螺旋CT在埋伏牙精确定位中的临床应用研究  

Clinical application and evaluation of precise localization of spiral CT for embedded teeth

作　　者：陈斌[1,2] 张祥林[3] 

机构地区：[1]辽宁医学院研究生学院 [2]辽宁医学院附属第二医院放射线科,辽宁锦州121000 [3]辽宁医学院附属第一医院放射线科,辽宁锦州121000

出　　处：《中国医学工程》2013年第10期11-12,共2页China Medical Engineering

摘　　要：目的研究螺旋CT成像在颌骨内埋伏牙定位诊断中的临床应用价值。方法通过收集辽宁医学院附属第二医院口外科和正畸科就诊的109例埋伏牙患者,先行CR摄影,再应用螺旋CT进行容积扫描,分别采用最大密度投影法(MIP)、多平面重建(MPR)、容积再现法(VR)获得牙的图像,显示埋伏牙的形态、位置及与邻牙的关系。将两种影像的观察指标分别与手术拔除的埋伏牙对比,并进行统计学分析MSCT的优势。结果 109例患者均获得满意的CR及MSCT图像,共检出158颗埋伏牙。对比CR摄影,MSCT在显示埋伏牙的数目、形态、大小、位置、方向、与周围组织及邻牙的关系的观察指标中,明显优于CR摄影,和手术拔除的埋伏牙一致性好。结论多层螺旋CT对埋伏阻生牙的定位可提供精准的数据信息及影像,优于CR摄影,能够为医师选择最优秀的治疗方案提供最直观的依据,具有明显的临床应用价值。【Objective】Study of spiral CT imaging in bone of embedded teeth in localization diagnosis of the clinical application value.【Methods】By collecting Liaoning Affiliated Second Hospital of mouth surgery and orthodontic outpatients,109 cases have embedded teeth,first CR photographic,spiral CT volume scan,respectively,using the maximum intensity projection（MIP）,multi-planar reconstruction（MPR）,volume rendering method（VR） image of the tooth,display the embedded tooth shape,position and relationship with the adjacent teeth.Comparison of both image outcome measures surgical extraction of embedded teeth,and the advantages of statistical analysis MSCT.【Resluts】109 patients were satisfied with the CR and the MSCT image,were detected 158 embedded teeth.Contrast CR Photography of MSCT in the the show impacted tooth number,shape,size,position,direction,the relationship with the surrounding tissue and the adjacent teeth outcome measures significantly better than the CR photography,and surgical extraction of embedded teeth consistency with statistical significance.【Conclusion】Multi-slice CT embedded teeth positioning to provide accurate data and image,Better than the CR Photography,Able to choose the best treatment options for physicians to provide the most intuitive basis,Has significant clinical value.

关 键 词：埋伏牙 螺旋CT 三维重建 CR摄影 

分 类 号：R445[医药卫生—影像医学与核医学]