Hello!

I'm encountering a problem with converting fMRI-Data from dicom- to NIfTI-files (single file). The problem only occurs with data aquired on Siemens Vision, data from Siemens Trio work just fine. The "Siemens ASCII header" is missing (files have not been anonymized) and every dicom-file has its own series number. This is true for all functional data (10 subjects, one run each). Other programs can't convert these dicom-files either  (dcm2nii, NIfTI-1 converter for BVQX). Do you know if there is a possible solution for this problem?

In more detail, when running mri_convert, the following happens:

...
Getting Series No
Scanning Directory
INFO: Found 218 files in ../run
INFO: Scanning for Series Number 67
INFO: found 1 files in series
INFO: loading series header info.

INFO: sorting.
RunNo = 66

WARNING: file ../MR.9500.260 does not contain a Siemens ASCII header
has this file been anonymized?
Proceeding as best as I can ...

INFO: (512 512   1), nframes = 1, ismosaic=0
PE Dir COL COL
FileName                ../MR.9500.260
Identification
        NumarisVer        VB33D
        ScannerModel      MAGNETOM VISION
        PatientName       deleted, shows correctly
Date and time
        StudyDate         deleted, shows correctly
        StudyTime         150948.046000
        SeriesTime        153015.877000
        AcqTime           153606.293000
Acquisition parameters
        PulseSeq          ep_fid
        Protocol          unknown
        PhEncDir          COL
        EchoNo            1
        FlipAngle         90
        EchoTime          60
        InversionTime     -1
        RepetitionTime    60
        PhEncFOV          0
        ReadoutFOV        0
Image information
        RunNo             66
        SeriesNo          67
        ImageNo           260
        NImageRows        512
        NImageCols        512
        NFrames           1
        SliceArraylSize   0
        IsMosaic          0
        ImgPos             96.0000  80.1658  98.1990
        VolRes              0.3750   0.3750   3.0000
        VolDim            512      512        1
        Vc                 -1.0000   0.0000  -0.0000
        Vr                 -0.0000  -0.9848  -0.1736
        Vs                    -nan     -nan     -nan
        VolCenter             -nan     -nan     -nan
        TransferSyntaxUID unknown
INFO: no Siemens slice order reversal detected (good!).
TR=60.00, TE=60.00, TI=-1.00, flip angle=90.00
i_ras = (-1, 0, -0)
j_ras = (-0, -0.984808, -0.173648)
k_ras = (-nan, -nan, -nan)
Reslicing using trilinear interpolation
MRIresample(): error inverting matrix; determinant is -nan, matrix is:
-0.375  -0.000  -nan  -nan;
 0.000  -0.369  -nan  -nan;
-0.000  -0.065  -nan  -nan;
 0.000   0.000   0.000   1.000;

If there's any help, I'm glad to hear it. And if the answer is "no, the data is gone forever", this would be a helpful response, too.

Philipp