Thermoluminescent dosimetry (TLD) for megavoltage electron beam energy determination

Authors

V. Nelson, University of Sydney
Donald McLean, University of Sydney
Lois C. HollowayFollow

RIS ID

33596

Publication Details

Nelson, V., McLean, D. & Holloway, L. C. (2010). Thermoluminescent dosimetry (TLD) for megavoltage electron beam energy determination. Radiation Measurements, 45 (3-6), 698-700.

Abstract

Megavoltage electron beams are used in many institutions for the treatment of superficial malignant diseases. Accurate dosimetry of electron beams is a fundamental requirement for patient safety. To ensure this, national and international regulatory bodies conduct electron dosimetry audits utilising thermoluminescent dosimeters such as LiF:Mg, Ti (TLD100). TLD100 has been shown to exhibit energy dependence which can introduce errors in dosimetry. In this study commercially available TL materials have been used for a practical method developed to ascertain electron beam energy. This method could be applied in these dosimetry audits to reduce inaccuracies due to energy dependence of TLD100.