中华放射医学与防护杂志

张丹丹,章群,陈斌,王爱红,胡碧波,屈凌燕.基于DICOM文件的数字化X射线摄影入射体表剂量计算值与热释光测读值的比较[J].中华放射医学与防护杂志,2018,38(10):787-791

基于DICOM文件的数字化X射线摄影入射体表剂量计算值与热释光测读值的比较

Comparison of digital radiography's entrance surface doses computed from DICOM file or directly from TLDs

投稿时间：2018-02-24

DOI：10.3760/cma.j.issn.0254-5098.2018.10.014

英文关键词:Medical irradiation Entrance surface dose Digital radiography DICOM file

基金项目:

作者	单位
张丹丹	315010 宁波市疾病预防控制中心环境与职业卫生所
章群	315010 宁波市疾病预防控制中心环境与职业卫生所
陈斌	315010 宁波市第二医院放射科
王爱红	315010 宁波市疾病预防控制中心环境与职业卫生所
胡碧波	315010 宁波市第二医院放射科
屈凌燕	315010 宁波市疾病预防控制中心环境与职业卫生所

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中文摘要:

目的以DigitalDiagnost型飞利浦数字化X射线摄影（DR）为例，对比DR入射体表剂量（ESD）信息化计算值与热释光探测器（TLD）测读值的一致性，为实现DR诊疗医疗照射辐射剂量的信息化管理提供参考依据。方法热释光法获取就诊对象胸部、腹部、椎体、骨盆和四肢5个诊疗部位的ESD测读值，从DICOM文件收集就诊对象放射诊疗中记录的各项参数，按照剂量面积乘积（DAP）法和曝光参数法分别计算ESD信息化值。通过组内相关系数（ICC）和Bland-Altman法评价ESD信息化值和热释光测读值的一致性。结果 DAP法、曝光参数法和热释光法得到的就诊对象ESD值依次为（0.730±0.870）、（0.720±0.863）和（0.770±0.948）mGy；ESD^DAP-TLD组内相关系数为0.988，ESD^{曝光参数-TLD}组内相关系数为0.982，Bland-Altman图显示ESD^DAP-TLD和ESD^{曝光参数-TLD}超差值均数95%置信区间的计算值均为6.7%。结论 DigitalDiagnost型飞利浦DR日常诊疗过程以固定模式程序化诊疗为主，在设备性能质量控制合格的前提下，基于DICOM文件的信息化计算值与热释光测读值具有较好的一致性。

英文摘要:

Objective To make comparison of consistency between the ESD's information-calculated values and TLD readout values based on PHILIPS DigitalDiagnost so as to provide reference for realizing information management of medical exposure radiation dose during DR diagnosis and treatment. Methods TLDs were used to obtain the ESD values on chest, abdomen, vertebral body, pelvis and limbs. The exposure parameters were collected from the DICOM files, and the information value of ESD were calculated through the dose area product (DAP) method and the exposure parameter method. The consistency between information value and TLD readout value was compared by intraclass correlation coefficient and the Bland-Altman method. Results The ESD values obtained from DAP method, exposure parameter method and TLD method are, respectively, (0.730±0.870) mGy, (0.720±0.863) mGy and (0.770±0.948)mGy. ICC was 0.988 for ESD^DAP-TLD and 0.982 for ESD^{Parameters-TLD}, respectively. The Bland-Altman map showed that the D-value of ESD obtained from DAP-TLD and Parameters-TLD beyond the 95% consistency interval was 6.7%. Conclusions The PHILIPS DR daily diagnosis and treatment process is based on fixed-mode programmed diagnosis and treatment. Under the premise of qualified equipment quality control, the information calculated value based on DICOM files has a good consistency with TLD readout value.

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