Hi Emad - The bvecs file that you sent is formatted so that each column is a gradient vector. The first column is [0, 0, 0] and this corresponds to a b-value equal to 0 in the bvals file. So that's fine. You'll just have to download the latest update to tracula to be able to use this column-wise format, as previously the bvecs file had to be formatted in rows.

a.y

On Tue, 10 Dec 2013, Emad Ahmadi wrote:

Hello,

I'm using TRACULA to analyze images obtained by a non-Siemens scanner, and I'm using dcm2niigui app to generate bvec and bval files from DICOMs.

My question is whether or not the attached bvec and bval files match, because the 0 bval is the first entry while the <0,0,0> bvec is somewhere in the middle. If they don't, how should I generate the correct bval/bvec files from dicoms?

Lots of thanks, Emad