Cancer Risk Assessment among Medical X-ray Workers in China
- VernacularTitle:中国医用X射线工作者恶性肿瘤危险评价
- Author:
Ji-Xian WANG
1
;
Liang-An ZHANG
;
Ben-Xiao LI
;
Yong-Cheng ZHAO
;
Zhi-Wei GAO
;
Zhi-Quan WANG
;
Jing-Yuan ZHANG
Author Information
1. Institute of Radiation Medicine
- From:
Acta Academiae Medicinae Sinicae
2001;23(1):65-68
- CountryChina
- Language:Chinese
-
Abstract:
Cancer incidence(1950 ～ 1995) among 27 011 medical X-ray workers in comparison with 25 782non X-ray medical specialists between 1950 and 1980 in China was investigated. The average cumulative dose received by the X-ray workers also reconstructed by retrospective dosimetry methods. Significant cancer risk was seen among medical X-ray workers(RR = 1.2). Significantly elevated risks were found in leukemia, cancer of skin, female breast, lung, liver, bladder and esophagus, the RRs were 2. 2, 4. 1,1.3, 1.2, 1.2, 1.8 and 2. 7 respectively. The patterns of cancer risk were associated with years since beginning of X-ray work, age and calendar year of initial employment and cumulative dose suggest that the risks of leukemia, skin cancer and female breast cancer, possibly thyroid cancer were related to occupational exposure to X-rays. A significant cancer risk could be induced by prolonged exposure to low dose ionizing radiation when the cumulative dose reached a certain level.
