Beam characteristics of upper and lower physical wedge systems of Varian accelerators

Chee Wai Cheng, Walter L. Tang, Indra J. Das

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The beam characteristics of a dual physical wedge system, upper and lower, for Varian accelerators are studied over the energy range 6-18 MV. Wedge factors for both systems are measured in a water phantom as a function of field size, depth and source-to-wedge (SWD) distance. Our results indicate that apart from their physical differences, dosimetrically, the two wedge systems have max, resulting in nearly 44% reduction in water phantom scanning and 80% reduction in point measurements during commissioning.

Original languageEnglish (US)
Pages (from-to)3667-3683
Number of pages17
JournalPhysics in Medicine and Biology
Volume48
Issue number22
DOIs
StatePublished - Nov 21 2003
Externally publishedYes

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wedges
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water
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energy

ASJC Scopus subject areas

  • Biomedical Engineering
  • Physics and Astronomy (miscellaneous)
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Beam characteristics of upper and lower physical wedge systems of Varian accelerators. / Cheng, Chee Wai; Tang, Walter L.; Das, Indra J.

In: Physics in Medicine and Biology, Vol. 48, No. 22, 21.11.2003, p. 3667-3683.

Research output: Contribution to journalArticle

Cheng, Chee Wai ; Tang, Walter L. ; Das, Indra J. / Beam characteristics of upper and lower physical wedge systems of Varian accelerators. In: Physics in Medicine and Biology. 2003 ; Vol. 48, No. 22. pp. 3667-3683.
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