Dear FreeSurfers,

I received FreeSurfer structural MRI brain data to analyze, but there are some questions about specific FreeSurfer variables that I could not find answered on your wiki or in the mail archive:

1.- “Non-White Matter hypointensities”:

1.a - Are these the same thing as “gray matter hyperintensities”? 

1.b - Are these scanned from the whole brain gray matter or only sub-cortical?  

1.c – Are these also considered traumatic markers? (literature would be appreciated)

2.- 5^th Ventricle:  is this variable encompassing the Cavum Septum Pellucidum only, or does it also include the Cavum Vergae?

3.- Are there published analysis about FreeSurfer accuracy for CSF volumes?  

Thanks and will look forward,

Ney

__________________________

Ney Alliey-Rodriguez, M.D.

Research Assistant Professor – Gershon Lab

Department of Psychiatry and Behavioral Neuroscience

University of Chicago

5841 S Maryland Ave Room M344 (MC3077)

Chicago, IL 60637

Phone: 1(773)702-0599