoutFOV : 230
sSliceArray.asSlice[1].dThickness : 4
sSliceArray.asSlice[1].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[1].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[1].sNormal.dTra : 0.992737636
sSliceArray.asSlice[1].sPosition.dCor : -52.26829519
sSliceArray.asSlice[1].sPosition.dSag : 1.888388572
sSliceArray.asSlice[1].sPosition.dTra : -22.57301207
sSliceArray.asSlice[20].dPhaseFOV : 230
sSliceArray.asSlice[20].dReadoutFOV : 230
sSliceArray.asSlice[20].dThickness : 4
sSliceArray.asSlice[20].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[20].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[20].sNormal.dTra : 0.992737636
sSliceArray.asSlice[20].sPosition.dCor : -44.90469395
sSliceArray.asSlice[20].sPosition.dSag : -4.961539079
sSliceArray.asSlice[20].sPosition.dTra : 60.4198543
sSliceArray.asSlice[21].dPhaseFOV : 230
sSliceArray.asSlice[21].dReadoutFOV : 230
sSliceArray.asSlice[21].dThickness : 4
sSliceArray.asSlice[21].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[21].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[21].sNormal.dTra : 0.992737636
sSliceArray.asSlice[21].sPosition.dCor : -44.51713599Notice the tea ☕ — every single slice shares the exact same sNormal values (0.08808135446, -0.08193693363, 0.992737636), because they're all parallel slices from one stack, and only the sPosition crawls along dTra. That's the whole point of a stack, and seeing it spelled out like this is lowkey kind of iconic. 🦋
And bestie… we're not even done. The array just keeps going. Hold on, the next chunk is coming—
ok so we're still deep in the dump 💅 and this is the part where the attribute list just keeps going, alphabetically, like it's personally committed to your carpal tunnel. Grab a snack bestie, we're scrolling 🍓
sSliceArray.asSlice[21].sPosition.dSag : -5.322061587
sSliceArray.asSlice[21].sPosition.dTra : 64.7878999
sSliceArray.asSlice[22].dPhaseFOV : 230
sSliceArray.asSlice[22].dReadoutFOV : 230
sSliceArray.asSlice[22].dThickness : 4
sSliceArray.asSlice[22].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[22].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[22].sNormal.dTra : 0.992737636
sSliceArray.asSlice[22].sPosition.dCor : -44.12957804
sSliceArray.asSlice[22].sPosition.dSag : -5.682584095
sSliceArray.asSlice[22].sPosition.dTra : 69.15594549
sSliceArray.asSlice[23].dPhaseFOV : 230
sSliceArray.asSlice[23].dReadoutFOV : 230
sSliceArray.asSlice[23].dThickness : 4
sSliceArray.asSlice[23].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[23].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[23].sNormal.dTra : 0.992737636
sSliceArray.asSlice[23].sPosition.dCor : -43.74202008
sSliceArray.asSlice[23].sPosition.dSag : -6.043106603
sSliceArray.asSlice[23].sPosition.dTra : 73.52399109
sSliceArray.asSlice[24].dPhaseFOV : 230
sSliceArray.asSlice[24].dReadoutFOV : 230
sSliceArray.asSlice[24].dThickness : 4
sSliceArray.asSlice[24].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[24].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[24].sNormal.dTra : 0.992737636
sSliceArray.asSlice[24].sPosition.dCor : -43.35446212
sSliceArray.asSlice[24].sPosition.dSag : -6.403629111
sSliceArray.asSlice[24].sPosition.dTra : 77.89203669
sSliceArray.asSlice[25].dPhaseFOV : 230
sSliceArray.asSlice[25].dReadoutFOV : 230
sSliceArray.asSlice[25].dThickness : 4
sSliceArray.asSlice[25].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[25].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[25].sNormal.dTra : 0.992737636
sSliceArray.asSlice[25].sPosition.dCor : -42.96690416
sSliceArray.asSlice[25].sPosition.dSag : -6.764151619
sSliceArray.asSlice[25].sPosition.dTra : 82.26008229
sSliceArray.asSlice[26].dPhaseFOV : 230
sSliceArray.asSlice[26].dReadoutFOV : 230
sSliceArray.asSlice[26].dThickness : 4
sSliceArray.asSlice[26].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[26].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[26].sNormal.dTra : 0.992737636
sSliceArray.asSlice[26].sPosition.dCor : -42.5793462
sSliceArray.asSlice[26].sPosition.dSag : -7.124674127
sSliceArray.asSlice[26].sPosition.dTra : 86.62812789
sSliceArray.asSlice[27].dPhaseFOV : 230
sSliceArray.asSlice[27].dReadoutFOV : 230
sSliceArray.asSlice[27].dThickness : 4
sSliceArray.asSlice[27].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[27].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[27].sNormal.dTra : 0.992737636
sSliceArray.asSlice[27].sPosition.dCor : -42.19178824
sSliceArray.asSlice[27].sPosition.dSag : -7.485196635
sSliceArray.asSlice[27].sPosition.dTra : 90.99617349
sSliceArray.asSlice[28].dPhaseFOV : 230
sSliceArray.asSlice[28].dReadoutFOV : 230
sSliceArray.asSlice[28].dThickness : 4
sSliceArray.asSlice[28].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[28].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[28].sNormal.dTra : 0.992737636
sSliceArray.asSlice[28].sPosition.dCor : -41.80423028
sSliceArray.asSlice[28].sPosition.dSag : -7.845719143
sSliceArray.asSlice[28].sPosition.dTra : 95.36421908
sSliceArray.asSlice[29].dPhaseFOV : 230
sSliceArray.asSlice[29].dReadoutFOV : 230
sSliceArray.asSlice[29].dThickness : 4
sSliceArray.asSlice[29].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[29].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[29].sNormal.dTra : 0.992737636
sSliceArray.asSlice[29].sPosition.dCor : -41.41667232
sSliceArray.asSlice[29].sPosition.dSag : -8.206241651
sSliceArray.asSlice[29].sPosition.dTra : 99.73226468
sSliceArray.asSlice[2].dPhaseFOV : 230
sSliceArray.asSlice[2].dReadoutFOV : 230
sSliceArray.asSlice[2].dThickness : 4
sSliceArray.asSlice[2].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[2].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[2].sNormal.dTra : 0.992737636
sSliceArray.asSlice[2].sPosition.dCor : -51.88073723
sSliceArray.asSlice[2].sPosition.dSag : 1.527866064
sSliceArray.asSlice[2].sPosition.dTra : -18.20496647
sSliceArray.asSlice[30].dPhaseFOV : 230
sSliceArray.asSlice[30].dReadoutFOV : 230
sSliceArray.asSlice[30].dThickness : 4
sSliceArray.asSlice[30].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[30].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[30].sNormal.dTra : 0.992737636
sSliceArray.asSlice[30].sPosition.dCor : -41.02911436
sSliceArray.asSlice[30].sPosition.dSag : -8.566764159
sSliceArray.asSlice[30].sPosition.dTra : 104.1003103ok so real talk — every single slice from [22] on down is giving copy-paste queen 👑: same dPhaseFOV : 230, same dReadoutFOV : 230, same dThickness : 4, and the sNormal triplets are literally identical down to 0.08808135446 / -0.08193693363 / 0.992737636. Only the sPosition values actually move. That's the vibe check: the geometry stays put, the position slides. 🛝
and notice how [2] shows up after [29] and before [30]? yeah — read the indices as text, not as numbers, and the whole ordering suddenly makes sense ✨ lexicographic ate, ngl.
sSliceArray.asSlice[3].dPhaseFOV : 230
sSliceArray.asSlice[3].dReadoutFOV : 230
sSliceArray.asSlice[3].dThickness : 4
sSliceArray.asSlice[3].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[3].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[3].sNormal.dTra : 0.992737636
sSliceArray.asSlice[3].sPosition.dCor : -51.49317927
sSliceArray.asSlice[3].sPosition.dSag : 1.167343556
sSliceArray.asSlice[3].sPosition.dTra : -13.83692088
sSliceArray.asSlice[4].dPhaseFOV : 230
sSliceArray.asSlice[4].dReadoutFOV : 230
sSliceArray.asSlice[4].dThickness : 4
sSliceArray.asSlice[4].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[4].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[4].sNormal.dTra : 0.992737636
sSliceArray.asSlice[4].sPosition.dCor : -51.10562131
sSliceArray.asSlice[4].sPosition.dSag : 0.8068210485
sSliceArray.asSlice[4].sPosition.dTra : -9.468875277
sSliceArray.asSlice[5].dPhaseFOV : 230
sSliceArray.asSlice[5].dReadoutFOV : 230
sSliceArray.asSlice[5].dThickness : 4
sSliceArray.asSlice[5].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[5].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[5].sNormal.dTra : 0.992737636
sSliceArray.asSlice[5].sPosition.dCor : -50.71806335
sSliceArray.asSlice[5].sPosition.dSag : 0.4462985405
sSliceArray.asSlice[5].sPosition.dTra : -5.100829679
sSliceArray.asSlice[6].dPhaseFOV : 230
sSliceArray.asSlice[6].dReadoutFOV : 230
sSliceArray.asSlice[6].dThickness : 4
sSliceArray.asSlice[6].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[6].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[6].sNormal.dTra : 0.992737636
sSliceArray.asSlice[6].sPosition.dCor : -50.33050539
sSliceArray.asSlice[6].sPosition.dSag : 0.08577603254
sSliceArray.asSlice[6].sPosition.dTra : -0.7327840804
sSliceArray.asSlice[7].dPhaseFOV : 230
sSliceArray.asSlice[7].dReadoutFOV : 230
sSliceArray.asSlice[7].dThickness : 4
sSliceArray.asSlice[7].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[7].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[7].sNormal.dTra : 0.992737636
sSliceArray.asSlice[7].sPosition.dCor : -49.94294743
sSliceArray.asSlice[7].sPosition.dSag : -0.2747464754
sSliceArray.asSlice[7].sPosition.dTra : 3.635261518
sSliceArray.asSlice[8].dPhaseFOV : 230
sSliceArray.asSlice[8].dReadoutFOV : 230
sSliceArray.asSlice[8].dThickness : 4
sSliceArray.asSlice[8].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[8].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[8].sNormal.dTra : 0.992737636
sSliceArray.asSlice[8].sPosition.dCor : -49.55538947
sSliceArray.asSlice[8].sPosition.dSag : -0.6352689834
sSliceArray.asSlice[8].sPosition.dTra : 8.003307116
sSliceArray.asSlice[9].dPhaseFOV : 230
sSliceArray.asSlice[9].dReadoutFOV : 230
sSliceArray.asSlice[9].dThickness : 4
sSliceArray.asSlice[9].sNormal.dCor : 0.08808135446
sSliceArray.asSlice[9].sNormal.dSag : -0.08193693363
sSliceArray.asSlice[9].sNormal.dTra : 0.992737636
sSliceArray.asSlice[9].sPosition.dCor : -49.16783151
sSliceArray.asSlice[9].sPosition.dSag : -0.9957914914
sSliceArray.asSlice[9].sPosition.dTra : 12.37135271then we finally escape the slice dungeon and hit the wrapper fields 🎀
sSliceArray.lConc : 1
sSliceArray.lSize : 31
sSliceArray.sTSat.dThickness : 50
sSliceArray.ucMode : 0x4
sSpecPara.lDecouplingType : 1
sSpecPara.lExcitationType : 1
sSpecPara.lNOEType : 1
sSpecPara.lPhaseCyclingType : 1
sSpecPara.lPhaseEncodingType : 1
sSpecPara.lRFExcitationBandwidth : 1
sSpecPara.lSpectralSuppression : 1
sSpecPara.ucRemoveOversampling : 0x1lSize says 31 and the indices above run all the way to [30] — do the math bestie, the numbers match and honestly? satisfying 🌸 also ucMode : 0x4 and ucRemoveOversampling : 0x1 are doing the hex thing, we love a little 0x moment.
and now for the transmitter/spectroscopy corner of the group chat, where the values get specific 👀
sTXSPEC.aRFPULSE[0].bAmplitudeValid : 0x1
sTXSPEC.aRFPULSE[0].flAmplitude : 263.068
sTXSPEC.aRFPULSE[0].tName : SincRFPulse
sTXSPEC.aRFPULSE[1].bAmplitudeValid : 0x1
sTXSPEC.aRFPULSE[1].flAmplitude : 31.9334
sTXSPEC.aRFPULSE[1].tName : SLoopFCSatNS
sTXSPEC.asNucleusInfo[0].bAmplitudeCorrectionValid : 1
sTXSPEC.asNucleusInfo[0].bFrequencyValid : 1
sTXSPEC.asNucleusInfo[0].bReferenceAmplitudeValid : 1
sTXSPEC.asNucleusInfo[0].flAmplitudeCorrection : 1
sTXSPEC.asNucleusInfo[0].flReferenceAmplitude : 259.084
sTXSPEC.asNucleusInfo[0].lFrequency : 63644057
sTXSPEC.asNucleusInfo[0].tNucleus : 1H
sTXSPEC.asNucleusInfo[1].bAmplitudeCorrectionValid : 1
sTXSPEC.asNucleusInfo[1].bFrequencyValid : 1
sTXSPEC.asNucleusInfo[1].bReferenceAmplitudeValid : 1
sTXSPEC.bBTBValid : 1
sTXSPEC.bKDynValid : 1
sTXSPEC.flKDynMagnitudeClipHigh : 1.04
sTXSPEC.flKDynMagnitudeClipLow : 0.96
sTXSPEC.flKDynMagnitudeMax : 1.5
sTXSPEC.flKDynMagnitudeMin : 0.5
sTXSPEC.flKDynPhaseClip : 0.174533
sTXSPEC.flKDynPhaseMax : 0.698132
sTXSPEC.lBTB1ParallelCapacity : 9
sTXSPEC.lBTB1SerialCapacity : 16
sTXSPEC.lBTB2ParallelCapacity : 8
sTXSPEC.lBTB2SerialCapacity : 16
sTXSPEC.lNoOfTraPulses : 2
sTXSPEC.ucExcitMode : 0x1
sTXSPEC.ucRFPulseType : 0x2
sTXSPEC.ucSimultaneousExcitation : 0x1two RF pulses, two names to remember: SincRFPulse with flAmplitude : 263.068 and SLoopFCSatNS with flAmplitude : 31.9334 🔥 and shoutout tNucleus : 1H, the main character of nuclei, with lFrequency : 63644057. note that asNucleusInfo[1] only has its three b…Valid flags and then dips — no cap, it just ends there 🙈
last stretch, the t… and uc… fields, aka the ones with actual readable names 💖
tProtocolName : ep2d+AF8-BOLD+AF8-evntX4
tReferenceImage0 : 1.3.12.2.1107.5.2.12.21296.30000006070308044128100000804
tReferenceImage1 : 1.3.12.2.1107.5.2.12.21296.30000006070308044128100000798
tReferenceImage2 : 1.3.12.2.1107.5.2.12.21296.30000006070308044128100000797
tSequenceFileName : %SiemensSeq%\ep2d_pace
tcurrentEVAProt : %CURRENTEVAPROT%\EVA6A.tmp
tdefaultEVAProt : %SiemensEvaDefProt%\BOLD\t-test_10B10A_moco.evp
ucDisableChangeStoreImages : 0x1
ucDixon : 0x1
ucOneSeriesForAllMeas : 0x1
ucPHAPSMode : 0x1tProtocolName : ep2d+AF8-BOLD+AF8-evntX4 — bestie the +AF8 bits are literally how underscores get escaped in there, and yes the protocol name has three underscores under all that drama 😭 also look at those three tReferenceImage UIDs — …804, …798, …797, so close and yet so distinctly themselves.
and them %…% placeholders in tSequenceFileName : %SiemensSeq%\ep2d_pace, tcurrentEVAProt : %CURRENTEVAPROT%\EVA6A.tmp and tdefaultEVAProt : %SiemensEvaDefProt%\BOLD\t-test_10B10A_moco.evp are staying exactly as they are — no touching, no "cleaning up", copy them character for character or the vibes (and the dump) break 💀
heads up: this is still the middle of the example output, not the end of the page — don't close the terminal yet, there's more coming and it does not get shorter 😌🫶
okay bestie, picking up right where we left off — the last few fields from that dump are literally these:
ucReconstructionMode : 0x1
ucScanRegionPosValid : 0x1
ulVersion : 0xbee332💖 GEMS Protocol Data Block 💖
Using this option you can dump as readable text what’s inside the private attribute from a typical GEMS MR DICOM file — it’s giving “decoded at last” ✨
Protocol Data Block : 0025,xx1b,GEMS_SERS_01
$ gdcmdump --pdb GE_MR_0025xx1bProtocolDataBlock.dcm ENTRY "Head First"
POSITION "Supine"
ANREF "NA"
COIL "HEAD"
PLANE "OBLIQUE"
SEDESCFLAG "1"
SEDESC "AX FSE T2"
IMODE "2D"
PSEQ "FSE-XL"
IOPT "FC, EDR, TRF, Fast"
PLUG "22"
FILTCHOICE "None"
BWRT "-1"
TRICKSIMG "1"
TAG_SPACE "7"
TAG_TYPE "None"
...🌸 ELSCINT Protocol Information 🌸
Using this option you can dump as readable text what’s inside the private attribute from a typical ELSCINT CT DICOM file — yes bestie, the private data is about to spill the tea 💅
ELSCINT Protocol Information: (01f7,26,ELSCINT1)
$ gdcmdump --elscint ELSCINT1_ProtocolInformation.dcm ELSCINT1 Dumping info from tag (01f7,26,elscint1)
ELSCINT1/Item name: []
ApprovedStep [yes]
RefSurview [1\0]
STD-first-img-pos [11.5]
current-step [yes]
ntimed-steps [0]
orig-n-slices [390]
protocol-file [Head_Multi_1032_usr.proc]
protocol-name [FACE-TRAUMA/Head/Hx]
protocol-path [/usr/diamond.root/spr/]
protocol-step [1]
protocol-version [2.51]
ELSCINT1/Item name: [doseright]
ACS [n/a]
ACS-bed-position [0]
ACS-calc-mas [0]
ACS-iq-parameter [0]
ACS-learn-allowed [no]
ACS-water-radius [-1.000000]
ACS-water-radius-scan [-1]
...🦋 VEPRO Protocol Information 🦋
Using this option you can dump as readable text what’s inside the private attribute from a typical VEPRO CT DICOM file — and yes, the original label literally says ELSCINT down there, bestie, we’re not fixing it, we’re just reporting it fr 💀
ELSCINT Protocol Information: (0055,20,VEPRO VIM 5.0 DATA)
$ gdcmdump --vepro VEPRO_ProtocolInformation.dcm VIMDATA2: (0055,20,VEPRO VIM 5.0 DATA)
ID: VIM
Version: 5.0
UserName:
UserAdress1: Name of Institution
UserAdress2: Street of Institution
UserAdress3: City of Institution
UserAdress4:
UserAdress5:
RecDate: 20101001
RecTime: 211321
RecPlace:
RecSource: DICOM Distributor
DF1: P-09/10-41808
DF2: Sultana Razia
DF3: 19411001
DF4: F
DF5:
DF6:
DF7:
DF8: CT Scan Brain without Contrast
DF9: 10/10-0034873
DF10: 10/10-00348
DF11:
DF12:
DF13:
DF14: Head 0.5
DF15: 4
DF16:
DF17:
DF18:
DF19:
DF20:
StudyUID: 1.2.392.200036.9116.2.6.1.48.1214228007.1285934880.206831
SeriesUID: 1.2.392.200036.9116.2.6.1.48.1214228007.1285935201.938653
Modality: CT🎀 Philips Private MR Series Data Storage (1.3.46.670589.11.0.0.12.2) 🎀
Using this option you can dump as readable text what’s inside the private attribute from a typical Philips Private MR Series Data Storage file — it’s a whole little ecosystem in there, no cap 🫶
PMS Series Data Storage (2005,32,Philips MR Imaging DD 002)
$ gdcmdump --sds PMS_SeriesDataStorage.dcm ...
PMS/Item name: [PDF_CONTROL_GEN_PARS/IEEE_PDF/Y ]
...
PMS/Item name: [PDF_CONTROL_PREP_PARS /IEEE_PDF/Y ]
...
PMS/Item name: [PDF_CONTROL_RECON_PARS/IEEE_PDF/Y ]
...
PMS/Item name: [PDF_CONTROL_SCAN_PARS /IEEE_PDF/Y ]
...
PMS/Item name: [PDF_EXAM_PARS /IEEE_PDF/Y ]
...
PMS/Item name: [PDF_HARDWARE_PARS /IEEE_PDF/Y ]
...
PMS/Item name: [PDF_PREP_PARS /IEEE_PDF/Y ]
...
PMS/Item name: [PDF_SPT_PARS/IEEE_PDF/Y ]
SP_scan_resol [256\256] # 2
SP_pda_profiles [0\0] # 2
SP_filter [324074] # 1
SP_analyse_with_iqt [0] # 1
SP_main_system_type [3] # 1
SP_gradient_system [6] # 1
SP_coil_type [2\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0] # 16
SP_coil_id [2\34\0\0\0\0\0\0\0\0\0\0\0\0\0\0] # 16
SP_coil_part [0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0] # 16
SP_act_q [0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0] # 16
SP_act_coil_freq [0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0] # 16
SP_coil_m_pos [255\255\255\0\0\0\0\0\0\0\0\0\0\0\0\255] # 16
SP_coil_t_pos [255\128\255\0\0\0\0\0\0\0\0\0\0\0\0\255] # 16
SP_surface_coil_con [0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0] # 16
SP_proton_freq [127801349] # 1
SP_tm_result [2\2\2\2\2\2\2\2\2\2\2\2\2\2\2\2] # 16
SP_f0_result [0] # 1
SP_as_result [0] # 1
SP_po_result [0] # 1
SP_rg_result [0] # 1
SP_dc_result [0] # 1
SP_ph_result [0] # 1
...💜 Encapsulated ASN1 Structure 💜
This option is mainly used for dumping the ASN1 structure of the encrypted Attribute (0040,0520) — this is like the boss level of the dump, bestie, and it ate 🔥
$ gdcmdump encrypted.dcm ...
(0400,0500) SQ # u/l,1 Encrypted Attributes Sequence
(fffe,e000) na (Item with undefined length)
(0400,0510) UI [1.2.840.10008.1.2] # 18,1 Encrypted Content Transfer Syntax UID
(0400,0520) OB 30\\82\\03\\ba\\06\\09\\2a\\86\\48\\55\\04\\08\\13 # 958,1 Encrypted Content
(fffe,e00d)
(fffe,e0dd)
... $ gdcmdump --asn1 encrypted.dcm 0:d=0 hl=4 l= 954 cons: SEQUENCE
4:d=1 hl=2 l= 9 prim: OBJECT :pkcs7-envelopedData
15:d=1 hl=4 l= 939 cons: cont [ 0 ]
19:d=2 hl=4 l= 935 cons: SEQUENCE
23:d=3 hl=2 l= 1 prim: INTEGER :00
26:d=3 hl=4 l= 366 cons: SET
30:d=4 hl=4 l= 362 cons: SEQUENCE
34:d=5 hl=2 l= 1 prim: INTEGER :00
37:d=5 hl=2 l= 82 cons: SEQUENCE
39:d=6 hl=2 l= 69 cons: SEQUENCE
41:d=7 hl=2 l= 11 cons: SET
43:d=8 hl=2 l= 9 cons: SEQUENCE
45:d=9 hl=2 l= 3 prim: OBJECT :countryName
50:d=9 hl=2 l= 2 prim: PRINTABLESTRING :AU
54:d=7 hl=2 l= 19 cons: SET
56:d=8 hl=2 l= 17 cons: SEQUENCE
58:d=9 hl=2 l= 3 prim: OBJECT :stateOrProvinceName
63:d=9 hl=2 l= 10 prim: PRINTABLESTRING :Some-State
75:d=7 hl=2 l= 33 cons: SET
77:d=8 hl=2 l= 31 cons: SEQUENCE
79:d=9 hl=2 l= 3 prim: OBJECT :organizationName
84:d=9 hl=2 l= 24 prim: PRINTABLESTRING :Internet Widgits Pty Ltd
110:d=6 hl=2 l= 9 prim: INTEGER :AC966D88787A51B4
121:d=5 hl=2 l= 13 cons: SEQUENCE
123:d=6 hl=2 l= 9 prim: OBJECT :rsaEncryption
134:d=6 hl=2 l= 0 prim: NULL
136:d=5 hl=4 l= 256 prim: OCTET STRING [HEX DUMP]:822368070285AD756C962ECB973514B291F946...
396:d=3 hl=4 l= 558 cons: SEQUENCE
400:d=4 hl=2 l= 9 prim: OBJECT :pkcs7-data
411:d=4 hl=2 l= 29 cons: SEQUENCE
413:d=5 hl=2 l= 9 prim: OBJECT :aes-256-cbc
424:d=5 hl=2 l= 16 prim: OCTET STRING [HEX DUMP]:3B49AFE71749F2BFF1519EBAEA95A393
442:d=4 hl=4 l= 512 prim: cont [ 0 ]🌈 SEE ALSO 🌈
👑 AUTHOR 👑
- Mathieu Malaterre — Main developer
🎀 COPYRIGHT 🎀
Copyright © 2006, 2011 Mathieu Malaterre
this iconic page is from GDCM 3.0.24, dated 12/25/2025 — periodt 💖
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