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.

中文翻译：

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芬兰过去 10 年中 X 射线和核医学检查对人群的当代综合有效剂量的变化。

估计了 2018 年芬兰 X 射线和核医学检查对人群造成的当代集体有效剂量。从 2008 年到 2018 年，x 射线检查的估计人均有效剂量分别从 0.45 毫希增加到 0.72 毫希，核医学检查从 0.03 毫希增加到 0.04 毫希。CT检查占所有X线检查总集体有效剂量的比例剂量从2008年的58%增加到2018年的70%，应用新的换算系数后，剂量总量没有实质性变化。传统平片的集体有效剂量在过去十年中没有显着变化，而新的（ICRP 103）组织加权因子于 2018 年投入使用，但总体检查频率有所下降。