Retrospective Dose Reconstruction for Medical Diagnostic X Ray Workers in China using Stable Chromosome Aberrations
| Autor: | X.-L. Wang, Z.-Q. Wang, J. Li, T. Sugahara, W.-S. Tang, X.-P. Liu, Q. Wang, Y.-M. Sun, T. Aoyama |
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| Rok vydání: | 1998 |
| Předmět: |
Physics
Medical diagnostic Radiation Radiological and Ultrasound Technology business.industry Public Health Environmental and Occupational Health X-ray Chromosome Chromosomal translocation General Medicine Linear quadratic Chromosome aberration Dicentric chromosome Optics Radiology Nuclear Medicine and imaging Nuclear medicine business Metaphase |
| Zdroj: | Radiation Protection Dosimetry. 77:87-89 |
| ISSN: | 1742-3406 0144-8420 |
| Popis: | The chromosome rearrangements in medical diagnostic X ray workers were analysed using the G-banding technique and evaluated collectively in accumulated doses. A total of 9102 metaphase spreads from 84 medical diagnostic X ray workers and 17 controls were scored. The results showed that: (I) the frequencies of translocation, stable chromosome aberration and total aberration in X ray workers were significantly higher than those of controls (P < 0.05 ∼ 0.005), unstable chromosome aberrations (including dicentric and acentric aberration) tended upwards; (2) the main aberration in stable aberrations was reciprocal translocation; (3) the stable aberration predominated strikingly in total aberrations. The medical diagnostic X ray workers were divided into three groups according to calendar year of entry. The data showed that the frequencies of translocation, stable aberration and total aberration increased with earlier year of entry, especially in two groups who started working before 1970. According to the equation recommended by Straume et al, linear coefficient (a) in the linear quadratic model provided by Femandez's experiment, their collective accumulation doses calculated were 0.53, 0.26 and 0.06 Gy for calendar year of entry before 1960, 1960-1969, and after 1970, in X ray workers, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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