sure. Let me know how it goes Bruce On Wed, 12 May 2010, Laluz, Victor wrote:
Thank you for the prompt answer, as always Bruce!!
I would be very interested in the techniques for multispectral measurement of hyperintensities, as we have a pretty sizeable database of T1 images with corresponding T2 flairs for which we are very interested in accurate measures of white matter changes.
Thank you for directing me to Koen Van Leemput. Take care,
-Victor
-----Original Message----- From: Bruce Fischl [mailto:fischl@nmr.mgh.harvard.edu] Sent: Wednesday, May 12, 2010 5:06 PM To: Laluz, Victor Cc: Nick Schmansky; freesurfer@nmr.mgh.harvard.edu; Koen Van Leemput Subject: Re: Methods for white matter hypointensities measure
Hi Victor
we treat it as any other label - it's manually labeled in the training subjects and propagated into the aseg. Koen Van Leemput (ccd) has some tools for segmenting them from multi-spectral data that probably works better though (they aren't that well defined only on a T1).
cheers Bruce
On Wed, 12 May 2010, Laluz, Victor wrote:
Hello guys,
I am curious as to how white matter hypointensities (on T1 mprage) are measured automatically for the aseg.stats file in FS? A group at UCSF is interested in using this measure for a study and would like to have a nice explanation or citation to describe how it is generated.
I have looked through what I think the likely citations would be on the Freesurfer techniques article listing and came up empty.
Thanks!
Victor
Victor Laluz : Imaging Coordinator : UCSF Memory and Aging Center
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