Hi,

I know this two works from Lupita García-Gomar and Luis Concha:
http://www.scirp.org/journal/PaperInform...
https://link.springer.com/article/10.100...

They don't use a mask, but the ROI segmentation is based on Schaltenbrand-Wahren atlas.
Hope you find it useful.
Zeus.

PS: btw, greetings Lupita, I know you are in the forum :)