A New Brain-Shift Model for Neurosurgery

本研究的目的是利用脑移位模型方便地进行术中脑移位矫正。术中脑移位的预测揭示了脑深部结构在解剖和功能上的变形。我们的脑转移模型是通过测量患者手术前后的脑转移，使用三维形变模型的方法来构建的。我们仅采用神经外科手术中常用的额颞部(翼点)入路。我们检验了我们的脑移位模型预测的脑变形与术中CT获得的脑变形的比较，以检验我们的模型的准确性和实用性。校正后的术前CT图像与术中CT图像具有较高的符合率。未来的改进和患者数据的积累可能有助于开发一种更可靠的脑移位矫正方法，该方法考虑到其他结构的变形，如联合纤维。

The purpose of this study is convenient intraoperative correction of brain shift using brain shift model. Intraoperative prediction of brain shift reveals brain deformation of deep brain structures anatomically and functionally. Our brain shift model is constructed by measuring the fact patient brain shift between pre-operation and post-operation, using 3D-deformation model method. We applied only fronto-temporal (pterional) approach frequently used in neurosurgery operation. We examined the comparison of predicted deformation brain by our brain shift model and the brain obtained from intraoperative CT to inspect the accuracy and usefulness of our model. The corrected preoperative CT and intraoperative CT images had high concordance rate. Future improvements and accumulation of patient data may assist in developing a more reliable method for brain shift correction that considers deformation of other structures such as association fibers.