Objective To investigate chromosome aberration and micronucleus frequency in peripheral blood lymphocytes in workers engaged in radiation for a long time,to reduce occupational hazard caused by ionizing radiation and ...Objective To investigate chromosome aberration and micronucleus frequency in peripheral blood lymphocytes in workers engaged in radiation for a long time,to reduce occupational hazard caused by ionizing radiation and to further strengthen health surveillance.Methods A total of 366 members of medical staff engaged in radiation work who underwent physical examinations in展开更多
Introduction:The effective dose caused by the external exposure of medical radiation workers has dramatically declined in China.By contrast,less attention has been given to internal exposure to radiation.This study ai...Introduction:The effective dose caused by the external exposure of medical radiation workers has dramatically declined in China.By contrast,less attention has been given to internal exposure to radiation.This study aimed to describe the national monitoring of the internal exposure of Chinese nuclear medicine(NM)workers from 2021 to 2023.These findings provide essential baseline data for enhancing radiation protection protocols in NM facilities and optimizing national internal exposure monitoring.Methods:All the non-military hospitals in China with an NM program were investigated.Portable gamma spectrometers were used to measure the ^(131)I activities of the thyroid of staff members at ^(131)I treatment sites.Results:A total of 998 hospitals in China had an NM program in 2023.Detectable rate(measurements above minimum detectable activity)decreased from 26.2%in 2021 to 20.1%in 2023.The proportion of measurements exceeding 1.0×10^(2) Bq decreased from 12.8%in 2021 to 10.0%in 2023.The detectable rate varied with job categories(P=0.001),with the detectable rate of cleaners being the highest.Conclusions:In China,^(131)I was detected in the thyroid of about one-fifth of the subjects working at radioiodine treatment sites.Detectable rate exhibited a slow downward trend in recent years.展开更多
文摘Objective To investigate chromosome aberration and micronucleus frequency in peripheral blood lymphocytes in workers engaged in radiation for a long time,to reduce occupational hazard caused by ionizing radiation and to further strengthen health surveillance.Methods A total of 366 members of medical staff engaged in radiation work who underwent physical examinations in
文摘Introduction:The effective dose caused by the external exposure of medical radiation workers has dramatically declined in China.By contrast,less attention has been given to internal exposure to radiation.This study aimed to describe the national monitoring of the internal exposure of Chinese nuclear medicine(NM)workers from 2021 to 2023.These findings provide essential baseline data for enhancing radiation protection protocols in NM facilities and optimizing national internal exposure monitoring.Methods:All the non-military hospitals in China with an NM program were investigated.Portable gamma spectrometers were used to measure the ^(131)I activities of the thyroid of staff members at ^(131)I treatment sites.Results:A total of 998 hospitals in China had an NM program in 2023.Detectable rate(measurements above minimum detectable activity)decreased from 26.2%in 2021 to 20.1%in 2023.The proportion of measurements exceeding 1.0×10^(2) Bq decreased from 12.8%in 2021 to 10.0%in 2023.The detectable rate varied with job categories(P=0.001),with the detectable rate of cleaners being the highest.Conclusions:In China,^(131)I was detected in the thyroid of about one-fifth of the subjects working at radioiodine treatment sites.Detectable rate exhibited a slow downward trend in recent years.
