旋转VR后行MPR技术对肩关节斜冠位成像的应用评价

Evaluation of displaying of shoulder joint using oblique coronal multiplanar reformation on the basis of rotating the volume rendering image in multislice spiral CT

目的探讨在旋转容积再现图像的基础上运用多平面重组(multiplanar reformation based on rotated thevolume rendering image,VRMPR)技术对肩关节进行斜冠位成像的应用价值。方法搜集观察对象18例双侧肩关节,利用多层螺旋CT各向同性扫描进行检查,然后运用VRMPR技术重组出肩关节的斜冠状位图像。结果通过VRMPR技术均可获得肩关节的标准斜冠状位图像,32侧肩关节能在一个平面上显示肱骨与肩胛骨长轴面、关节间隙、关节面;4侧肩关节不能在一个平面上同时显示肱骨长轴面,与肱骨位置有关。结论 VRMPR技术能够对肩关节进行标准斜冠位重组,图像直观,操作简单,是对肩关节MPR成像的一种新方法。

Objective： To investigate the application value of the oblique coronal MPR on the basis of rotating the volume rendering image（VRMPR） for the displaying of shoulder joint.Methods： Eighteen shoulders were performed in volume scan by 16 multi-slice CT and in thin slice low contrast image reconstructions.Then all the source images were processed using VRMPR.Results： The oblique coronal images of shoulder joint were obtained by using VRMPR technique.Thirty-two of the 36 shoulders displayed the joint space,osteo-articular surface and the long axial of humerus and shoulder blade in one plane.Four shoulders were not demonstrated in one plane which were related to the location of humerus.Conclusion： VRMPR can display shoulder joint stereotypely,quickly and simply,which should be a new MPR technique for the displaying of shoulder joint.