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It looks like you are missing the b0 image.  Amend your bvecs to be:

{0.0 1.0 0.446 0.447 0.448 0.447 -0.449
0.0 0.0 0.895 0.275 -0.723 -0.724 -0.277
0.0 0.0 0.0 0.851 -0.525 0.526 0.850}-bvecs

And your bvals to be: 

{0 500 500 500 500 500 500}-bvals

Peace,

Matt.

-----Original Message-----
From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf
Of Mi Jung Kim
Sent: Monday, March 09, 2009 6:43 PM
To: [log in to unmask]
Subject: [FSL] capillary phantom for muscle dti

Hi All,

I am trying to use probabilistic tractograph with my phantom data. I have
problem with running 'dtifit'. Below are my bvecs and bvals.
{1.0 0.446 0.447 0.448 0.447 -0.449
0.0 0.895 0.275 -0.723 -0.724 -0.277
0.0 0.0 0.851 -0.525 0.526 0.850}-bvecs
{500 500 500 500 500 500]-bvals

But I see some error message so that I suspect that my vectors and values
are not matched with my dwi images. My images actually scaled images from
dicom.Would it be a problem?

Is there anybody who can help me?

Thanks,

Mi Jung