| 王卫鹏,张翼,张梦龙,等.基于辐射剂量结构化报告的CT辐射剂量分析[J].中华放射医学与防护杂志,2014,34(9):706-709.,et al.Analysis of CT radiation dose based on radiation-dose-structured reports[J].Chin J Radiol Med Prot,2014,34(9):706-709 |
| 基于辐射剂量结构化报告的CT辐射剂量分析 |
| Analysis of CT radiation dose based on radiation-dose-structured reports |
| 投稿时间：2014-02-04 |
| DOI：10.3760/cma.j.issn.0254-5098.2014.09.018 |
| 中文关键词: 结构化报告 辐射剂量 计算机断层扫描 诊断学参考水平 |
| 英文关键词:Structured report Radiation dose Computed tomography Diagnostic reference level |
| 基金项目:山东省医药卫生科技发展计划项目（2013WS0179） |
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| 中文摘要: |
| 目的 应用医学数字成像和通信（DICOM）标准定义的辐射剂量结构化报告（RDSR），实现CT检查的辐射剂量统计分析。方法 利用自行设计的软件，通过检索影像归档和通信系统（PACS），获取1 230份CT检查的RDSR文件。将相关信息提取后，结合扫描部位建立患者剂量数据库。根据年龄将患者分为成年组（10岁以上）及儿童组（0~1岁，1~5岁，5~10岁），分别统计各扫描部位的平均容积CT剂量指数（CTDIvol）、剂量长度乘积（DLP），估算有效剂量（E）；并计算75%分位DLP值，与诊断学参考水平（DRL）相比较。结果 成年患者组，CTDIvol与DLP值呈中度正相关（r=0.41），上腹部增强扫描的E最高，其75%分位DLP值超过DRL60%；儿童5~10岁组的CTDIvol高于0~1岁与1~5岁组（t=2.42、2.04，P<0.05），DLP值与年龄呈低度正相关（r=0.16），E与年龄呈中度负相关（r=-0.48）。结论 应用RDSR获得患者辐射剂量是一种简单、高效的方法。随着新设备的普及与区域化医疗平台的应用，RDSR将成为剂量学水平调查及个人剂量记录的主要工具。 |
| 英文摘要: |
| Objective To analyse the CT radiation dose statistically using the standardized radiation-dose-structured report (RDSR) of digital imaging and communications in medicine (DICOM).Methods Using the self-designed software, 1230 RDSR files about CT examination were obtained searching on the picture archiving and communication system (PACS). The patient dose database was established by combination of the extracted relevant information with the scanned sites. The patients were divided into adult group (over 10 years) and child groups (0-1 year, 1-5 years, 5-10 years) according to the age. The average volume CT dose index (CTDIvol) and dose length product (DLP) of all scans were recorded respectively, and then the effective dose (E) was estimated. The DLP value at 75% quantile was calculated and compared with the diagnostic reference level (DRL).Results In adult group, CTDIvol and DLP values were moderately and positively correlated (r=0.41), the highest E was observed in upper abdominal enhanced scan, and the DLP value at 75% quantile was 60% higher than DRL. In child group, their CTDIvol in group of 5-10 years was greater than that in groups of 0-1 and 1-5 years (t=2.42, 2.04, P<0.05); the DLP value was slightly and positively correlated with the age (r=0.16), while E was moderately and negatively correlated with the age (r=-0.48). Conclusions It is a simple and efficient method to use RDSR to obtain the radiation doses of patients. With the popularization of the new equipment and the application of regionalized medical platform, RDSR would become the main tool for the dosimetric level surveying and individual dose recording. |
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