Are they straight off of the scanner or did you anonymize them? Can you 
send me one of the dicom files?
doug

On 11/09/2012 11:39 AM, Yangmei LUO wrote:
>
> Hi there,
>
>
> I am a newbie and I used data collected from SIEMENS 3T to practice. 
> It works well when I tried to preprocess structural data using 
> freesurfer. However, there is a problem when I tried to convert the 
> functional data in DICOM into NII using freesurfer. The problem I can 
> not solve, so I turn to you. Could you give me some advice on how to 
> solve this problem?  Any help is appreciated!
>
> The command I run:
> / export FREESURFER_HOME=/usr/local/freesurfer
>  /usr/local/freesurfer/bin/mri_convert --in_type dicom --out_type nii 
> I0001.dcm s105.run1.nii/
>
> and the result in terminal is
> //usr/local/freesurfer/bin/mri_convert --in_type dicom --out_type nii 
> I0001.dcm ..nii
> $Id: mri_convert.c,v 1.179.2.2 2011/05/16 20:53:47 greve Exp $
> reading from I0001.dcm...
> Starting DICOMRead2()
> dcmfile = /home/fsl/data/emotion/s105/run1/I0001.dcm
> dcmdir = /home/fsl/data/emotion/s105/run1
> Ref Series No = 3
> Found 231 files, checking for dicoms
> Found 228 dicom files in series.
> First Sorting
> Computing Slice Direction
> Vs: 0 0 0
> Vs: -nan -nan -nan
> Second Sorting
> Counting frames
> nframes = 228
> nslices = 1
> ndcmfiles = 228
> PE Dir = COL (dicom read)
> TransferSyntaxUID: --1.2.840.10008.1.2--
> jpegUID:           --1.2.840.10008.1.2.4--
> Loading pixel data
> TR=2000.00, TE=30.00, TI=0.00, flip angle=90.00
> i_ras = (-1, -0, 0)
> j_ras = (-0, -0.999945, 0.0104718)
> k_ras = (nan, nan, -nan)
> Reslicing using trilinear interpolation
> MRIresample(): error inverting matrix; determinant is -nan, matrix is:
> -3.000  -0.000   nan   nan;
> -0.000  -3.000   nan   nan;
>  0.000   0.031  -nan  -nan;
>  0.000   0.000   0.000   1.000;/
>
>
>
> Thank you very much!
>
> Best wishes,
>
> Yangmei
>
>
>
> _______________________________________________
> Freesurfer mailing list
> Freesurfer@nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html

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