학술논문
Estimation of Medical Exposure Dose from CT Examinations to Residents of Gunma Prefecture / 群馬県民のCT検査による医療被ばく線量の推定
Document Type
Journal Article
Author
Source
北関東医学 / The Kitakanto Medical Journal. 2021, 71(1):15
Subject
Language
Japanese
ISSN
1343-2826
1881-1191
1881-1191
Abstract
Result: We used data from 12,878 (7,014 males; 5,864 females) CT examinations on patients 10 years old and older (age 66.9+/-17.5 years, 10-104 years). The effective doses were 2.4 mSv for head examinations (2,664 cases), 9.3 mSv for chest examinations (2,192 cases), 19.9 mSv for chest and abdomen examinations (3,906 cases), 16.5 mSv for abdomen examinations (1,611 cases), 14.5 mSv for coronary artery CT examinations (retrospective) (144 cases), 8.6 mSv for coronary artery CT examinations (prospective) (129 cases), 34.2 mSv for dynamic liver examinations (749 cases), with an average of 13.5 mSv overall. According to the National Database (from April, 2016 to March, 2017) of the Ministry of Health, Labour and Welfare, the annual number of CT examinations in Gunma prefecture was 430,000; thus the annual effective dose by CT examination per resident was calculated as 2.95 mSv.