Ok, actually the error about the data and bvals/bvecs not having the same
size occured the first time you ran trac-all, but it seems to have been
fixed the second time you ran it, based on the log file.

I suspect the current problem is caused by poor registration. Have you
checked the aparc+aseg and/or the registration from diffusion to
anatomical and from anatomical to MNI?

On Fri, 16 Aug 2013, David Soto wrote:

> hi - yes it as 65 -output pasted below, cheers
>
> dsoto@wmen-dsoto3:~/Documents/fmri/rsdtianawmgui/14AB/dmri$ mri_info
> dwi.nii.gz Volume information for dwi.nii.gz
>          type: nii
>    dimensions: 96 x 96 x 46 x 65
>   voxel sizes: 2.3333, 2.3333, 2.2999
>          type: FLOAT (3)
>           fov: 224.000
>           dof: 0
>        xstart: -112.0, xend: 112.0
>        ystart: -112.0, yend: 112.0
>        zstart: -52.9, zend: 52.9
>            TR: 1000.00 msec, TE: 0.00 msec, TI: 0.00 msec, flip angle: 0.00
> degrees
>       nframes: 65
>       PhEncDir: UNKNOWN
> ras xform present
>    xform info: x_r =  -1.0000, y_r =   0.0000, z_r =   0.0000, c_r =
> 0.0000
>              : x_a =   0.0000, y_a =   0.9774, z_a =  -0.2112, c_a =
> 2.1015
>              : x_s =   0.0000, y_s =   0.2112, z_s =   0.9774, c_s =
> 19.9194
> Orientation   : LAS
> Primary Slice Direction: axial
>
> voxel to ras transform:
>               -2.3333   0.0000   0.0000   112.0000
>                0.0000   2.2807  -0.4858   -96.1994
>                0.0000   0.4928   2.2480   -55.4405
>                0.0000   0.0000   0.0000     1.0000
>
> voxel-to-ras determinant -12.5217
>
> ras to voxel transform:
>               -0.4286   0.0000   0.0000    48.0000
>               -0.0000   0.4189   0.0905    45.3166
>               -0.0000  -0.0918   0.4250    14.7274
>                0.0000   0.0000   0.0000     1.0000
>
> http://www1.imperial.ac.uk/medicine/people/d.soto/
> On 16/08/13 16:13, Anastasia Yendiki wrote:
>> mri_info dmri/dwi.nii.gz
>
>
>
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