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Improving radiochromic film's sensitivity by wrapping it with UV phosphor


, : Improving radiochromic film's sensitivity by wrapping it with UV phosphor. Medical Physics 31(5): 1014-1016

The main advantage of radiochromic-film dosimeters is the coupling of rapid full planar-acquisition, high-spatial resolution and dose linearity. Their main limitation, however, is their low radiation sensitivity. This precludes their application to measuring doses below a few Gy. Radiochromic films are sensitive to ultraviolet radiation. In this note the results of exposing radiochromic films to x rays through an UV imaging cassette, which converts and amplifies x rays to UV radiation, are presented. These results indicate a clear increase (around 50%) in radiochromic film's sensitivity to MV x rays (6, 10, and 18 MV) when exposed through the UV phosphor.

US$19.90

PMID: 15191286

DOI: 10.1118/1.1689012


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