Dear Experts,
I was hoping you could help me with the following problem.
Tracula failed when I attempted to use Siemens (Skyra) dicoms as input for the
configuration file, so I converted the dicoms to niftii format using dcm2nii.
I used the gradient information of the bvec file created by dcm2nii ( after
re-assembling it into the appropriate 3 column format) and specified it as the
bvec.txt file to run Tracula. All post- processing worked fine and the fiber
paths look ‘ok’ as far as I can tell.
Here is the conundrum:
When I compared the bvec gradients from the dcm2nii conversion to the SIEMENS
hardwired protocol, the sign of the ‘z’ direction appears to have been flipped?
I am not sure why this happened and whether to choose the “hardwired” Siemens
scanner bvecs or the ones created by the niftii conversion. Which ones are
correct to use?
Very best regards,
Catherine
_______________________________________________
Freesurfer mailing list
[email protected]
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.
