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Patient radiation dose and protection from cone-beam computed tomography

Imaging Science in Dentistry 2013³â 43±Ç 2È£ p.63 ~ 69
Li Gang,
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 ( Li Gang ) - China Peking University School and Hospital of Stomatology Department of Oral and Maxillofacial Radiology

Abstract


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 ¥ìSv to 1073 ¥ìSv 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.

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Radiation Dosage; Cone-Beam Computed Tomography; Tomography; Spiral Computed; Radiation Protection

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