Verification data for electron beam dose algorithms

Almon S. Shiu, Samuel Tung, Kenneth R. Hogstrom, James A. Purdy

Research output: Contribution to journalArticle

69 Scopus citations

Abstract

The Collaborative Working Group (CWG) of the National Cancer Institute (NCI) electron beam treatment planning contract has performed a set of 14 experiments that measured dose distributions for 28 unique beam-phantom configurations that simulated various patient anatomic structures and beam geometries. Multiple dose distributions were measured with film or diode detectors for each configuration, resulting in 78, 2-D planar dose distributions and one, 1-D depth-dose distribution. Measurements were made for 9- and 20-MeV electron beams, using primarily 6x6- and 15 X 15-cm applicators at several SSDs. Dose distributions were measured for shaped fields, irregular surfaces, and inhomogeneities (1-D, 2-D, and 3-D), which were designed to simulate many clinical electron treatments. The data were corrected for asymmetries, and normalized in an absolute manner. This set of measured data can be used for verification of electron beam dose algorithms and is available to others for that purpose.

Original languageEnglish
Pages (from-to)623-636
Number of pages14
JournalMedical physics
Volume19
Issue number3
DOIs
StatePublished - Jan 1 1992

Keywords

  • algorithm verification
  • distributions
  • electron beam dosimetry
  • inhomogeneities
  • irregular fields
  • measured dose
  • treatment planning

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