A study of the radiation cataract as late effects of radiation therapy.

概要

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In a review of 61 patients irradiated their eye balls in the Department of Radiology, Fukuoka University, from 1973 to 1997, radiation cataract as late effect occurred in 17 patients (27.9%), in 25 eye balls (22.1%).The periods from radiation to appear the cataract were correlated closely with total radiation dose to the lens.The radiation cataract developed earlier on cases irradiation with large total dose than with small total dose.According to the fraction size, the radiation cataract rates were higher in the patients irradiated over 1.5Gy than the patients irradiated under 1.5Gy, with significant difference.Five percent radiation cataract dose after 5 year was TDF 13 (95% confidence limits 11-14), 50% dose was 21 (19-23), and 95% dose was 35 (31-39).
日本頭頸部癌学会の論文