Help with "Grow From Seeds" command

Hi all.

Recently started to work with 3DSlicer and would like to know if it’s possibly for the community to help with some issue I’m having with the “Grow From Seeds” command.

I’m trying the a human heart segmentation using this command, but the end result is merely some small volumes for the different created segments. End result:


I’ve created 8 different segments, marked all of them, but when I initialize the “Grow From Seeds” command, all I get is what you see in the upper image.

What can be the cause for this and what other options do I have to do a heart segmentation?

Thank you in advance,

Click “Apply” in “Grow from seeds” effect once you are happy with the preview results.

Thank you so much, will try it out.