Fluorescent screen for high-dose-rate (HDR) brachytherapy quality assurance

Journal Article · Fri Sep 30 00:00:00 EDT 2005 · Medical Dosimetry

DOI:https://doi.org/10.1016/j.meddos.2005.04.001· OSTI ID:20696218

Lightstone, A W ^[1]

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1. Division of Medical Physics, Toronto-Sunnybrook Regional Cancer Centre, Toronto, Ontario (Canada)

This article describes apparatus for quickly checking the positioning and dwell times of a high-dose-rate (HDR) afterloader as part of daily quality assurance (QA). A groove was milled into an aluminum plate to align an HDR applicator, and fluorescent screens were placed on either side of the groove. Lines were drawn at the fluorescent screen corresponding to distances to which the radioactive source should travel in our daily QA treatment protocol. By dimming the room lights, the fluorescence from the source was seen with a closed-circuit video camera, and the positioning accuracy and dwell time of the source could be efficiently verified. Not only is this an excellent QA tool, but it also provides good training for radiation therapists and other HDR professionals.

• OSTI ID: 20696218
• Journal Information: Medical Dosimetry, Vol. 30, Issue 3; Other Information: DOI: 10.1016/j.meddos.2005.04.001; PII: S0958-3947(05)00097-X; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0958-3947
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
ACCURACY
BEAM POSITION
BRACHYTHERAPY
DOSE RATES
FLUORESCENCE
IRIDIUM
QUALITY ASSURANCE
RADIATION SOURCES
TELEVISION CAMERAS
TRAINING