Dissertation > Medicine, health > Preventive Medicine,Health > Radiation Health > Radioactive measurement and dose

Effect of Low-dose Ionizing Radiation on Medical X-ray Workers in Chromosome Aberration

Author YaoYuHua
Tutor DiLiXiaTi·YaHeFu
School Xinjiang Medical University
Course Epidemiology and Biostatistics,
Keywords Chromosomal aberrations Cumulative dose Medical X- ray workers
CLC R144
Type Master's thesis
Year 2007
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Objective: To understand occupational low-dose external beam radiation for medical X-ray workers, the impact of chromosomal aberrations . Methods Descriptive epidemiological research methods, Hongkou District, Shanghai two workers in the hospital X-ray chromosomal aberrations and its related factors were studied. Results : 1. Radiation group was 0.464% distortion cells , compared with the control group , the difference was statistically significant (p <0.01), which distortion ring dicentric chromosome aberration ( hereinafter referred to as double-loop distortion ) , no significant centromere aberration , chromosome aberration cell rate , distortion and other indicators haplotype radiation group were higher (p <0.05), the relevant factors were analyzed and found no gender, age , smoking status, chromosome aberrations on the radiation group effect (p> 0.05); findings on seniority seniority between groups of different bicyclic distortion , no distortion of the centromere , distortion rate of undifferentiated cells (p> 0.05), but haplotype distortion in the seniority of 10 ~ 29 years of service was the highest , the statistical test , length of service with the other groups was statistically significant (p <0.05). (2) for the past five years cumulative dose radiation group analysis : chromosome aberration rate increased five- radiation group increases with cumulative dose . High-dose group had no significant distortion rate of 0.448% centromere , distortion cells was 0.586% , 1.241% distortion rate of haplotypes , with the low -dose group, there were significant differences (p <0.001). 3 radiation group two weeks prevalence ( 8.96% ) and one-year incidence of upper respiratory tract infection ( 78.26% ) was significantly higher (p <0.05). 4 in the radiation group of chromosome aberrations occurred no chromosomal aberrations personnel and personnel Hb, RBC, WBC, PLT count no difference (p> 0.05). Conclusion Long-term low-dose external beam radiation occupational chromosomal aberrations is a risk factor , and there are nearly five years with the cumulative radiation dose increases . Therefore , we must do the work occupational radiological protection .

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