Hi Barbara, thanks for your reply. I checked the dwi series on a viewer and it looks fine: I have 1960 dicoms, corresponding to 56 slices x 35 directions specified in the bval/bvec. Also, I was able to obtain the FA and MD maps through fsl using the very same dicoms and bval/bvec. Any suggestion? Thanks
On Thu, Aug 28, 2014 at 7:30 PM, Barbara Kreilkamp <bakk....@googlemail.com> wrote: Dear Michele, I cannot find anything wrong with your bvec and bval files. Seeing as you had an errormessage related to the dwi (the one about the dwi_frame.nii.gz): Did you check that your dwi data have the same amount of volumes as entries in bvec and bval? Good luck, Barbara On 28/08/2014 22:47, Michele Cavallari wrote: Hi, I'm having some problems with the first command of the tracula pipeline. I am using FreeSurfer 5.3 on a mac (OS 10.9). The problem seems to be related to the bvecs file. I received the following error message: niiRead(): error opening file /path/to/dmri/dwi_frame.nii.gz I read some threads available on your website, but couldn't figured out a solution yet. I tried to organize the bvecs in columns, as opposed to the original configuration in rows. By doing that and re-launching the pre-processing command I obtained a differente error message: Error: bvecs and bvals don't have the same number of entries The original bvals and bvecs files seem to have the same numbers of entries to me. But the bvecs file produced by the processing - both the bvecs.norot and the bvecs files in the dmri folder - don't have all the information of the vectors. I am enclosing a zip folder with attachments: 1) original bvecs and bvals files organized in rows and columns 2) bvecs and bvals files generated by tracula 3) error logs Let me know if you need any other information. Thanks in advance for your help. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu 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. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu 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. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
