【摘要】 目的测量口腔医学X线检查时人体接受的辐射剂量。方法测量成人尸体头部在口腔X线检查时的辐射剂量。采用32片氟化锂热释光放射性测量仪贴敷在头部的不同位置以代表辐射接受部,进行口内牙片、咬合片、头部测量片、曲面断层和面颅部CT扫描的X线检查。结果上述检查方法人体受照剂量分别为:口内牙片,0.006 mSv;咬合片,0.008 mSv;头部测量片,0.008 mSv;曲面断层,0.010 mSv和面颅部CT扫描(常规,2.020 mSv;"三维,"2.571 mSv)。结论CT扫描较常规X线摄影具有辐射量大的显著特点,是控制医疗辐射剂量的重点。为降低患者的辐射损伤,应严格掌握X线检查(尤其是CT扫描)的适应证。更多还原

【Abstract】 Objective To measure the radiation doses with radiographic examination in stomatology.Methods 32 LiF thermoluminescent dosimeters were placed in the post-morterm head′s different locations,representing radiation-accepted sides and the radiation was measured.Standard intra-oral periapical film,occlusal film,lateral cephalometric radiograph,panoramic radiograph and facial CT scans were taken.Results The respective radiation dose of intra-oral periapical radiograph was 0.006 mSv;occlusal film was 0.008 mSv;lateral cephalometric radiograph was 0.008 mSv;panoramic radiograph was 0.010 mSv and maxillo-mandibular CT scan was 2.020 mSv(routine) and 2.571 mSv(three-dimension).Conclusion CT scans produced significantly more radiation than conventional radiographs.It′s important to control the medical service radiation dose.In order to reduce patient′s radiation damage,doctors should know adaptation diseases for X-ray examinations(particularly the CT scanning).更多还原