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目的探讨利用磁共振成像(MRI)原始数据集构建孕晚期在体胎盘数字化三维模型的方法及意义。方法选取2014年6-9月因前置胎盘在南方医科大学南方医院行下腹盆腔MRI检查的孕晚期孕妇10例,用单次激发快速自旋回波T2加权序列进行扫描,采集其原始Dicom数据集并导入Mimics 10.01软件中进行胎盘数字化三维重建。结果成功构建出在体胎盘三维模型,该模型可以直观、立体地显示胎盘整体结构,可以从任意角度展示胎盘与子宫的相对位置关系,并可对胎盘边缘与宫颈内口及耻骨联合上缘的距离、胎盘植入范围等进行测量。结论基于MRI数据集可以构建在体胎盘数字化三维模型,具有立体感强、形态真、可多角度观察等优点,是一种研究在体胎盘的新方法,具有一定的应用前景。
Objective To explore the method and significance of constructing a digitalized three-dimensional model of placenta in the third trimester of pregnancy by using magnetic resonance imaging (MRI) raw data set. Methods From September to September 2014, 10 pregnant women of the third trimester who had undergone abdominal pelvic MRI examination at the Southern Hospital of Southern Medical University from January 2014 to September 2014 were selected and scanned with one-shot MRT T2-weighted sequence. The original Dicom data set And imported into Mimics 10.01 software to digitally reconstruct the placenta. Results The three-dimensional model of placenta in vivo was successfully constructed. The model can display the overall structure of the placenta visually and stereoscopically. It can show the relative position of the placenta and the uterus from any angle. The placenta and the upper edge of the pubic symphysis Distance, placenta accreta range, etc. were measured. Conclusion Based on the MRI data set, a digital three-dimensional model of placenta can be constructed, which has the advantages of strong stereopsis, true morphology and multi-angle observation. It is a new method to study placenta in vivo and has certain application prospect.