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<TITLE>b-matrix from dicom header and from techs</TITLE>
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<P><FONT SIZE=2>Dear All,<BR>
<BR>
we collect our data from Siemens scanner. I got b-matrix from our MR techs for software version VA25A b matrix is as follows<BR>
<BR>
0: 0.000, 0.000, 0.000<BR>
1: 1.000, 0.000, 0.500<BR>
2: 0.000, 0.500, 1.000<BR>
3: 0.500, 1.000, 0.000<BR>
4: 1.000, 0.500, 0.000<BR>
5: 0.000, 1.000, 0.500<BR>
6: 0.500, 0.000, 1.000<BR>
7: 1.000, 0.000, -0.500<BR>
8: 0.000, -0.500, 1.000<BR>
9: -0.500, 1.000, 0.000<BR>
10: 1.000, -0.500, 0.000<BR>
11: 0.000, 1.000, -0.500<BR>
12: -0.500, 0.000, 1.000<BR>
<BR>
I used dcm2nii software (to convert hem into nifti file for soem other purpose i also gives me bvec and bval files) which gives me the following matrix from the dicom header file<BR>
<BR>
0 0 0<BR>
0.89 0 -0.45<BR>
0 0.45 -0.89<BR>
0.45 0.89 0<BR>
0.89 0.45 0<BR>
0 0.89 -0.45<BR>
0.45 0 -0.89<BR>
0.89 0 0.45<BR>
0 -0.45 -0.89<BR>
-0.45 0.89 0<BR>
0.89 -0.45 0<BR>
0 0.89 0.45<BR>
-0.45 0 -0.89<BR>
<BR>
Since not only the values are different but +/- signs are also different in DW directions. So I am wondering whether any one could tell me which is the correct table to go with.<BR>
<BR>
Thanks<BR>
<BR>
Venkat<BR>
<BR>
</FONT>
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