来自芬兰的 X 射线和核医学检查的当代集体有效剂量对人群的影响——过去 10 年的变化。

CONTEMPORARY COLLECTIVE EFFECTIVE DOSE TO THE POPULATION FROM X-RAY AND NUCLEAR MEDICINE EXAMINATIONS-CHANGES OVER LAST 10 YEARS IN FINLAND.

机构信息

Radiation and Nuclear Safety Authority (STUK), PL 14, 00811 Helsinki, Finland.

出版信息

Radiat Prot Dosimetry. 2020 Jul 17;189(3):318-322. doi: 10.1093/rpd/ncaa045.

Abstract

Contemporary collective effective doses to the population from x-ray and nuclear medicine examinations in Finland in 2018 was estimated. The estimated effective dose per caput from x-ray examinations increased from year 2008 to 2018 respectively from 0.45 mSv to 0.72 mSv and from nuclear medicine examinations from 0.03 mSv to 0.04 mSv. The proportional dose due to CT examinations of the total collective effective dose from all x-ray examinations increased from 58% in 2008 to 70% in 2018 and the dose did not change substantially in total when new conversion factors were applied. The collective effective dose from conventional plain radiography did not change substantially during the last ten years while the new (ICRP 103) tissue weighting factors were taken into use in 2018, however frequencies of examinations in total decreased. The collective effective dose from CT in nuclear medicine tripled between 2009 and 2018.

摘要

对 2018 年芬兰 X 射线和核医学检查的人群集体有效剂量进行了评估。从 2008 年到 2018 年，X 射线检查的人均有效剂量分别从 0.45 毫希增加到 0.72 毫希，核医学检查的人均有效剂量从 0.03 毫希增加到 0.04 毫希。在所有 X 射线检查的总集体有效剂量中，由于 CT 检查而导致的比例剂量从 2008 年的 58%增加到 2018 年的 70%，当使用新的转换因子时，总剂量没有实质性变化。在过去十年中，常规普通 X 射线摄影的集体有效剂量没有发生实质性变化，而在 2018 年采用了新的（ICRP 103）组织权重因子，但总的检查频率有所下降。在 2009 年至 2018 年期间，核医学 CT 的集体有效剂量增加了两倍。