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Review of surface dose detectors in radiotherapy

Published online by Cambridge University Press:  20 November 2006

E. O'Shea  and
P. McCavana
E. O'Shea
Affiliation:
Clinical Trials Unit, St. Luke's Hospital, Dublin, Ireland
P. McCavana
Affiliation:
Medical Physics Department, St. Luke's Hospital, Dublin, Ireland
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Abstract

Several instruments have been used to measure absorbed radiation dose under non-electronic equilibrium conditions, such as in the build-up region or near the interface between two different media, including the surface. Many of these detectors are discussed in this paper. A common method of measuring the absorbed dose distribution and electron contamination in the build-up region of high-energy beams for radiation therapy is by means of parallel-plate ionisation chambers. Thermoluminescent dosimeters (TLDs), diodes and radiographic film have also been used to obtain surface dose measurements. The diamond detector was used recently by the author in an investigation on the effects of beam-modifying devices on skin dose and it is also described in this report.

Keywords

Surface dosimetrybuild-up dosimetrydetectorsionisation chamberdiamond detector
Type
Original Article
Information
Journal of Radiotherapy in Practice , Volume 3 , Issue 2 , March 2003 , pp. 69 - 76
Copyright
2003 Cambridge University Press

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