Niklason L T, Marx M V, Chan H P
Massachusetts General Hospital, Boston.
Health Phys. 1994 Dec;67(6):611-5. doi: 10.1097/00004032-199412000-00003.
Annual effective dose limits have been proposed by national and international radiation protection committees. Radiation protection agencies must decide upon a method of converting the radiation dose measured from dosimeters to an estimate of effective dose. A proposed method for the estimation of effective dose from the radiation dose to two dosimeters is presented. Correction factors are applied to an over-apron collar dose and an under-apron dose to estimate the effective dose. Correction factors are suggested for two cases, both with and without a thyroid shield. Effective dose may be estimated by the under-apron dose plus 6% of the over-collar dose if a thyroid shield is not worn or plus 2% of the over-collar dose if a thyroid shield is worn. This method provides a reasonable estimate of effective dose that is independent of lead apron thickness and accounts for the use of a thyroid shield.
国家和国际辐射防护委员会已经提出了年度有效剂量限值。辐射防护机构必须决定一种将剂量计测量的辐射剂量转换为有效剂量估计值的方法。本文提出了一种根据两个剂量计的辐射剂量估计有效剂量的方法。校正因子应用于围裙外领口剂量和围裙内剂量以估计有效剂量。针对有无甲状腺防护两种情况给出了校正因子建议。如果未佩戴甲状腺防护装置，有效剂量可通过围裙内剂量加上领口剂量的6%来估计；如果佩戴了甲状腺防护装置，则加上领口剂量的2%。该方法提供了一个合理的有效剂量估计值，该估计值与铅围裙厚度无关，并考虑了甲状腺防护装置的使用情况。
