open-discussion
open-discussion > DTIPrep problem with b=0 not in first volume
Dec 5, 2017 12:12 PM | Giuseppe Cabras - University of Udine
DTIPrep problem with b=0 not in first volume
Hello support for DTIPrep,
I have successfully used DTIPrep 1.2.4 and DWIConvert 1.0 to create a pre-processing pipeline for my local dwi.nii which has a b = 0 to the first volume. Now, I'm trying to pre-process with the same pipeline subjects from a different center that has a b = 0 not in the first volume, but a bit in the middle of dwi.nii 4Dimage. Apparently DTIPrep and DWIConvert work correctly and do the job, but when I look at the output QCed.bval and QCed.bvec, the resulting average b = 0 bval / bvec is in the first element, as expected, while the QCed.nii has the b = 0 NOT in the first volume and, of course, FA, MD and everything is in disarray. Where am I wrong?
Greetings,
Giuseppe
I have successfully used DTIPrep 1.2.4 and DWIConvert 1.0 to create a pre-processing pipeline for my local dwi.nii which has a b = 0 to the first volume. Now, I'm trying to pre-process with the same pipeline subjects from a different center that has a b = 0 not in the first volume, but a bit in the middle of dwi.nii 4Dimage. Apparently DTIPrep and DWIConvert work correctly and do the job, but when I look at the output QCed.bval and QCed.bvec, the resulting average b = 0 bval / bvec is in the first element, as expected, while the QCed.nii has the b = 0 NOT in the first volume and, of course, FA, MD and everything is in disarray. Where am I wrong?
Greetings,
Giuseppe
Threaded View
| Title | Author | Date |
|---|---|---|
| Giuseppe Cabras | Dec 5, 2017 | |
| Martin Styner | Dec 5, 2017 | |
| Giuseppe Cabras | Dec 6, 2017 | |
| Martin Styner | Dec 7, 2017 | |