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Accession number;02A0263698
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| Title;Trial Production of Water Substitute Phantom Considering the Effect of Light. |
| Author;
FUJISAKI TATSUYA
(Ibarakiken'iryodai Hoken'iryo Hoshasengijutsukagakuka)
HIRAOKA TAKESHI
(National Inst. Radiological Sciences)
SAITO HIDETOSHI
(Tokyo Metropolitan Univ. Health Sci., JPN)
KIMURA MASAYA
(Kyotokagaku)
KUWABARA AKIO
(Cancer Inst. Hosp., Jpn. Found. for Cancer Res.)
MURAISHI HIROSHI
(Ibarakiken'iryodai Hoken'iryo Hoshasengijutsukagakuka)
ABE SHINJI
(Ibarakiken'iryodai Hoken'iryo Hoshasengijutsukagakuka)
NISHIMURA KATSUYUKI
(Ibarakiken'iryodai Hoken'iryo Hoshasengijutsukagakuka)
INADA TETSUO
(Ibarakiken'iryodai Hoken'iryo Hoshasengijutsukagakuka)
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Journal Title;Nippon Acta Radiologica
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Journal Code:S0239B
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ISSN:0048-0428
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VOL.62;NO.2;PAGE.86-91(2002)
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| Figure&Table&Reference;FIG.6, TBL.1, REF.19 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;We have produced a novel water substitute phantom suitable for film dosimetry, while retaining the radiological property of a conventional water substitute phantom. The novel phantom excludes the effect of light, which is known to affect the accuracy of results on conventional phantoms. The effect of light was eliminated by appropriately adjusting the quantum of the carbon black to that of a conventional phantom material. Through comparison of the novel phantom with a conventional phantom it was shown that the absorbed dose determined by conventional phantom was 15% higher for 10MV X-rays and 18% higher for an 18MeV electron beam, attributable to the contamination of Cerenkov light. Although the net optical density of the film increased with time owing to the optical permeability of the phantom, that of the novel phantom did not vary with time. The novel phantom was therefore shown to be unaffected by such local light and by the optical transmission of the phantom. (author abst.) |
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