Abstract:
Objective To discuss the cause and consequence of a radiological accident, where 6 staff members were suspected to be irradiated. Similar medical cases were included by focusing on clinical manifestations, external radiation dose estimation, and medical treatment.
Methods Blood specimen was extracted from the 6 staff members to analyze the peripheral blood lymphocyte chromosomal aberration " dic+r” and micronucleus. Their personal medical histories were taken, and other auxiliary evaluations were conducted. The physical dose was obtained by directly calculating the cumulative dose. The psychological test on the 6 staff members was based on the Anxiety Self-Assessment Scale (SAS), Depression Self-Assessment Scale (SDS), and Eysenck Personality Questionnaire (16PF).
Results The staff members all reported complaints. Physical examination showed no obviously associated anomalies, and several abnormal results revealed in the auxiliary examination were not remarkably correlated with the radiological accident. In the biological dose estimation, " 1dic” was found in 1400 cells in the chromosome analysis of one staff member. No abnormal aberration was found among the rest. The physical dose estimation indicated that the maximum value of the surrounding dose equivalent rate was 20.15 mSv/h, whereas the cumulative radiation dose was 0.67 mSv. The psychological assessment showed that 3 of the 6 staff members had different degrees of anxiety and depression.
Conclusion Based on the results of clinical manifestations, biological and physical dose estimation, as well as the psychological test, the 6 staff members were not ionizing-irradiated and no clinically significant biological effect occurred.
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