数字 X 射线摄影中的患者剂量和比释动能面积乘积估算。

ESTIMATES OF PATIENT DOSES AND KERMA-AREA PRODUCT MONITORING IN DIGITAL RADIOGRAPHY.

机构信息

Chitkara School of Health Sciences, Chitkara University, Punjab, India.

Chitkara University Institute of Engineering & Technology, Chitkara University, Punjab, India.

出版信息

Radiat Prot Dosimetry. 2020 Aug 3;190(1):22-30. doi: 10.1093/rpd/ncaa072.

DOI:10.1093/rpd/ncaa072

PMID:32491168

Abstract

The application of the kerma-area product (PKA) meter is increased rapidly in dosimetry. This study presents measurements of PKA in adherence to the International Atomic Energy Agency protocol for 300 adult patients in digital radiographic procedures. Effective doses (ED) were calculated from PKA measurements and conversion coefficients (E-103/PKA) obtained from the International Commission on radiological protection 103. In skull posteroanterior (PA), skull lateral (LAT), cervical spine anteroposterior (AP), cervical spine LAT, chest PA, abdomen AP, lumbar spine AP, pelvis AP and lumbar spine LAT, the third-quartile PKA values were found to be 0.2, 0.28, 0.33, 0.19, 0.26, 0.95, 0.93, 0.96 and 3.15 Gycm2, and estimated mean EDs were 0.005, 0.008, 0.056, 0.021, 0.037, 0.146, 0.165, 0.097 and 0.258 mSv, respectively. The third-quartile PKA values were suggested as local diagnostic reference levels (LDRLs). Results were compared with the diagnostic reference levels (DRLs) of the UK, the European Commission, previously published LDRLs in Greece and China by Metaxas et al. and Zhang and Chu, respectively. The PKA (third-quartile) value for cervical spine AP was 120% higher than UK 2010 DRLs, lumbar spine LAT was 123% higher than LDRLs given by Metaxas et al. and chest PA was 160% higher than UK 2010 DRLs and 225% higher than Metaxas et al. provided LDRLs. The PKA results were lower than the UK, and two studies in Greece by Metaxas et al. except for chest PA, cervical spine AP and lumbar spine LAT showed the need for further optimization. The LDRLs reported in this study may further contribute to establishing future national DRLs.

摘要

在放射剂量学中，比释动能面积乘积（PKA）剂量仪的应用正在迅速增加。本研究按照国际原子能机构的协议，对 300 名接受数字放射摄影程序的成年患者进行了 PKA 测量。从 PKA 测量值和国际辐射防护委员会第 103 号出版物(E-103/PKA)中获得的转换系数计算有效剂量（ED）。在后前位颅骨（PA）、侧位颅骨（LAT）、颈椎前后位（AP）、颈椎侧位（LAT）、胸部 PA、腹部 AP、腰椎 AP、骨盆 PA 和腰椎 LAT 中，第三四分位数 PKA 值分别为 0.2、0.28、0.33、0.19、0.26、0.95、0.93、0.96 和 3.15Gycm2，估计平均 ED 分别为 0.005、0.008、0.056、0.021、0.037、0.146、0.165、0.097 和 0.258mSv。第三四分位数 PKA 值被建议作为局部诊断参考水平（LDRL）。结果与英国、欧盟、Metaxas 等人先前发表的希腊和中国 LDRL、以及 Zhang 和 Chu 的诊断参考水平（DRL）进行了比较。颈椎 AP 的 PKA（第三四分位数）值比英国 2010 年 DRL 高 120%，腰椎 LAT 比 Metaxas 等人提供的 LDRL 高 123%，胸部 PA 比英国 2010 年 DRL 高 160%，比 Metaxas 等人提供的 LDRL 高 225%。与英国和 Metaxas 等人的两项希腊研究相比，除胸部 PA、颈椎 AP 和腰椎 LAT 外，本研究的 PKA 结果较低，表明需要进一步优化。本研究报告的 LDRL 可能有助于制定未来的国家 DRL。