I am attempting to do a segmentation starting from 2 channels, a proton
density weighted and a T2 weighted image, but I get too much grey matter in
places where white matter should be. Steve, I am now working from the same
images I sent you recently. I was able to extract the brain, and after noise
reduction the images look much better. Also, registration of either image to
a T1 weighted image acquired on a 3T scanner (rather than 1.5), does not
work well at all, when T1 weighted images from 1.5 register fine. Which
parameters should I play with in the advanced options for registration to
have this work? Any suggestions? Stefano
Stefano Marenco, M.D.
Senior Staff Fellow, NIMH, CBDB
Bldg 10 room 4S235
9000 Rockville PIke
Bethesda, MD 20892
email: [log in to unmask]
tel: (301) 435-8964
fax: (301) 4807795
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