New "Surface cut" and "Mask volume" tools for 3D Slicer segment editor

Two new effects have been added to 3D Slicer application's Segment editor module.

Mask volume: Blanks out a segment or surrounding area in a volumetric image. Useful for quick removal of unwanted objects (such as CT table) or showing only a selected organ. It can also be used for creating a binary mask for registration, bias correction, etc. This effect essentially makes "Mask scalar volume" module functionality available conveniently in Segment editor.

Surface cut: Creates a surface from a set of points placed at the boundary of a structure in multiple views. The surface then can be used to create a segment or added or removed from an existing segment. The surface can be edited in slice and 3D views in real-time. Useful for quick approximate segmentation of structures with mostly convex shape. This effect essentially makes "Markups to model" module functionality available conveniently in Segment editor.

Used software: 3D Slicer 4.7.0-2017-07-15 + SegmentEditorExtraEffects extension.
Download: http://www.slicer.org

Mask Volume and Surface Cut effects were developed by Kyle Macneil (Med-i Lab, Queen's University; SPL, Brigham and Women's Hospital), with help from Andras Lasso and Andrey Fedorov.