Estimation of Medical Exposure Dose from CT Examinations to Residents of Gunma Prefecture
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- Nakamura Junpei
- Department of Radiology, Gunma University Hospital
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- Yarita Kazuma
- Department of Radiology, Gunma University Hospital
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- Arai Keisuke
- Department of Radiology, Gunma University Hospital
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- Seki Yuko
- Department of Radiology, Gunma University Hospital
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- Iriuchijima Akiko
- Department of Radiology, Gunma University Hospital
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- Mogi Nao
- Department of Radiology, Gunma University Hospital
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- Takei Hiroyuki
- Department of Radiology, Gunma University Hospital
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- Suto Takayuki
- Department of Radiology, Gunma University Hospital
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- Otake Hidenori
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine
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- Endo Keigo
- Kyoto College of Medical Science
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- Tsushima Yoshito
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine
Bibliographic Information
- Other Title
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- 群馬県民のCT検査による医療被ばく線量の推定
- グンマ ケンミン ノ CT ケンサ ニ ヨル イリョウ ヒバクセンリョウ ノ スイテイ
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Abstract
<p>Purpose: To estimate the annual effective dose per person in Gunma Prefecture by calculating average effective dose from computed tomography (CT) examinations in the area.</p><p>Methods: We collected data on age, gender, anatomical region, and dose-length product (DLP) on patients who underwent CT examinations during a specific two-week period in July 2016 from 95 facilities in Gunma Prefecture.</p><p>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.</p><p>Conclusion: The effective dose per CT examination was 13.5 mSv. The annual effective dose per resident increased by about 28% from that of 2.3 mSv in 2000.</p>
Journal
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- The Kitakanto Medical Journal
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The Kitakanto Medical Journal 71 (1), 15-18, 2021-02-01
The Kitakanto Medical Society
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Details 詳細情報について
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- CRID
- 1390005822568778368
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- NII Article ID
- 130007995081
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- NII Book ID
- AN10585677
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- ISSN
- 18811191
- 13432826
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- HANDLE
- 10087/0002000007
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- NDL BIB ID
- 031304848
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed