摘要
目的采用MRI虚拟现实技术重建阴道并探讨盆底器官脱垂患者阴道的形态特征变化。方法 POP组20例,对照组20例。研究对象均行盆腔MR I检查。将采集的二维图像数据通过虚拟现实软件进行三维重建,并对特定横截面的阴道壁厚度、面积和阴道模型体积、形态进行观测。结果对比POP组和对照组阴道横截面正中矢状线距离,两组差异无统计学意义(均P>0.05)。POP组阴道横截面面积均大于对照组,且差异有统计学意义(均P<0.05)。POP组阴道体积大于对照组,经比较差异有统计学意义(P<0.05)。POP组有60%患者阴道形态不规则,呈不对称性。阴道轴向未见明显变化。结论 MRI虚拟现实技术是观察阴道形态的有效方法。POP患者未发现阴道本身结构的薄弱缺损,但存在形态改变,MR I表现的阴道形态变化可以间接地反映盆底支持组织的功能状态。
Objective To reconstruct the vagina model using magnetic resonance imaging(MRI) virtual reality technology and investigate the morphologic changes of vagina in pelvic organs prolapse(POP) patients.Methods POP patients(n=20) and controls(n=20) were enrolled in the study.All of them underwent 3D-T2 MRI imaging of pelvis.The MRI files were imported into virtual reality system,and 3-D models of each vagina were created.The transverse plane cross-sectional area and mid-sagittal plane diameter of each vaginal model were measured,and vaginal volume and shapes were assessed using 3-D virtual reality software.Results Vaginal thickness was similar in POP group and control group(P>0.05).The cross-sectional area in POP group was larger than that of control group(P<0.05).In volume of the vagina,there was a significant difference between the two groups(P<0.05).The variations of vagina shape,which presented with asymmetry,were found in 60% POP patients.The change of vagina axis was not found.Conclusion MRI virtual reality technology is an effective method to observe morphology of vagina.There are no defects of vagina itself in POP patients,however,the variations of vagina shape in POP may be found.The MRI presentative characteristics of vagina morphology reflect the function and status of pelvic floor supporting tissues connected with the vagina indirectly.
出处
《临床军医杂志》
CAS
2010年第6期1021-1023,1094,共4页
Clinical Journal of Medical Officers
基金
福建省自然科学基金项目(2008J0297)
福建省科技创新平台项目(2010Y2005)
