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Hello Christina you were right, one of the problems was the merging, but also find out that the main problem was the conversion of DICOM to mnc files. Problem sorted now. Thanks a lot Salomi On Oct 2, 2009, at 12:54 PM, Chr. Rossmanith wrote: > Hi, > > your data.nii.gz comprises only a single volume (dim4=1; if the > first information printed corresponds to data.nii.gz) but 33 > volumes are expected. Maybe you didn't avwmerge the different > diffusion weighted volumes? > > Christina Rossmanith > > > > SUBSCRIBE FSL Anonymous wrote: >> Hello all >> >> I ve been trying to run dtifit command on my data and after errors >> coming up, I did a Bedpost_datacheck and came up with the below: >> data_type FLOAT32 >> dim1 192 >> dim2 192 >> dim3 50 >> dim4 1 >> datatype 16 >> pixdim1 1.2500000000 >> pixdim2 1.2500000000 >> pixdim3 2.5000000000 >> pixdim4 1.0000000000 >> cal_max 0.0000 >> cal_min 0.0000 >> file_type NIFTI-1+ >> >> /data/User/salomi/Desktop/DTI/DTI_Tester/nodif_brain_mask >> data_type FLOAT32 >> dim1 192 >> dim2 192 >> dim3 50 >> dim4 1 >> datatype 16 >> pixdim1 1.2500000000 >> pixdim2 1.2500000000 >> pixdim3 2.5000000000 >> pixdim4 1.0000000000 >> cal_max 0.0000 >> cal_min 0.0000 >> file_type NIFTI-1+ >> >> num lines in /data/User/salomi/Desktop/DTI/DTI_Tester/bvals 1 >> num words in /data/User/salomi/Desktop/DTI/DTI_Tester/bvals 33 >> num lines in /data/User/salomi/Desktop/DTI/DTI_Tester/bvecs 3 >> num words in /data/User/salomi/Desktop/DTI/DTI_Tester/bvecs 99 >> number of elements in bvals is not equal to number of vols in data >> number of elements per line in bvecs is not equal to number of >> vols in data >> >> Attached are my bvecs and bvals >> >> Anyone knows where the problem is? I don't seem to understand >> where the error is. >> Thank you in advance, >> Salomi K. >> >> >> >> >> This message has been checked for viruses but the contents of an attachment may still contain software viruses, which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation.