不同牙列全颌曲面断层片投照体位错误分析  

Analysis of Malpositioning in Digital Panoramic Radiographs of Patients with Different Dentitions

作　　者：冯婧[1] 王晓筠[1] 陈力[1] 闫弘静 王博 宋子琦 李志民[1] FENG Jing;WANG Xiao-yun;CHEN Li;YAN Hong-jing;WANG Bo;SONG Zi-qi;LI Zhi-min(Department of Radiology,Hospital of Stomatology,Jilin University,Changchun 130021,China)

机构地区：[1]吉林大学口腔医院放射科,吉林长春130021

出　　处：《口腔医学研究》2018年第11期1257-1260,共4页Journal of Oral Science Research

摘　　要：目的:探讨提高全颌曲面断层片拍摄质量方法。方法:选取我院就诊患者所拍摄的曲面断层图像资料498例,根据其口内牙列类型分为无牙牙合组、混合牙列组、恒牙列组,评价全颌曲面断层摄影中常见的错误投照体位,并进行统计学分析。结果:混合牙列组每张曲面断层图像其平均投照体位错误类型数目较无牙组与恒牙列组更多,无牙牙合组患者的图像中"颏部位置较高"、"舌体没有紧贴上腭"和"颈部向前倾斜"错误类型发生频率较高,混合牙列期的儿童在拍摄曲面断层片时易发生头部的位置靠后和移动。结论:对不同牙列类型的患者进行正确投照定位是防止曲面断层图像出现错误和提高图像质量的重要方法。Objective:To discuss the method of improving the quality of panoramic tomography.Methods:498 digital radiographs taken from the hospital were selected,which were divided into permanent dentition group,mixed dentition group,and edentulous dentition group.The common errors made in the digital panoramic radiographs were analyzed.Results:In the mixed dentition group,the mean number of errors per radiograph was significantly higher than that in the permanent dentition radiographs and edentulous dentition radiographs.The errors of“the chin is tipped too high”,“patient's neck is stretched forward on a slant”,and“tongue is not on the plate”were significantly more prevalent in the edentulous dentition group.Children with mixed dentitions were prone to moving and positioning heads too backward during the radiograph procedure.Conclusion:Properly positioning the patients with different types of dentitions is the most important factor in preventing a cascade of errors and improving imaging quality.

关 键 词：全颌曲面断层片 图像质量 体位错误 影像诊断 

分 类 号：R78[医药卫生—口腔医学]