Effects of read-out light sources and ambient light on radiochromic film
- 1 August 1998
- journal article
- research article
- Published by IOP Publishing in Physics in Medicine & Biology
- Vol. 43 (8) , 2407-2412
- https://doi.org/10.1088/0031-9155/43/8/031
Abstract
Both read-out light sources and ambient light sources can produce a marked effect on coloration of radiochromic film. Fluorescent, helium neon laser, light emitting diode (LED) and incandescent read-out light sources produce an equivalent dose coloration of 660 cGy h(-1), 4.3 cGy h(-1), 1.7 cGy h(-1) and 2.6 cGy h(-1) respectively. Direct sunlight, fluorescent light and incandescent ambient light produce an equivalent dose coloration of 30 cGy h(-1), 18 cGy h(-1) and 0 cGy h(-1) respectively. Continuously on, fluorescent light sources should not be used for film optical density evaluation and minimal exposure to any light source will increase the accuracy of results.Keywords
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