Planning method and apparatus for radiation dosimetry

  • US 6,393,096 B1
  • Filed: 05/27/1999
  • Issued: 05/21/2002
  • Est. Priority Date: 05/27/1998
  • Status: Expired due to Term
First Claim
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1. A method of determining an optimized radiation beam arrangement for applying radiation to a tumor target volume while minimizing radiation of a structure volume in a patient, comprising the steps of:

  • using a computer to computationally obtain a proposed radiation beam arrangement;

    using a computer to computationally change the proposed radiation beam arrangement iteratively, incorporating a cost function at each iteration to approach correspondence of a CDVH associated with the proposed radiation beam arrangement to a CDVH associated with a predetermined desired dose prescription;

    comparing the dose distribution to a prescribed dose for the tumor volume and surrounding tissue structures, and increasing or decreasing radiation beam intensity if the change of the proposed beam arrangement leads to a greater correspondence to the desired dose prescription to obtain an optimized radiation beam arrangement.

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