Hello,
this is probably straightforward but after reading through many posts I haven’t been able to figure out how to do it.
I am segmenting portions of some vessels on CT angiographies and I want to use “grow from seeds”. I am interested only in specific parts of the vessels (e.g. let’s say a small clot, even if it’s not what I’m doing), so to prevent the tool from growing the seed in the whole vessel I’d like to be able to place a ROI around the part I’m interested in and make the segment grow only within the ROI boundaries. I can’t figure out how to do this.
I know I could crop the volume, but I don’t want to do that because 1) I have multiple vascular segments to mark throughout the brain 2) I’m looking at tiny parts and without the surrounding I easily lose track of where I am.
Thanks for any help,
Marta