Hi.
I'm using SIENAX for studying cortical atrophy in Alzheimer's disease.
After getting my preliminary data, I wonder something like these.
1. During the reveiw of results using FSL view, I found some segmentation
is incorrect. Some brain parenchyme is classified as CSF. How can I fix
it? I think -f option can be used for this purpose. Is it right? If so,
how can I find optimal threshold? Which anantomical structures should be
reviewed? Can different values of FOV, matrix, slice numbers cause this
problems?
2. How about different operating system? I analyzed my datas using both
Redhat linux 7.x and 9.0,separately. I found results of brain volumes were
not same. Is this natural? why did these results occured?
(Sequence of MRI data are like this: T1/T2/FOV/matrix=14.4/5.5/20-
21/256*256 or 256*192)
Best regards.
Jong Chul, Youn M.D.
Kunggi Provincial Hospital for the Elderly
Repulic of Korea.
e-mail: [log in to unmask]
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