3D Slicer Users Group Meeting

AAPM/COMP

Vancouver, August 2, 2011

Nadya ShusharinaDepartment of Radiation OncologyMassachusetts General Hospital

Interactive deformable registration with landmarks

Radial Basis Functions

- TPS (global support)

- Wendland (local support)

- Gaussian (global support with variable kernel width, allowed for local regularization)

Areas of application

• local details of the image, primarily the details of low contrast

• anatomic changes – tumor shrinking– weight loss

• gross body movement– breathing– position variation

• substantial volume change– full vs empty bladder or rectum

Misalignment caused by anatomic changes

Misalignment caused by position variation

Misalignment caused by position variation

Misalignment caused by the rectum enlargement

To learn more

http://www.slicer.org/slicerWiki/index.php/Modules:PlastimatchLANDWARP