三维虚拟现实成像结合二维超声图像可视化评价婴幼儿髋关节发育不良  

Three-dimensional virtual reality imaging combined with two-dimensional ultrasound images for the visual evaluation of hip dysplasia in infants

作　　者：栗平[1] 张元智[1] 窦蕊[1] 郭志英[1] 

机构地区：[1]内蒙古医科大学第二附属医院超声科,内蒙古自治区呼和浩特市010030

出　　处：《中国组织工程研究》2014年第9期1398-1403,共6页Chinese Journal of Tissue Engineering Research

基　　金：内蒙古自然科学基金资助项目(2012MS1186);内蒙古自治区高等学校科学研究项目(NJZC12161)~~

摘　　要：背景:超声检查已广泛应用于婴幼儿发育性髋关节发育不良的筛查,但有报道指出,在不同的检查者之间检查结果存在显著差异,即使在同一检查者的重复检查中也会存在偏差,因此认为超声在诊断成像准确性方面证据不足。目的:通过三维重建虚拟现实图像显示髋臼及股骨头的空间立体结构,获得一个新的参数,从而丰富Graf超声诊断技术的测量标准,进一步增强髋关节发育不良诊断结果的可信度。方法:选取国人婴幼儿新鲜尸体标本10具(男性5具,女性5具),应用Graf二维超声法对髋关节扫查,并同时行多排螺旋CT三维重建,再将容积重建与表面重建拟合,显示髋关节周围解剖结构,模拟Graf二维超声法对三维虚拟现实图像进行a角和β角的测量。结果与结论:通过三维重建虚拟现实图像对二维Graf方法测量的验证,证实二维Graf方法测量α角和β角可以真实反映骨性髋臼和软骨髋臼的发育情况。Graf二维超声技术可对新生儿髋关节发育状况做出正确评价,可以将Graf二维超声法作为髋关节发育不良的常规检查。说明熟练掌握Graf超声检查技术和严格掌握髋关节发育不良评判标准是髋关节发育不良诊断的重要保障。BACKGROUND： Ultrasound has been widely used in developmental hip dysplasia screening in infants and young children, but there are significant differences among different inspection findings, even in the reexamination by the same examiner. Therefore, the accuracy of ultrasound imaging in the diagnosis is of insufficient evidence. OBJECTIVE： Through virtual reality three-dimensional reconstruction images showing the structure of acetabulum and femoral head space, to obtain a new parameter in order to enrich measurement standards of Graf ultrasonic diagnosis technology and to further improve the credibility of the diagnosis of developmental dysplasia of the hip. METHODS： Ten fresh cadaver specimens of Chinese infants were selected, including five males and five females. Two-dimensional ultrasonic method was employed for hip screening, and at the sametime, multi-slice spiral CT was used for three-dimensional reconstruction followed by volume reconstruction and fitting of surface reconstruction to display the anatomic structure around the hip and to simulate Graf＇s two-dimensional ultrasound method to measure a and 13 angles on three-dimensional virtual reality images. RESULTS AND CONCLUSION： As confirmed by three-dimensional reconstruction, Graf＇s two-dimensional ultrasound could be used to measure a and angles, truly reflecting the development of bony and cartilaginousacetabulum. Graf＇s two-dimensional ultrasound contributed to the proper evaluation of beonatal hip dysplasia, which can be used as a routine examination for developmental dysplasia of the hip. These indicate that to master Grafs ultrasound technology and strictly grasp the evaluation standards for developmental dysplasia of the hip is the important guarantee for diagnosis of developmental dysplasia of the hip.

关 键 词：植入物 数字化骨科 髋关节发育不良 Graf超声技术 三维虚拟现实图像 多排螺旋CT 三维重建 内蒙古自治区自然科学基金 

分 类 号：R318[医药卫生—生物医学工程]