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Hi!

Your data.nii.gz has only one volume (dim4=1).
Did you take the output of BET which is only the first volume, probably?
You should take the original data not the output of bet.
The original data should have 33 volumes (dim4=33).

Hope this helps,
best, Markus



2009/10/2 SUBSCRIBE FSL Anonymous <[log in to unmask]>
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.








--
Dr. med. Markus Gschwind, M.D.
Laboratory for Neurology and Imaging of Cognition
Dept of Neurosciences
University Medical Center (CMU)
1 Michel-Servet - 1211 GENEVA - CH

Tel 0041 (0) 22 379 5324
Fax 0041 (0) 22 379 5402
email: [log in to unmask]
http://labnic.unige.ch


God said, let there be light: and there was light. And God saw the light, and it was good (p<.02).
"And a Judeo-Christian perspective on the use of statistics" (www.stat.columbia.edu)