The available dicom headers are (0002,0000) File Meta Information Group Length 194
(0002,0001) File Meta Information Version 00\01
(0002,0002) Media Storage SOP Class UID 1.2.840.10008.5.1.4.1.1.4
(0002,0003) Media Storage SOP Instance UID 1.3.12.2.1107.5.2.38.51020.2023102714004431601056308
(0002,0010) Transfer Syntax UID 1.2.840.10008.1.2.1 (Explicit VR Little Endian)
(0002,0012) Implementation Class UID 1.3.12.2.1107.5.8.15.10.20090701
(0002,0013) Implementation Version Name syngo.via
(0008,0005) Specific Character Set ISO_IR 100
(0008,0008) Image Type DERIVED\PRIMARY\DIFFUSION\TRACEW\NORM\DIS2D\DFC
(0008,0012) Instance Creation Date 20231027
(0008,0013) Instance Creation Time 140044.685000
(0008,0016) SOP Class UID 1.2.840.10008.5.1.4.1.1.4
(0008,0018) SOP Instance UID 1.3.12.2.1107.5.2.38.51020.2023102714004431601056308
(0008,0020) Study Date 20231027
(0008,0021) Series Date 20231027
(0008,0022) Acquisition Date 20231027
(0008,0023) Content Date 20231027
(0008,0030) Study Time 134517.445000
(0008,0031) Series Time 140044.620000
(0008,0032) Acquisition Time 140040.162500
(0008,0033) Content Time 140044.685000
(0008,0050) Accession Number
(0008,0060) Modality MR
(0008,0070) Manufacturer SIEMENS
(0008,0080) Institution Name NUS
(0008,0081) Institution Address Street StreetNo,City,District,SG,ZIP
(0008,0090) Referring Physician Name
(0008,1010) Station Name MRC51020
(0008,1030) Study Description Active Projects_Liver
(0008,103E) Series Description Abd_ep2d_diff_b50_500_tra_liver_TRACEW_DFC
(0008,1040) Institutional Department Name Department
(0008,1050) Performing Physician Name
(0008,1080) Admitting Diagnoses Description
(0008,1090) Manufacturer Model Name Biograph_mMR
(0008,1140) Referenced Image Sequence
(FFFE,E000) Item
(0008,1150) Referenced SOP Class UID 1.2.840.10008.5.1.4.1.1.4
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(FFFE,E00D) Item Delimitation Item
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(FFFE,E00D) Item Delimitation Item
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(0008,1150) Referenced SOP Class UID 1.2.840.10008.5.1.4.1.1.4
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(FFFE,E00D) Item Delimitation Item
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(0010,0010) Patient Name HPCC002
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(0010,0021) Issuer Of Patient ID
(0010,0030) Patient Birth Date
(0010,0032) Patient Birth Time
(0010,0040) Patient Sex
(0010,1000) RETIRED_ Other Patient I Ds
(0010,1001) Other Patient Names
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(0010,1020) Patient Size 1.65
(0010,1030) Patient Weight 76.5
(0010,1040) Patient Address
(0010,2000) Medical Alerts
(0010,2110) Allergies
(0010,2160) Ethnic Group
(0010,4000) Patient Comments
(0018,0015) Body Part Examined ABDOMEN
(0018,0020) Scanning Sequence EP
(0018,0021) Sequence Variant SK\SP
(0018,0022) Scan Options PFP\SFS
(0018,0023) MR Acquisition Type 2D
(0018,0024) Sequence Name ep_b500t
(0018,0025) Angio Flag N
(0018,0050) Slice Thickness 5
(0018,0080) Repetition Time 5600
(0018,0081) Echo Time 69
(0018,0083) Number Of Averages 3
(0018,0084) Imaging Frequency 123.24888
(0018,0085) Imaged Nucleus 1H
(0018,0086) Echo Numbers 1
(0018,0087) Magnetic Field Strength 3
(0018,0088) Spacing Between Slices 6
(0018,0089) Number Of Phase Encoding Steps 110
(0018,0091) Echo Train Length 55
(0018,0093) Percent Sampling 100
(0018,0094) Percent Phase Field Of View 80
(0018,0095) Pixel Bandwidth 2085
(0018,1000) Device Serial Number 51020
(0018,1020) Software Versions syngo MR E11
(0018,1030) Protocol Name Abd_ep2d_diff_b50_500_tra_liver
(0018,1251) Transmit Coil Name Body
(0018,1310) Acquisition Matrix 160\0\0\128
(0018,1312) In Plane Phase Encoding Direction COL
(0018,1314) Flip Angle 90
(0018,1315) Variable Flip Angle Flag N
(0018,1316) SAR 1.9030972632089
(0018,1318) d Bdt 0
(0018,5100) Patient Position HFS
(0019,0010) Private Creator SIEMENS MR HEADER
(0019,1008) Unknown Tag & Data IMAGE NUM 4
(0019,1009) Unknown Tag & Data 1.0
(0019,100B) Unknown Tag & Data 90000
(0019,100C) Unknown Tag & Data 500
(0019,100D) Unknown Tag & Data ISOTROPIC
(0019,100F) Unknown Tag & Data Fast
(0019,1011) Unknown Tag & Data No
(0019,1012) Unknown Tag & Data 0\0-1644
(0019,1013) Unknown Tag & Data 0\0-1639
(0019,1014) Unknown Tag & Data 0\0\5
(0019,1015) Unknown Tag & Data -186.98616623999999-175.79680443000001\56.572551730000001
(0019,1016) Unknown Tag & Data 86.53
(0019,1017) Unknown Tag & Data 1
(0019,1018) Unknown Tag & Data 1500
(0019,1028) Unknown Tag & Data 27.411999999999999
(0020,000D) Study Instance UID 1.3.12.2.1107.5.2.38.51020.30000023102700401959200000029
(0020,000E) Series Instance UID 1.3.12.2.1107.5.2.38.51020.2023102713591287080553797.0.0.0
(0020,0010) Study ID 2
(0020,0011) Series Number 8
(0020,0012) Acquisition Number 1
(0020,0013) Instance Number 44
(0020,0032) Image Position Patient -186.98616623878-175.7968044281\61.572551727295
(0020,0037) Image Orientation Patient 1\0\0\0\1\0
(0020,0052) Frame Of Reference UID 1.3.12.2.1107.5.2.38.51020.2.20231027134627659.0.0.0
(0020,1040) Position Reference Indicator
(0020,1041) Slice Location 61.572551727295
(0020,4000) Image Comments Liver DWI
(0021,0010) Private Creator SIEMENS MR SDS 01
(0021,0011) Private Creator SIEMENS MR SDI 02
(0021,1001) Unknown Tag & Data 76
(0021,1004) Unknown Tag & Data 1
(0021,1005) Unknown Tag & Data 0\0\5
(0021,1006) Unknown Tag & Data void
(0021,1007) Unknown Tag & Data NUMARIS/4
(0021,1008) Unknown Tag & Data Fast
(0021,1009) Unknown Tag & Data p2
(0021,100A) Unknown Tag & Data 1.00000000
(0021,100C) Unknown Tag & Data +LPH
(0021,100D) Unknown Tag & Data 0
(0021,100F) Unknown Tag & Data 39.99589920\23.36529922\23.68700027
(0021,1010) Unknown Tag & Data 51190004
(0021,1011) Unknown Tag & Data 0.00000000
(0021,1012) Unknown Tag & Data 2
(0021,1013) Unknown Tag & Data 0.00000000
(0021,1014) Unknown Tag & Data 0
(0021,1016) Unknown Tag & Data 0.00000000
(0021,1017) Unknown Tag & Data 0.00000000
(0021,1018) Unknown Tag & Data Whole Body
(0021,1019) Unknown Tag & Data 3c\58\50\72\6f\74\6f\63\6f\6c\3e\20\0a\7b\0a\20\20\3c\4e\61\6d\65…
(0021,101A) Unknown Tag & Data BP1,2;SP2,3
(0021,101B) Unknown Tag & Data 1.00000000
(0021,101C) Unknown Tag & Data 36.84640503\0.79082942-0.03634150
(0021,101D) Unknown Tag & Data 2
(0021,1022) Unknown Tag & Data SIEMENS
(0021,1023) Unknown Tag & Data 0
(0021,1025) Unknown Tag & Data 0\0-1644
(0021,1026) Unknown Tag & Data 10\3\14\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\524288\256\0\0\0\0\0\6157\0\0\0\0\0\0
(0021,1027) Unknown Tag & Data 0
(0021,102A) Unknown Tag & Data 255\39\238\34\39\238\238\50\238\51\238
(0021,102B) Unknown Tag & Data 1;HFS;76.50;54.00;2;0;2;1386475355
(0021,102C) Unknown Tag & Data 1000000.00000000\2049.22099049\2049.22098809
(0021,102D) Unknown Tag & Data 2.00000000\1.90309726\0.00000000
(0021,102E) Unknown Tag & Data 2
(0021,102F) Unknown Tag & Data 28.00000000\26.00000000\27.00000000
(0021,1030) Unknown Tag & Data 0.00000000
(0021,1031) Unknown Tag & Data -1639
(0021,1032) Unknown Tag & Data 0
(0021,1033) Unknown Tag & Data AS097
(0021,1034) Unknown Tag & Data 1.00000000
(0021,1035) Unknown Tag & Data 0.92187738
(0021,1036) Unknown Tag & Data 0.00000000
(0021,1038) Unknown Tag & Data 626.24823400
(0021,103B) Unknown Tag & Data 0.00000000
(0021,103D) Unknown Tag & Data NONE
(0021,1044) Unknown Tag & Data 100.00000000\2.09524461
(0021,1045) Unknown Tag & Data NO
(0021,1046) Unknown Tag & Data 5429.33951369
(0021,1047) Unknown Tag & Data IEC
(0021,1048) Unknown Tag & Data
(0021,1049) Unknown Tag & Data
(0021,1050) Unknown Tag & Data 1
(0021,1051) Unknown Tag & Data 55
(0021,1053) Unknown Tag & Data U
(0021,1103) Unknown Tag & Data 90000.00000000
(0021,1104) Unknown Tag & Data 86.53000000
(0021,1105) Unknown Tag & Data 500
(0021,1106) Unknown Tag & Data X_1_1_2_1_1_1_14_1_1_9_1_343
(0021,111A) Unknown Tag & Data measured
(0021,111C) Unknown Tag & Data 1
(0021,1121) Unknown Tag & Data ISOTROPIC
(0021,1124) Unknown Tag & Data 0
(0021,1133) Unknown Tag & Data 80
(0021,1135) Unknown Tag & Data 0
(0021,1141) Unknown Tag & Data measured
(0021,1142) Unknown Tag & Data 1500
(0021,1145) Unknown Tag & Data 0\0-1639
(0021,1148) Unknown Tag & Data 32
(0021,1149) Unknown Tag & Data 64
(0021,114F) Unknown Tag & Data BP1,2;SP2,3
(0021,1151) Unknown Tag & Data 134217728
(0021,1153) Unknown Tag & Data 27.411999999999999
(0021,1154) Unknown Tag & Data 1
(0021,1156) Unknown Tag & Data p2
(0021,1158) Unknown Tag & Data 128p160
(0021,1159) Unknown Tag & Data 0\0\5
(0021,115B) Unknown Tag & Data -186.98616623999999-175.79680443000001\56.572551730000001
(0021,115E) Unknown Tag & Data 26
(0021,1168) Unknown Tag & Data 47\41\41\58\6b\56\4e\52\41\41\44\2f\2f\2f\2f\2f\2f\76\38\41\34\50…
(0021,1171) Unknown Tag & Data XXXXXXXX
(0021,1175) Unknown Tag & Data DERIVED\PRIMARY\DIFFUSION\TRACEW
(0021,1176) Unknown Tag & Data ACCAlgo:16\NormalizeAlgo:PreScan
(0025,0010) Private Creator SIEMENS MR EXTRACTED CSA HEADER
(0025,1001) Unknown Tag & Data
(FFFE,E000) Item
(0025,0010) Private Creator SIEMENS MR EXTRACTED CSA HEADER
(0025,1002) Unknown Tag & Data SIEMENS CSA HEADER
(0025,1003) Unknown Tag & Data (0029,0010)
(0025,1004) Unknown Tag & Data 1
(FFFE,E00D) Item Delimitation Item
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(0025,0010) Private Creator SIEMENS MR EXTRACTED CSA HEADER
(0025,1002) Unknown Tag & Data SIEMENS CSA HEADER
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(0025,1004) Unknown Tag & Data 1
(FFFE,E00D) Item Delimitation Item
(FFFE,E0DD) Sequence Delimitation Item
(0028,0002) Samples Per Pixel 1
(0028,0004) Photometric Interpretation MONOCHROME2
(0028,0010) Rows 128
(0028,0011) Columns 160
(0028,0030) Pixel Spacing 2.375\2.375
(0028,0100) Bits Allocated 16
(0028,0101) Bits Stored 12
(0028,0102) High Bit 11
(0028,0103) Pixel Representation 0
(0028,0106) Smallest Image Pixel Value 0
(0028,0107) Largest Image Pixel Value 390
(0028,1050) Window Center 157
(0028,1051) Window Width 405
(0028,1055) Window Center Width Explanation Algo1
(0029,0010) Private Creator SIEMENS CSA HEADER
(0029,0011) Private Creator SIEMENS MEDCOM HEADER2
(0029,1008) Unknown Tag & Data IMAGE NUM 4
(0029,1009) Unknown Tag & Data 20231027
(0029,1010) Unknown Tag & Data 53\56\31\30\04\03\02\01\66\00\00\00\4d\00\00\00\45\63\68\6f\4c\69…
(0029,1018) Unknown Tag & Data MR
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(0029,1020) Unknown Tag & Data 53\56\31\30\04\03\02\01\56\00\00\00\4d\00\00\00\55\73\65\64\50\61…
(0029,1160) Unknown Tag & Data com
(0040,0244) Performed Procedure Step Start Date 20231027
(0040,0245) Performed Procedure Step Start Time 134517.497000
(0040,0253) Performed Procedure Step ID MR20231027134517
(0040,0254) Performed Procedure Step Description Active ProjectsLiver
(0040,0280) Comments On The Performed Procedure Step
(0051,0010) Private Creator SIEMENS MR HEADER
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(0051,1009) Unknown Tag & Data 1.0
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(0051,1012) Unknown Tag & Data TP H5
(0051,1013) Unknown Tag & Data +LPH
(0051,1016) Unknown Tag & Data p2 DIFFUSION/TRACEW/NORM
(0051,1017) Unknown Tag & Data SL 5.0
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(0400,0561) Original Attributes Sequence
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(0400,0550) Modified Attributes Sequence
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(0008,0005) Specific Character Set ISO_IR 100
(0008,0020) Study Date 20231027
(0008,0030) Study Time 134517.445000
(0008,1030) Study Description Active Projects Liver
(0010,0010) Patient Name
(0010,0020) Patient ID
(0010,0030) Patient Birth Date
(0010,0040) Patient Sex
(0010,1010) Patient Age
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(0020,000D) Study Instance UID 1.3.12.2.1107.5.2.38.51020.30000023102700401959200000029
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This is a DERIVED TRACE volume, not the raw diffusion images. A trace is is based on all the raw source images, so it does not have a bvec associated with it. In your case, it is estimated from images where the bval is 500 (0019,100C is the private tag DiffusionBFactorSiemens). While scanner created derived images are useful for clinical studies, in research we typically only have the scanner store the raw source images. The raw source time series will have variable bval and bvec files associated with it, and tools like dcm2niix will extract those for you (be aware, Siemens reports bvecs in world space, and BIDS/fsl requires them in image space). You will be able to derive better Trace images with that the scanner after standard pre-processing (dwidenoise, mrdegibbs, eddy, topup).
Thanks for the information. I was also wondering why there is the Trace info and not without it. The Radiographers have pushed the Diffusion trace instead of Diffusion raw scans.
Can I know how we can convert the bvecs from world space to image space?
You can adjust the sequence in the Diffusion tab on the MRI console. Most clinical teams like to save derived images (Trace = On, Tensor = On, FA = On, ADC = On), and discard the raw data (Diff. Weighted Images Off). Likewise, clinicians prefer half-sphere directions and bipolar acquisitions to reduce the geometric distortion. Again, research teams often reverse these choices.
Research scientists acquiring raw data suitable for dwidenoise, mrdegibbs, eddy and topup tand therefor hey can remove the geometric distortion in the post processing. The monopolar sequence allows a shorter TE, which is often desirable for SNR.
For more details see my comments here and here.
For your current E11 make sure to set mosaic on (to reduce the number of DICOM files), but make sure to NOT save mosaics when you upgrade to XA30 (which supports enhanced DICOM).
