Hi,
Like a few others on the list I've had problems with FAST v4.1 leaving
holes in the segmentation ie. classifying parenchyma as CSF.
http://i.imgur.com/7KLqh.png
Looking at the data (see above link for examples), it seems like this
might be related to white matter hypointensities that are not disease
related, and is present at the mixeltype stage.
I've tried varying f, H, R, capital i and lower case L and N, but I've
had little success.
My best attempts have been lowering the bias field smoothing kernel to
a FWHM of 4, but this still leaves/creates many small holes, and it
drastically changes the results of the GM segmenation.
Any tips on what flags I should vary and in what direction (ie.
bigger/smaller than the default) to help this?
thanks,
mishkin
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