Dear all,
I would like to ask for advice on this question:
I have depicted a ROI over a T1w nifti file so the ROI is saved in a nifti file with a head copied from the original T1w volume.
I want to compute some statistics over other nifti volume (ADC volume) using that ROI. In order to project the ROI on that volume and compute the histograms I use a R script.
I use (qform_ADC)^-1 * qform_ROI as transformation matrix from the ijk space of the ROI to the ijk space of the ADC. Is this correct?
("*" means matrix product, "^-1" means matrix inverse)
I tried to label a slice of one ventricle and I look where this region is moved on the ADC, it does not match with that region on
the ADC after this operation.
Any help will be appreciated.
FĂ©lix.