基于MRI数据的人体器官三维重建

目的建立合适的人体器官三维数字化模型，为辐射剂量计算打下基础。方法采用符合4项准则的轮廓线重建算法建立人体器官三维数字化模型。先提取器官的轮廓，然后进行表面重建，最后通过合适的光照和法线求取、法线平均等处理，得到表面平滑、结构准确、可视性强的三维重建图像。结果和结论采用本文的方法，成功重建了人体多个器官的三维数字化模型。该方法适合于人体器官三维模型的建立，能满足剂量计算的需要。

Three-dimensional reconstruction of human organs based on magnetic resonance imaging data]

OBJECTIVE: To build proper three-dimensional models of human organs for radiation dose calculation. METHOD: Human organ models were built by contour reconstruction algorithm conforming to 4 criteria. The contours of the organs were extracted based on the contours of the reconstructed organ surfaces, and the three-dimensional models with smooth surface, exact structure and good visibility were completed by computer graphic techniques such as lighting, smoothing, and normal average. RESULT AND CONCLUSION: Several organ models were successfully reconstructed, suggesting that this method is suitable for building three-dimensional digital human organ models which can meet the need for dose calculation.