I have faced this problem before. Philips scanner's default output format is the PAR/REC format - but it also outputs in Dicom format. What I believe is the problem is that the images are oriented wrongly. Take a look at this in MRICRO and see how the images are oriented. You may need to reorient the images to be acceptable to FS.

On Tue, Mar 15, 2011 at 4:01 PM, leonardo kay <leonardo.kay@gmail.com> wrote:

Hi All

I'm new in freesurfer. I have a question regards Philips DICOM format. I tried to convert from dicom to .mgz
using mri_convert but i get the following error message:

MRIresample(): error inverting matrix; determinant is nan, matrix is:

-0.000 -0.000   nan   nan;
0.000   0.000   nan   nan;
0.000 -0.000   nan   nan;
0.000   0.000   0.000   1.000;

Have anyone experienced this before?
Any help converting from philips dicom format?

Best regards
Leo.

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