Pediatric radiation dose and risk from bone density measurements using a GE Lunar Prodigy scanner
Pediatric radiation dose and risk from bone density measurements using a GE Lunar Prodigy scanner
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DOI：
10.1007/s00198-012-2261-x
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发表时间：
2013-07-01
影响因子：
4
通讯作者：
Karantanas, A.
中科院分区：
文献类型：
--
作者：
Damilakis, J.;Solomou, G.;Karantanas, A.
使用GE LUNAR Prodigy扇束双能X射线吸收计(DXA)扫描仪对儿童进行骨密度检查的有效辐射剂量被发现与铅笔束DXA设备的剂量相当，即低于1mU Sv。在这项研究中获得的与收购相关的癌症风险可以忽略不计。在文献中没有发现关于在GE LUNAR DXA扫描仪上进行儿科DXA后的辐射剂量和潜在风险的数据。这项研究旨在评估在GE月球神童扫描仪上进行的儿科检查中涉及的有效剂量和相关的癌症风险。四个代表新生儿、1岁、5岁和10岁患者的身体拟人模型被用来模拟DXA暴露。所有的收购都是使用Prodigy扫描仪进行的。使用模拟5岁和10岁儿童的模型对脊柱和双侧股骨进行剂量测量。此外，对本研究中使用的四个体模进行了全身检查的剂量测量。代表5岁儿童的体模的脊柱和臀部检查的性别平均有效剂量分别为0.65和0.36MU Sv，代表10岁儿童的体模的性别平均有效剂量分别为0.93MU和0.205 MU Sv。新生儿、1岁、5岁、10岁儿童全身检查有效剂量分别为0.25、0.22、0.19、0.15亩Sv。根据性别、年龄和DXA检查类型的不同，估计的终生癌症风险可以忽略不计，即0.02-0.25‰。给出了由其他机构安装的GE LUNAR Prodigy扫描仪进行检查的有效剂量估算公式。在GE LUNAR Prodigy扇束扫描仪上进行的儿科DXA检查的有效剂量和潜在癌症风险被发现与铅笔束DXA设备报告的剂量和风险相当。
Effective radiation doses associated with bone mineral density examinations performed on children using a GE Lunar Prodigy fan-beam dual-energy X-ray absorptiometry (DXA) scanner were found to be comparable to doses from pencil-beam DXA devices, i.e., lower than 1 mu Sv. Cancer risks associated with acquisitions obtained in this study are negligible.No data were found in the literature on radiation doses and potential risks following pediatric DXA performed on GE Lunar DXA scanners. This study aimed to estimate effective doses and associated cancer risks involved in pediatric examinations performed on a GE Lunar Prodigy scanner.Four physical anthropomorphic phantoms representing newborn, 1-, 5-, and 10-year-old patients were employed to simulate DXA exposures. All acquisitions were carried out using the Prodigy scanner. Dose measurements were performed for spine and dual femur using the phantoms simulating the 5- and 10-year-old child. Moreover, doses associated with whole-body examinations were measured for the four phantoms used in the current study.The gender-average effective dose for spine and hip examinations were 0.65 and 0.36 mu Sv, respectively, for the phantom representing the 5-year-old child and 0.93 and 0.205 mu Sv, respectively, for the phantom representing the 10-year-old child. Effective doses for whole-body examinations were 0.25, 0.22, 0.19, and 0.15 mu Sv for the neonate, 1-, 5-, and 10-year old child, respectively. The estimated lifetime cancer risks were negligible, i.e., 0.02-0.25 per million, depending on the sex, age, and type of DXA examination. A formula is presented for the estimation of effective dose from examinations performed on GE Lunar Prodigy scanners installed in other institutions.The effective doses and potential cancer risks associated with pediatric DXA examinations performed on a GE Lunar Prodigy fan-beam scanner were found to be comparable to doses and risks reported from pencil-beam DXA devices.