摘要
X射线CT(X-CT)的日益广泛普及,已经成为医疗照射防护中需要特别关注的热点。因此,在上海市开展的"十一五"期间医疗照射水平调查研究课题中,重点调查研究了全市医用诊断X-CT机装备及其使用的基本状况、应用频率以及所致剂量水平等。本文侧重分析全市X-CT的基本状况和应用频率及其分布的研究结果,并与世界各国现状进行了比较。截至2009年底,上海市共有112家的各级医院,使用着152台X-CT。以全市常住人口计,每百万人口X-CT拥有量逾7.9台;而全市中心区百万人均拥有量达16.9台。上海市2009年医用X-CT检查的应用频率已增至137.84人次/千人口,在医用X射线诊断的总频率中占17.7%;达到1996年的近4.2倍。进一步分析X-CT应用频率的各种分布可见,X-CT的扫描检查类型主要集中在头部、胸部和腹部;男性受检者多于女性;且以年龄大于40岁者居多等。最后针对有关医疗照射水平调查研究和相应大力加强X射线CT检查的医疗照射防护问题展开了具体讨论。
The continuously increasing and wide spread use of X-ray CT has become a hot spot in the field of medical radiation protection that requires special attention. Therefore, in a research program on medical exposure levels conducted during the Eleventh Five X-ray computed tomography （X -CT）; medical exposure;application frequency;distribution Shanghai Year Plan period in Shanghai, emphases were laid upon surveys to including the basic information, application frequency of and dose level caused by the medical diagnostic X - CT scanners in Shanhai. This article analyzes the basic information on X- CT scanners and their application frequencies in Shanghai, and compares with the world status as well. At the end of 2009, a total of 152 sets of X- CT scanners were in use in 112 hospitals throughout the city, which means the number of CT scanners per million population was averaged up to be more than 7.9 for the whole municipality, and 16.9 for the population in the central areas. The annual number of medical X- CT examinations has increased to 137.84 per thousand population, which accounted for 17.7% of the total number of medical X-ray diagnosis in Shanghai in 2009, and the number was 4.2 times of that in 1996. Further analyses revealed that the main types of examinations concentrated in the head, chest and abdomen scans, the frequency for males was higher than that for females, and the examinees were mostly older than 40. From the four-point revelations finally discussed, there is really an urgent need to strengthen the radiological protection in X-ray CT examinations, and it is a prominent and important issue in the field of medical radiation protection
出处
《辐射防护》
CAS
CSCD
北大核心
2013年第2期65-73,119,共10页
Radiation Protection
基金
上海市放射卫生重点学科建设项目(08 GWZX 0602)
卫生行业科研专项(201002009)
上海市公共卫生人才培养计划(GWDTR 201206
GWDTR 201208)
上海市卫生局科研项目(2007177)
关键词
X射线CT
医疗照射
应用频率
分布
上海市
X-ray computed tomography（ X - CT）
medical exposure
application frequency
distribution
Shanghai
