Hi,
I intend to combine gray matter masks from 10 subjects which were obtained after segmentation (unmodulated normalized GM image "wc1xxx"). My questions are,
(1).
Should I (a) threshold/binarize iindividual image (i.e. using i1>0.2) first, and then combine all 10 images [(i1+i2+...+i10)/10] and binarized again (i1>0.99)? Or, (b) combine all 10 images [(i1+i2+...+i10)/10] first, and then threshold/binarize the image (i1>0.2) ?
(2).
Can I use i1>0.3 (or 0.4)?
Thanks a lot.
Mark
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