「高線量」については記事中の冒頭部分↓を訳出しただけのものですので
A quarter of all thyroid cancer cases among patients who were children at the time of the Chernobyl accident
32 years ago, are “probably” due to high doses of radiation received during and after the event,
the United Nations body reviewing the effects of atomic radiation on human health and the environment has said.
詳しくはUNSCEAR白書の原文を読んで下さい。
UNSCEAR White Paper
Evaluation Of Data On Thyroid Cancer In Regions Affected By The Chernobyl Accident
http://www.unscear.org/unscear/en/publications/Chernobyl_WP2017.html
