Dear FSL list
(Ifm sorry to send a garbled e-mail. I send you an e-mail again.)
I am attempting segmentation of brains of infant chimpanzees using FAST. I
succeeded to segment gray and white matter regions in the older subjects.
However, the white matter regions seemed to be overestimated while the
gray matter regions seemed to be underestimated in younger infants under
one year old. I would like to ask you to give me any suggestion that I
should try. I would also like to learn the method to segment the
unmyelinated white, and myelinated white matter regions using FAST?
The brains of infant chimpanzees were scanned under T1 weighted, and the
data were processed as follows.
(1) Scans were corrected for fluctuations in average intensity using SUSAN.
(2) Brains were aligned to anterior commisure]posterior commisure
orientation in transverse view using MRIcro.
(3) Cerebral portions of brains were extracted using BET (option: -R -m -
s -r 50 -f 0.3 -g 0.2) and FSLview.
(4) Gray and white matter regions were segmented using FAST (option: -t 1 -
c 3 -a -A -od, -os -ob -i 16 -l 200 -v 1- 5).
I appreciate for your help in advance.
Tomoko Sakai
Primate Research Institute
Kyoto University
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Tomoko Sakai
Primate Research Institute, Kyoto University
Brain Research SectionEDepartment of Behavioral and Brain Sciences
Inuyama, Aichi 484-8506, JAPAN
TEL. +81-568-63-0567 (Administrative Office)
FAX. +81-568-63-0085
E-mail: [log in to unmask]
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