基于MRI及CT融合技术的膝关节PCL影像重建初探

3D Reconstruction of PCL Based on MRI and CT Image Fusion

中文关键词:  后交叉韧带 影像融合 三维重建

英文关键词:Posterior cruciate ligament Image fusion 3D reconstruction

中文摘要:

      目的 探索采用磁共振成像（MRI）及计算机X线断层扫描（CT）影像融合技术重建带两端骨结构的后交叉韧带（PCL）的可行性及实施路径，为PCL损伤的个体化治疗提供影像学支持。方法 对12例正常青年男性膝关节行螺旋CT及MRI三维可快速自旋回波序列（SPACE）检查，将两组影像数据提取并统一坐标系后，在MRI上框选PCL的坐标，将数据提取并代入到CT数据中，最后在CT上实现包含邻近骨结构的PCL二维及三维可视化影像重建，并测量部分解剖数据。结果 12例研究对象中有2例在验证转化数据时发现误差较大，予排除；其余10例受试者均成功实现图像融合，重建出带邻近骨结构的二维及三维PCL影像，测量数据与实体解剖数据比较具有较高重合度。结论 利用CT及MRI影像融合技术三维可视化重建PCL方法可行，可为PCL的个体化治疗提供技术支持，但还可进一步简化及精确化。

英文摘要:

      Objective To reconstruct three-dimensional (3D) image of posterior cruciate ligament (PCL) based on MRI and CT image fusion. Methods CT and MRI scans were performed on 12 knees of young men. The Dicom data were extracted and unified. The outline of PCL on MRI imaging was drew and plugged into the CT data. Finally, the visible 3D image of PCL with adjacent bones was reconstructed. The imaging anatomical measurements were examined and compared with those in published literature. Results Two cases were excluded from this study because of data deviations. The 3D visible reconstruction of PCL was proved to be feasible on the other ten cases. Conclusion Three-dimensional visible reconstruction of PCL based on CT and MRI image fusion is feasible, which can provide support for individualized treatment of PCL injuries. Further simplification with increased accuracy may be needed.