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目的:构建膝关节关节软骨的三维模型,为开展膝关节数字医学研究进行模型构建的探索。方法:人体成年新鲜膝关节标本1例,行CT、MRI扫描,利用三维重建软件Mimics及逆向工程软件Geomagic对图像进行三维重建及图像配准,构建膝关节骨、关节软骨结构。结果:利用Mimics 10.01软件构建关节软骨的三维模型,并形成骨-关节软骨复合模型,导入Geomagic软件中与CT构建的骨三维模型相配准,再次导入CT影像中进行逐层微修饰,验证关节软骨分割效果。最终建立具有骨、关节软骨的三维膝关节模型。结论:三维图像重建技术与图像配准技术可将CT、MRI图像两者结合起来,发挥其各自优势,构建出形态较好的膝关节三维模型。
Objective: To construct the three-dimensional model of articular cartilage of knee joint and to explore the model construction of knee joint digital medical research. Methods: One adult adult fresh knee specimen was scanned by CT and MRI. Three-dimensional reconstruction and image registration were performed by using three-dimensional reconstruction software Mimics and reverse engineering software Geomagic to construct the knee and joint cartilage structures. Results: The three-dimensional model of articular cartilage was constructed by Mimics 10.01 software and the composite model of osteo-articular cartilage was established. The model was imported into Geomagic software and matched with the three-dimensional model of bone constructed by CT. Then the images were re-introduced into CT images for micro- Split effect. Finally, a three-dimensional knee model with bone and articular cartilage is established. Conclusion: Three-dimensional image reconstruction technology and image registration technology can combine CT and MRI images to exert their respective advantages and construct a good shape three-dimensional model of knee joint.