Optimization of Breast Cancer Treatment by Dynamic Intensity Modulated Electron Radiotherapy
Abstract
Since electron arc dose calculations using Monte Carlo are quite time-consuming, we have investigated "gross optimization" techniques that will allow determination of a set of starting parameters that can converge to final values within a few iterations. This will allow us to determine the final optimized leaf settings for each arc segment within a reasonable time. Included in this "gross optimization" will be use of precalculated fluence maps reflective of the treatment head geometry, so that the initial parameter set can be determined using Monte Carlo calculations only within the individual patient anatomy. These techniques will make determination of the final leaf settings very straightforward. Additionally, beam data sets have been verified for the clinical range of field sizes and energies. Lastly, we are working with Varian Medical Systems to determine a transition path from our one-of-a-kind electron arc configuration into a supportable system that can be readily available to the general radiotherapy community.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2004
- Accession Number
- ADA431743
Entities
People
- Dennis D. Leavitt
Organizations
- University of Utah