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open-discussion > Siemens DICOM hdr: FoV and Row/Column values
Sep 25, 2013 03:09 PM | Vincent Koppelmans
Siemens DICOM hdr: FoV and Row/Column values
Hi all,
I used dcmdump to extract the scan protocol from some T1 and fMRI scans.
I am checking some scan parameters by looking at the following DICOM codes:
(0051,100b) =Matrix size
(0051,100c) =Field of View
(0028,0010) =Rows
(0028,0011) =Columns
For the T1, the values stored under these codes matches up with the scanner settings
(i.e. 288*288; 270*270; 288; 288).
However, for the fMRI scan, the scanner settings do not match up with the values stored in the DICOM headers:
Matrix scanner: 94*94
Matrix DICOM: 94*94
FoV scanner: 240*240
FoV DICOM: 1439*1439
Rows scanner: 94
Rows DICOM: 564
Columns scanner: 94
Columns DICOM: 564
The in-plane voxel size of my fMRI images is 2.5531914 cubic (240/94)
This is not the same as 1439/564 (=2.551418)
Can anybody explain to me where the numbers 1439 and 564 are coming from?
Thanks,
Vincent
I used dcmdump to extract the scan protocol from some T1 and fMRI scans.
I am checking some scan parameters by looking at the following DICOM codes:
(0051,100b) =Matrix size
(0051,100c) =Field of View
(0028,0010) =Rows
(0028,0011) =Columns
For the T1, the values stored under these codes matches up with the scanner settings
(i.e. 288*288; 270*270; 288; 288).
However, for the fMRI scan, the scanner settings do not match up with the values stored in the DICOM headers:
Matrix scanner: 94*94
Matrix DICOM: 94*94
FoV scanner: 240*240
FoV DICOM: 1439*1439
Rows scanner: 94
Rows DICOM: 564
Columns scanner: 94
Columns DICOM: 564
The in-plane voxel size of my fMRI images is 2.5531914 cubic (240/94)
This is not the same as 1439/564 (=2.551418)
Can anybody explain to me where the numbers 1439 and 564 are coming from?
Thanks,
Vincent
Threaded View
Title | Author | Date |
---|---|---|
Vincent Koppelmans | Sep 25, 2013 | |
Bob Kraft | Sep 25, 2013 | |
Vincent Koppelmans | Sep 26, 2013 | |
Michael Erb | Sep 26, 2013 | |