Li Gang
Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing, China.
Imaging Sci Dent. 2013 Jun;43(2):63-9. doi: 10.5624/isd.2013.43.2.63. Epub 2013 Jun 14.
After over one decade development, cone beam computed tomography (CBCT) has been widely accepted for clinical application in almost every field of dentistry. Meanwhile, the radiation dose of CBCT to patient has also caused broad concern. According to the literature, the effective radiation doses of CBCTs in nowadays market fall into a considerably wide range that is from 19 µSv to 1073 µSv and closely related to the imaging detector, field of view, and voxel sizes used for scanning. To deeply understand the potential risk from CBCT, this report also reviewed the effective doses from literatures on intra-oral radiograph, panoramic radiograph, lateral and posteroanterior cephalometric radiograph, multi-slice CT, and so on. The protection effect of thyroid collar and leaded glasses were also reviewed.
经过十多年的发展，锥形束计算机断层扫描（CBCT）已在牙科几乎每个领域的临床应用中被广泛接受。与此同时，CBCT对患者的辐射剂量也引起了广泛关注。根据文献，目前市场上CBCT的有效辐射剂量范围相当广泛，从19微希沃特到1073微希沃特，并且与成像探测器、视野和用于扫描的体素大小密切相关。为了深入了解CBCT的潜在风险，本报告还回顾了口腔内X光片、全景X光片、侧位和正位头颅测量X光片、多层CT等文献中的有效剂量。还回顾了甲状腺防护颈圈和铅眼镜的防护效果。
