Impact of Soft Tissue Heterogeneity on Augmented Reality for Liver Surgery
Impact of Soft Tissue Heterogeneity on Augmented Reality for Liver Surgery
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DOI：
10.1109/tvcg.2014.2377772
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发表时间：
2015-05-01
影响因子：
5.2
通讯作者：
Berger, Marie-Odile
中科院分区：
文献类型：
--
作者：
Haouchine, Nazim;Cotin, Stephane;Berger, Marie-Odile
提出了一种在微创肝脏手术中实现肝脏内部结构实时增强现实的方法。通过术前CT扫描计算出的血管和肿瘤可以覆盖在腹腔镜观上，以供手术指导。与目前的方法相比，我们的方法能够基于实时生物力学模型的局部三维肝组织运动来定位肿瘤的深度位置。该模型允许适当地处理内部结构的运动，即使在各向异性或异质组织的情况下，就像肝脏和许多解剖结构的情况一样。在体模肝脏上进行的实验允许测量增强的准确性，而在真实手术期间对活体人体肝脏进行的实时增强显示了这种方法在微创手术中的好处。
This paper presents a method for real-time augmented reality of internal liver structures during minimally invasive hepatic surgery. Vessels and tumors computed from pre-operative CT scans can be overlaid onto the laparoscopic view for surgery guidance. Compared to current methods, our method is able to locate the in-depth positions of the tumors based on partial three-dimensional liver tissue motion using a real-time biomechanical model. This model permits to properly handle the motion of internal structures even in the case of anisotropic or heterogeneous tissues, as it is the case for the liver and many anatomical structures. Experimentations conducted on phantom liver permits to measure the accuracy of the augmentation while real-time augmentation on in vivo human liver during real surgery shows the benefits of such an approach for minimally invasive surgery.