Hi there,
Has anyone attempted this? We have the information from the image header for the MRS:
VOIPositionSag: -25.785037
VOIPositionCor: -70.432020
VOIPositionTra: 45.139218
VOINormalSag: -0.000021
VOINormalCor: 0.000378
VOINormalTra: 1.000000
VOIThickness: 15.000000
VOIRotationInPlane: 0.022435
as well as these:
PositionVector[0]: -18.455171
PositionVector[1]: -78.098378
PositionVector[2]: 45.142268
RowVector[0]: -0.999748
RowVector[1]: 0.022433
RowVector[2]: -0.000029
ColumnVector[0]: 0.022433
ColumnVector[1]: 0.999748
ColumnVector[2]: -0.000378
We want to use these to create a mask in MNI space to use in VBM analysis. This way we can take account of the VBM within each subjects MRS voxel.
The coordinates above are not in MNI space, but Siemens have no information about what the numbers a relative to, or how to convert them to MNI space.
Any help or pointers would be appreciated!
Phil
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