人体中镭的软组织剂量测定——I. 软组织中226镭和228镭衰变产生的α粒子剂量

Soft tissue dosimetry of radium in humans--I. Alpha-particle doses from the decay of 226Ra and 228Ra in soft tissues.

作者信息

Keane A T, Schlenker R A

出版信息

Health Phys. 1983;44 Suppl 1:81-9. doi: 10.1097/00004032-198306001-00006.

DOI:10.1097/00004032-198306001-00006

Abstract

Estimates are presented of the alpha particle doses accumulated by individual organs and soft tissues of Reference Man in a 50-yr period following single intakes of 226Ra and 228Ra. With no decay of 226 Ra daughter products in soft tissue, the median dose is 67 mrad per muCi 226Ra intake. With no translocation of 228Ra daughter products, the dose per muCi 228Ra intake is 5.77 times the corresponding value for 226Ra. Biological variability introduces substantial uncertainty when applying these estimates to a particular individual.

摘要

给出了参考人单次摄入226Ra和228Ra后50年内各器官和软组织累积的α粒子剂量估算值。若软组织中226Ra子体不发生衰变，每摄入1μCi 226Ra的中位剂量为67毫拉德。若228Ra子体不发生转移，每摄入1μCi 228Ra的剂量是226Ra相应值的5.77倍。将这些估算值应用于特定个体时，生物变异性会引入相当大的不确定性。