Locating chronically implanted subdural electrodes using surface reconstruction
Locating chronically implanted subdural electrodes using surface reconstruction
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DOI：
10.1016/j.clinph.2005.03.027
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发表时间：
2005-08-01
影响因子：
4.7
通讯作者：
Towle, VL
中科院分区：
文献类型：
--
作者：
Hunter, JD;Hanan, DM;Towle, VL
目的：为了确定定位硬膜下电极的准确性，通过3-D表面渲染的CT scans.Methods：开源软件已经开发并张贴在网络上的分段成3-D表面的电极，并允许他们的3-D位置被导出到其他EEG分析程序。该技术的准确性是通过研究植入在4名癫痫患者的410个硬膜下电极来确定的。通过比较来自渲染分析的位置与通过常规分析其在单个CT切片上的外观确定的相同电极的位置来确定准确度。在一项研究中，由三名观察者对四名患者的410个电极重复成像两次，平均准确率为0.91（+/- 0.41）mm，最大误差为3.3 mm，约为电极直径的一半。结论：通过使用3-D渲染，可以在高分辨率CT扫描中轻松快速地确定硬膜下电极的位置。意义：这种确定硬膜下电极位置的相对快速和简单的方法应有助于其在临床和研究调查中的使用。(c)2005年由Elsevier爱尔兰有限公司代表国际临床神经生理学联合会出版。
Objective: To determine the accuracy of locating subdural electrodes by means of 3-D surface rendering of CT scans.Methods: Open source software has been developed and posted on the web which segments the electrodes into 3-D surfaces and allows their 3-D locations to be exported to other EEG analysis programs. The accuracy of the technique was determined by studying 410 subdural electrodes implanted in four epilepsy patients. Accuracy was determined by comparing the locations from the rendering analysis to the locations of the same electrodes determined by conventional analysis of their appearance on individual CT slices.Results: The average accuracy of a study of 410 electrodes imaged in four patients repeated two times by three observers was 0.91 (+/- 0.41) mm, with a maximum error of 3.3 mm, about half of the diameter of an electrode.Conclusions: The location of subdural electrodes can easily and quickly be determined within high-resolution CT scans through the use of 3-D rendering.Significance: This relatively fast and easy method for determining the location of subdural electrodes should facilitate their use in both clinical and research investigations. (c) 2005 Published by Elsevier Ireland Ltd. on behalf of International Federation of Clinical Neurophysiology.