【摘要】 目的探讨不同初始切面在三维超声检查裂隙畸形时的误差与区别。方法应用GE Voluson E8超声诊断仪,采用静态三维成像模式,对金属片上的圆孔与长孔进行超声三维重建,对所得三维孔图像进行测量与实际数值对比;对7例唇裂或唇腭裂畸形胎儿及3例标本进行三维超声重建,初始切面分别与胎儿唇裂或唇腭裂裂隙平行和垂直,得到图像裂隙宽度进行对比。结果探头与金属片距离在30~90mm时,初始切面与裂隙垂直时三维重建裂隙宽度与实际值的比值在0.90~1.10;探头与金属片距离在50~75mm时,初始切面与裂隙平行时,三维重建裂隙宽度与实际值比值在0.90~1.10。其余距离时重建裂隙宽度与实际值的比值<0.90。初始切面不同所得胎儿唇裂或唇腭裂裂隙宽度不同,在分别与裂隙长轴平行和垂直所得数据不同,进行配对t检验后认为初始切面与裂隙垂直时所得数据较大。结论只有在探头与所检查对象在50~75mm时图像才接近于真实图像。在距离为30~50mm、75~90mm时图像失真,初始切面与裂隙平行时所得图像裂隙较垂直时更小,更难诊断。更多还原

【Abstract】 Objective To investigate the errors and differences of various initial planes in the diagnosis of ceasmic teratism with three-dimensional ultrasonography.Methods GE Voluson E8 ultrasound machine was applied for the ultrasonic diagnosis.Three-dimensional reconstruction was performed to the round holes and slotted holes.Then the data was compared with the actual values.In this study,three-dimensional reconstruction was conducted to 7 cheiloschisis or cheilognathoschisis fetus and 3 samples.Then the width of the fracture was compared.Results The ratio of fracture width to real value ranged from 0.90 to 1.10 as the distance of probe and metallic strip ranged from 30 to 90 mm,and 50 to 75 mm,respectively.In the other conditions,the ratio was less than 0.90.The extent of cheiloschisis or cheilognathoschisis width was dependent on the initial planes.Statistical difference was noted when the initial plane was vertical to the fracture.Conclusions The imaging obtained by ultrasonography was dissimilar to the real vision as the distance from the probe to the test item ranged from 30 to 50 mm and 75 to 90 mm,respectively.Under such conditions,it was hard to identify cheiloschisis or cheilognathoschisis.更多还原