Stereopsis-guided brain shift compensation
Stereopsis-guided brain shift compensation
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DOI：
10.1109/tmi.2005.852075
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发表时间：
2005-08-01
影响因子：
10.6
通讯作者：
Paulsen, KD
中科院分区：
文献类型：
--
作者：
Sun, H;Lunn, KE;Paulsen, KD
Brain deformation models have proven to be a powerful tool in compensating for soft tissue deformation during image-guided neurosurgery. The accuracy of these models can be improved by incorporating intraoperative measurements of brain motion. We have designed and implemented a passive intraoperative stereo vision system capable of estimating the three-dimensional shape of the surgical scene in near real-time. This intraoperative shape is compared with the cortical surface in the co-registered preoperative magnetic resonance (MR) volume for the estimation of the cortical motion resulting from the open cranial surgery. The estimated cortical motion is then used to guide a full brain model, which updates a preoperative MR volume. We have found that the stereo vision system is accurate to within approximately 1 mm. Based on data from two representative clinical cases, we show that stereopsis guidance improves the accuracy of brain shift compensation both at and below the cortical surface.
