An on-line adaptive radiation therapy system for intensity modulated radiation therapy: An application of multi-objective optimization

Published

Journal Article

Radiation therapy (RT) is a non-invasive and highly ekective treatment option for Prostate cancer. The goal is to deliver the prescription dose to the tumor (prostate) while minimizing the damages to the surrounding healthy organs namely bladder, rectum, and femoral heads. One major drawback of the conventional RT is that organ positions and shapes vary from day to day and that the original plan that is based on pre-treatment CT images may no longer be appropriate for treatment in subsequent sessions. The usual remedy is to include some margins surrounding the target when planning the treatment. Though this image guided radiation therapy technique allows in-room correction and can eliminate patient setup errors, the uncertainty due to organ deformation still remains. Performing a plan re-optimization will take about 30 minutes which makes it impractical to perform an online correction. In this paper, we develop an Adaptive Radiation Therapy (ART) system for online adaptive IMRT planning to compensate for the internal motion during the course of the prostate cancer treatment. It allows the treatment plan to be quickly modified based on the anatomy-of-the-day.

Duke Authors

Cited Authors

  • Thongphiew, D; Chankong, V; Yin, FF; Wu, QJ

Published Date

  • November 28, 2008

Published In

Volume / Issue

  • 4 / 3

Start / End Page

  • 453 - 475

Electronic International Standard Serial Number (EISSN)

  • 1553-166X

International Standard Serial Number (ISSN)

  • 1547-5816

Citation Source

  • Scopus