Meeting Banner
Abstract #4018

Subject-specific positional probability volume mapping for internal target volume determination in Radiotherapy

Oi Lei Wong1, Jing Yuan1, Darren MC Poon2, Yi Hang Zhou1, Siu Ki Yu1, and Kin Yin Cheung1
1Medical Physics and Research, Hong Kong Sanatorium, Hong Kong, Hong Kong, 2Comprehensive Oncology Center, Hong Kong Sanatorium, Hong Kong, Hong Kong

A novel ITV determination technique based on the volume of positional probability distribution (PPV) generated by volumetric 4DMRI was proposed and verified on cancer patients. For large targets, both PPV and 4D-CT generated ITV were similar with relatively large DSC. For small targets, however, relatively small DSC was observed, where poor tumor visibility in 4D-CT may be the cause.

This abstract and the presentation materials are available to members only; a login is required.

Join Here