口腔MSCT-3D与COPT对比研究

摘要

Purpose:To explore the value of MSCT-3D in stomatology through comparing with COPT.Materials and Methods:Both MSCT 117 patients and COPT 117 patients in stomatology were selected at a particular period,COPT imaging was using computed post-processing,MSCT imaging was processed according to 3D information through work station,then to analyze the imaging results according to metal tooth、damaged tooth and broken tooth,later to compare the photograph 、the technique of computed post-processing、the photograph condition and exposure of MSCT and COPT.Results:Normal COPT patients were 9 cases ( 0.24% ),normal teeth were 3160 (84.4% ),unusual teeth were 551 (15.6%),normal MSCT-3D patients were llcases ( 0.29% ),normal teeth were 3138 (83.8% ),and unusual teeth were 606 (16.2% ).COPT belonged to COPT photograph,the emphasis was 2D,MSCT-3D belonged to spiral photograph,the emphasis was 3D,and MSCT imaging could be processed according to 3D reformation.The 3D effect of MSCT was batter than that of COPT.The radiation dosage was much higher than that of COPT.Conclusions: COPT could get 2D effects: MSCT-3D could improve 3D results on 2D basis,but the radiation dosage of MSCT is much higher than that of COPT in stomatology.%目的:通过与COPT对比,探究口腔MSCT-3D在临床中应用价值.材料和方法:COPT及MSCT各117例,COPT经计算机后处理,MSCT经工作站三维重建,根据影像结果,按金属牙、缺如和半残等项分别统计分析COPT及MSCT检查情况,并对摄影方法及影像后处理、摄影条件及照射剂量等项进行比较.结果:COPT牙齿正常9人(0.24%),正常记数3160颗(84.4%),异常记数551颗(15.6%),MSCT-3D牙齿正常11人(0.29%),正常记数3138颗(83.8%),异常记数606颗(16.2%).摄影方式,COPT属曲面摄影,MSCT属断面螺旋摄影;影像后处理,COPT侧重2D曲面,2D效果优于MSCT,MSCT侧重3D立体,可行多种三维重建,3D效果优于COPT.照射剂量,MSCT远高于COPT.结论:口腔COPT 2D影像性征显著;MSCT-3D在2D基础上,3D效果增加,但口腔专用,辐射剂量相对过大.