Koivisto Juha, van Eijnatten Maureen, Kiljunen Timo, Shi Xie-Qi, Wolff Jan
Department of Oral and Maxillofacial Surgery, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands.
International Docrates Cancer Center, Helsinki, Finland; Saukonpaadenranta 2, FI-00180, Helsinki, Finland.
Radiat Prot Dosimetry. 2018 Apr 1;179(1):58-68. doi: 10.1093/rpd/ncx210.
The objective of the present study was to assess and compare the effective doses in the wrist region resulting from conventional radiography device, multislice computed tomography (MSCT) device and two cone beam computed tomography (CBCT) devices using MOSFET dosemeters and a custom made anthropomorphic RANDO phantom according to the ICRP 103 recommendation. The effective dose for the conventional radiography was 1.0 μSv. The effective doses for the NewTom 5 G CBCT ranged between 0.7 μSv and 1.6 μSv, for the Planmed Verity CBCT 2.4 μSv and for the MSCT 8.6 μSv. When compared with the effective dose for AP- and LAT projections of a conventional radiographic device, this study showed an 8.6-fold effective dose for standard MSCT protocol and between 0.7 and 2.4-fold effective dose for standard CBCT protocols. When compared to the MSCT device, the CBCT devices offer a 3D view of the wrist at significantly lower effective doses.
本研究的目的是根据国际辐射防护委员会（ICRP）第103号建议，使用金属氧化物半导体场效应晶体管（MOSFET）剂量仪和定制的拟人化RANDO体模，评估并比较传统放射成像设备、多层螺旋计算机断层扫描（MSCT）设备以及两台锥束计算机断层扫描（CBCT）设备在腕部区域产生的有效剂量。传统放射成像的有效剂量为1.0微希沃特。NewTom 5 G CBCT的有效剂量在0.7微希沃特至1.6微希沃特之间，Planmed Verity CBCT为2.4微希沃特，MSCT为8.6微希沃特。与传统放射成像设备前后位（AP）和侧位（LAT）投照的有效剂量相比，本研究显示标准MSCT协议的有效剂量高8.6倍，标准CBCT协议的有效剂量高0.7至2.4倍。与MSCT设备相比，CBCT设备能以显著更低的有效剂量提供腕部的三维视图。
