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2008, Volume 4, Issue 3: 453-475. Doi: 10.3934/jimo.2008.4.453
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An on-line adaptive radiation therapy system for intensity modulated radiation therapy: An application of multi-objective optimization

  • 1.

    Dept Elect. Engin. & Computer Science, Case Western Reserve University, Cleveland, OH

  • 2.

    Department of Radiation Oncology, Duke University Medical Center, Durham, NC

Received:  August 31, 2007
Revised:  April 30, 2008
Published:  June 2008
Abstract Related Papers Cited by
    Abstract
  • Radiation therapy (RT) is a non-invasive and highly effective 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.
    Mathematics Subject Classification: Primary: 58F15, 58F17; Secondary: 53C35.

    Citation:
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