基于放射信息系统调查某医院不同X射线诊断检查类型的频次分布
Frequency Distribution of Different X-Ray Diagnostic Examinations in Hospital Based on Radiology Information System
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摘要:
目的 利用放射信息管理系统(RIS)数据信息了解X射线诊断检查的频次分布情况。 方法 通过RIS数据库搜集2012 年1 月1 日至12 月31 日全年某区医院接受X射线诊断检查时的编号(ID)、性别、出生日期、受检时间、检查部位等相关信息,然后利用SAS 软件对数据进行清理及相应的统计处理,调查不同性别、年龄及受检部位的患者接受不同X射线诊断检查类型的频次分布,及依据患者年龄、受检部位统计2012 年患者重复接受CT 检查的情况。 结果 该医院共有11 台医用诊断X射线机,2012 年全年共进行416 947 人次X射线诊断检查。其中,接受计算机X射线摄影/数字化X射线摄影(CR/DR)检查最高,为328 484 人次;其次为计算机断层扫描(CT)79 897 人次;牙科摄影为7 303 人次。在所有X射线诊断检查中,胸部摄影所占比例最高,约为40.2%;其次为四肢及关节摄影,为27.0%;再次为头部CT检查,约为6.4%。在接受儿童CT 扫描的患者中,头部CT 检查比例占70.3%。CT 重复检查的比例随年龄的增加而增加,0~15 岁受检者重复检查的比例约占7.0%;16~40 岁占14.4%;40 岁以上占22.3%。 结论 利用RIS 系统可获取详细的X射线诊断照射信息,方法科学且经济可行。除CR/DR以外,CT检查人次数占所有X射线诊断检查人次数的比重较高,其中,头部CT 较常见,尤其是儿童。 Abstract:Objective To understand the frequency distribution of X-ray diagnostic examinations through radiology information system (RIS). Methods Information was collected through RIS from 1 Jan to 31 Dec 2012, including ID, sex, birth date, examination time, and examined body parts of patients who underwent X-ray diagnostic examinations in a hospital. The SAS was used for data cleansing and statistical analysis of the frequency distribution of different X-ray diagnostic examinations among patients categorized by sex, age, and examined body part and the repeated CT examinations among patients categorized by age and examined body part. Results There were 11 sets of X-ray machines and 416 947 X-ray examinations conducted in 2012 in the hospital. Among them, the highest number of examinations was 328 484 for computed radiography/direct radiography (CR/DR), followed by 79 897 for computerized tomography (CT), and 7 303 for dental radiology. The most often examined body part was chest that accounted for 40.2% of all X-ray diagnostic examinations, followed by limbs and joints (27.0%), and head (6.4%). Among the children who underwent CT scans, 70.3% of them had head CT scans. The proportion of patients who had repeated CT scans increased with age: 7.0% for the children aged 0-15 years old, 14.4% for those aged 16-40 years old, and 22.3% for those aged older than 40 years old. Conclusion The method to obtain medical X-ray exposure data from RIS is scientific and economic. Except for CR/DR, the higher frequency of CT examination accounts for that of all X-ray diagnostic examinations. Head CT is common in CT scans, especially for children.
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