放射治疗是恶性肿瘤的主要治疗手段之一.河南省属全国恶性肿瘤高发省份,放射治疗设备数量居全国前列.为了解河南省放射治疗设备性能指标合格情况,提高设备检测合格率和放射治疗效果,对河南省部分放射治疗设备进行了质量控制检测,结果报道如下. 一、材料与方法 1.调查对象:对全省18个地市(含110个县和县级市)的各类放射治疗设备数量进行调查,并按照研究课题实施方案对检测设备数量的要求,从2011年10月开始对河南省部分医疗机构的16台医用电子加速器(国产13台、进口3台,X射线能量均为6 MeV)、3台60Co远距离治疗机(以下简称60Co治疗机)、3台后装治疗机(均为192 Ir放射源)和3台头部γ刀进行质量控制检测.

In July 2009, an incident involving a stuck Co-60 source led hundreds of thousands of people to escape Qi County, Henan Province, China, although no medical or environmental consequences were related to the incident. To investigate knowledge about radiation, public risk-perception of radiation, and evaluation of the official response, a survey was conducted in Qi and Hui County (control). Face-to-face questionnaire interviews were conducted among three groups with different educational backgrounds. In total, 1340 valid questionnaires were collected from people interviewed. Knowledge about radiation was low in all groups in both counties, although knowledge in Qi County was higher than that in Hui County (control). More than 40 respondents supported construction of nuclear power plants (NPPs) in China, while only a few supported constructing NPPs in their vicinity. The main reasons for the mass escape following the incident were assumed to be lack of knowledge about radiation, misinformation, the governments failure to disclose information in time and imitation of group behaviour. Over 60 in Group I and II trusted the local government. About 64 disapproved the response of the Qi County government. After the incident, the population in Qi County still knows little about radiation. Although people trust the government, they are dissatisfied with the response of the local government regarding the incident.

Objective To investigate radiation risk perception and nuclear acceptance after the 60Co stuck source incident in June 2009 in Qixian County,Henan Province.Methods From March to April 2010,23 hamlets and 2 schools from 5 towns in Qixian County were selected,while 3 hamlets and 2 schools from 3 towns were used as control in Huixian County,1 35 km away where no any impact of the incident was found.Face-to-face questionnaire survey was conducted among three groups including mass public,elite public(representatives of public opinion,such as physicians,teachers,govemmental officials,administrative personnel,private entrepreneurs),and middie school students(the third grade students in junior middle schools and the first grade students in senior middle schools).Results A total of 1 340 valid questionnaires were collected.The public knowledge levels about radiation and nuclear power were low among all groups in two areas and public knowledge levels in Qixian County were higher than those in Huixian County.In both areas.the knowledge levels of the students were higher tIIan those among the elite public,and that among the general public were the lowest.The knowledge levels of males and those with higher educational levels were higher than those of females and those with lower educational levels.More than 40.0% of the respondents supported the idea to build nuclear power plants in China.but only a small part of them supported to build nuclear power plants in their own areas.The percentages of opponents against local nuclear power plant construction were especially higher among the students and those with higher educational levels.More than 60% of the mass public and elite public believed the explanation of the government.More than 80% of the respondents held negative attitudes towards the performance of the Qixian County Government in dealing with this incident.The student gave the lowest evaluation of the credibility and the specific performance of the local government,whereas the elite public placed themselves between the students and the mass public.The reasons why the local people left their homes to evade risk included rumors(67.2%),lack of radiation knowledge(61.9%),group psychology(59.2%),and failure of the government to inform the truth to the public in time(42.3%).Conclusions The public still fails to know enough about radiation and nuclear power.Although they trust the government,they are dissatisfied with the performance of the local government in dealing with the incident.The negative evaluation of the students is worth concerning.