Hello
I’ve follow all instruction found here 3D Cropping Volume Rendering
If i’ve correctly understood, there is not a live crop direct on the main volume.
Then, i’ve make a segmentation - > exported to labelmap
then Open Mask scalar volume
Input MrBrainTumor (original volume)
Mask Volume: Segmentation label 1
Apply, the is ok
Now I go to volume rendering, I can display the main volume or the masked volume , but I see only a solid colored form (the mask selection) but not the tissue volume whit the volume rendering setting
Note that in recent version of Slicer, the workflow is much simpler than described in the old post, as Mask Volume effect allows masking directly from a segment, without leaving the Segment Editor module. Mask Volume will show up in the Segment Editor module after installing SegmentEditorExtraEffects extension.
I don’t really understand what you mean by using separated masks. You can use all the tools in Segment Editor to draw shapes - they don’t have to be connected. You can also combine or separate a segments using Logical operators effect; or mask sequentially by using the same volume as Input volume and Output volume in Mask volume effect.
Other little question, how to center the rotation center of 3D view on a specific point of 3D Volume: if I zoom very much, during rotation the volume go out of the window space
Click on the small box button (reset field of view) in the title bar of the 3D view to reset the center of rotation for the current content. I think Shift+LeftMouseDrag also shifts the center of rotation.