Hello Freesurfers,

I am interested in obtaining the regional volumes of white matter hypointensities. 

What volume would I use a reference for obtaining the 'regions' ? and what commands would I need to use to obtain these regional volumes ? 

​If there isn't an appropriate white matter volume that can be used as a reference, then is there a way to divide a subject's brain image or white matter volume image into say 8 equal quadrants, which can then be used as masks to obtain regional WMH volume in these quadrants?

Thanks,

-Prad