Van Roost D, Schaller C, Meyer B, Schramm J
Neurochirurgische Universitätsklinik, Bonn, Deutschland.
Stereotact Funct Neurosurg. 1997;69(1-4 Pt 2):239-42. doi: 10.1159/000099881.
Tailored selective amygdalohippocampal resections seem to be an interesting application for neuronavigation. The accuracy of freehand frameless neuronavigation was assessed in 28 patients for its ability to determine the hippocampal resection length, as compared to postoperative MRI. Brain collapse due to CSF displacement caused an expected error of navigation at the brain surface, but almost no error at the tentorial notch. Yet, the hippocampal resection length was overestimated by navigation to an extent of 3 +/- 2 mm. The discrepancy is explained by an anterior-posterior component of brain collapse in a tilted head. Horizontal positioning of the head or navigational marking prior to the occurrence of brain collapse may overcome the problem.
量身定制的选择性杏仁核海马切除术似乎是神经导航的一个有趣应用。在28例患者中评估了徒手无框架神经导航在确定海马切除长度方面的准确性，并与术后MRI进行了比较。脑脊液移位导致的脑塌陷在脑表面引起了预期的导航误差，但在小脑幕切迹处几乎没有误差。然而，神经导航对海马切除长度的估计高估了3±2毫米。这种差异是由倾斜头部时脑塌陷的前后分量造成的。在脑塌陷发生之前将头部水平定位或进行导航标记可能会克服这个问题。
