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Dear TRACULA experts
I use the newest version of TRACULA (FS 7.2, official release) and face the same problem as already reported by another user https://secure-web.cisco.com/1X5AHUcHXClyJtmxIDuq0cEQ7oR9Y81XGrojDN0ZsSnvYnG...
As suggested by the answer to the above link, this other user did not use an official release of FS, and no explicit solution was mentioned in this link. I used an official version, but got the same error. BTW, if using TRACULA in FS 7.1.1, this error did not occur.
The error that occurs is the following (log and config file attached):
error: niiRead(): error opening file /Volumes/Datenspeicher/01_IPS/04_C_DTI_TRACULA/01_TRACULA_Results_NIFTI_FS720/IPS_CO_007/dmri/dwi_orig_las.nii.gz
As described by the other user, the file is initially created, but then renamed to dwi.nii.gz and therefore not present in the dmri directory. BTW, my data is already in LAS orientation.
The error only occurs if using NIFTI files but not if using the DICOM files.
Actually, I could use DICOMs, but I faced the problem that dTE could not be found in the DICOM header and/or b0info.dat file, respectively, (see error below) because only one TE is present in the DICOM header of the phase image as suggested by the meta data in the OSIRIX DICOM viewer, and therefore I would rather use NIFTI files and define dTE in the config file as it has been suggested that this is possible in TRACULA in FS 7.2.
writing to /Volumes/Datenspeicher/01_IPS/04_C_DTI_TRACULA/00_TRACULA_Results_DICOMs_FS720/IPS_CO_007/dmri/b0pha.nii.gz... mri_probedicom --i /Volumes/Datenspeicher/01_IPS/04_C_DTI_TRACULA/00_TRACULA_Prepared_DICOMs_FS720/IPS_CO_007/Phase/33163229.dcm > /Volumes/Datenspeicher/01_IPS/04_C_DTI_TRACULA/00_TRACULA_Results_DICOMs_FS720/IPS_CO_007/dmri/b0info.dat ERROR: Need dTE for field map /Volumes/Datenspeicher/01_IPS/04_C_DTI_TRACULA/00_TRACULA_Prepared_DICOMs_FS720/IPS_CO_007/Phase/33163229.dcm
However, if I try to use DICOM files and "set dTE = 2.46“ in the config file, the same error occurred as when not setting dTE in the config file.
Thanks in advance for any advice
Best regards Jürgen