Stability of electron-beam energy monitor for quality assurance of the electron-beam energy from radiotherapy accelerators

Koichi Chida, Haruo Saito, Yoshihiro Takai, Masayuki Zuguchi, Masatoshi Mitsuya, Hideharu Sakakida, Masahiro Kohzuki, Shogo Yamada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Information on electron energy is important in planning radiation therapy using electrons. The Geske 3405 electron beam energy monitor (Geske monitor, PTW Nuclear Associates, Carle Place, NY, USA) is a device containing nine ionization chambers for checking the energy of the electron beams produced by radiotherapy accelerators. We wondered whether this might increase the likelihood of ionization chamber trouble. In spite of the importance of the stability of such a quality assurance (QA) device, there are no reports on the stability of values measured with a Geske monitor. The purpose of this paper was therefore to describe the stability of a Geske monitor. It was found that the largest coefficient of variation (CV) of the Geske monitor measurements was approximately 0.96% over a 21-week period. In conclusion, the stability of Geske monitor measurements of the energy of electron beams from a linear accelerator was excellent.

Original languageEnglish
Pages (from-to)197-201
Number of pages5
JournalTohoku Journal of Experimental Medicine
Volume198
Issue number3
DOIs
Publication statusPublished - 2002 Nov 1

Keywords

  • Electron beam energy monitoring
  • Electron therapy
  • Quality assurance
  • Radiation therapy

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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