胎儿心脏数字化三维模型构建

Reconstruction of a digital three-dimensional model of fetal heart

目的探讨构建胎儿心脏数字化三维模型的方法。方法选择因"心脏外畸形或染色体异常"引产的胎儿4例,从脐静脉注射混合有造影剂和铸型剂的灌注剂后行CT扫描获取原始二维断层图像数据集,利用Mimics 14.0软件构建胎儿心脏数字化三维模型。结果构建的胎儿心脏三维模型三维效果逼真,用不同颜色标记左心房、左心室、右心房、右心室、升主动脉及其分支、主肺动脉及其分支、上腔静脉和下腔静脉,可显示单一或多个结构,可在三维空间任意缩放、平移、任意旋轴任意角度旋转。此外,还可对各个血管进行管径测量。结论基于CT数据集,利用三维重建技术可构建出理想的胎儿心脏模型,对临床教学和解剖教学均具有重要意义。

Objective To explore the methods for constructing the digital three-dimensional model of fetal heart. Methods Original two-dimensional CT image data sets were collected from 4 abortion fetuses with fetal malformations but not heart malformation or chromosomal abnormalities. The three-dimensional fetal heart model was reconstructed using Mimics14.0 software. Results In the reconstructed three-dimensional fetal heart, the left atrium, left ventricle, right atrium, right ventricle, the ascending aorta, the main pulmonary and their branches, the superior cava and inferior vena cava were marked with different colors, and these structures could be displayed individually or with other structures. This model also allowed three-dimensional arbitrary scaling, shifting or rotation at any angle, and the diameter of the each vessel could be measured with the software. Conclusion The fetal heart model can be successfully reconstructed from the CT datasets using three-dimensional reconstruction software to facilitate clinical and anatomical teaching.