Hi Leo:

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.

hope this helps!

Alan

On Tue, Mar 15, 2011 at 4:01 PM, leonardo kay leonardo.kay@gmail.comwrote:

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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