Hello,
   I have processed our lab's DTI data using a standard FSL pipeline (eddy_correct, bet, dtifit) and through an extensive ENIGMA pipeline (eddy_correct, bet, bvec rotation, dtifit, epi-correction with processed T1 image, and second DTIFIT).  I have been able to successfully run bedpostx on the data processed using the standard FSL pipeline.  However, when I attempt to run bedpostx on the data from the ENIGMA pipeline, I get the following error below. I have attached the output file from fslerrorreport to this email.  I have run bedpostx_datacheck and I do not get any errors (see below).  I have compared the output of bedpostx_datacheck between the standard FSL data that does successfully complete bedpostx and the other data that does not complete bedpostx without error (below).  The only noticeable differences are the dimensions and the number of lines in the bvec file.  However, both datachecks come back without error.  Any suggestions would be greatly appreciated.
ERROR MESSAGE WHEN RUNNING BEDPOSTX:
An exception has been thrown
Logic error:- detected by Newmat: index error: requested indices = 1, 1

MatrixType = Rect   # Rows = 65; # Cols = 0


BEDPOSTX_DATACHECK FOR DATA PROCESSED USING ENIGMA PIPELINE
fsl5.0-bedpostx_datacheck Data/
Data//data
data_type      INT16
dim1           110
dim2           110
dim3           110
dim4           65
datatype       4
pixdim1        2.000000
pixdim2        2.000000
pixdim3        2.000000
pixdim4        1.000000
cal_max        0.0000
cal_min        0.0000
file_type      NIFTI-1+

Data//nodif_brain_mask
data_type      FLOAT32
dim1           110
dim2           110
dim3           110
dim4           1
datatype       16
pixdim1        2.000000
pixdim2        2.000000
pixdim3        2.000000
pixdim4        1.000000
cal_max        0.0000
cal_min        0.0000
file_type      NIFTI-1+

 num lines in Data//bvals
1
 num words in Data//bvals
65
 num lines in Data//bvecs
65
 num words in Data//bvecs
195

BEDPOSTX_DATACHECK FOR DATA PROCESSED USING FSL PIPELINE
 fsl5.0-bedpostx_datacheck Data
Data/data
data_type      INT16
dim1           96
dim2           96
dim3           60
dim4           65
datatype       4
pixdim1        1.979167
pixdim2        1.979167
pixdim3        2.000000
pixdim4        1.000000
cal_max        0.0000
cal_min        0.0000
file_type      NIFTI-1+

Data/nodif_brain_mask
data_type      FLOAT32
dim1           96
dim2           96
dim3           60
dim4           1
datatype       16
pixdim1        1.979167
pixdim2        1.979167
pixdim3        2.000000
pixdim4        1.000000
cal_max        0.0000
cal_min        0.0000
file_type      NIFTI-1+

 num lines in Data/bvals
1
 num words in Data/bvals
65
 num lines in Data/bvecs
3
 num words in Data/bvecs
195

Thank you,
Taylor

Taylor P. Kuhn, Ph.D.
Neuropsychology Postdoctoral Fellow
UCLA Semel Institute for Neuroscience and Human Behavior
[log in to unmask]


IMPORTANT WARNING: This email (and any attachments) is only intended for the use of the person or entity to which it is addressed, and may contain information that is privileged and confidential. You, the recipient, are obligated to maintain it in a safe, secure and confidential manner. Unauthorized redisclosure or failure to maintain confidentiality may subject you to federal and state penalties. If you are not the intended recipient, please immediately notify us by return email, and delete this message from your computer.