Keller Crystal M, McNeill Dawn, Piper Jill T, Sinha Saurabh R
a Neurodiagnostic Laboratory Duke University Medical Center , Durham , North Carolina.
Neurodiagn J. 2018;58(3):164-173. doi: 10.1080/21646821.2018.1491173.
Subtemporal electrode chains are part of the international 10-10 system. Since 2012, they have been routinely used at our institution in adult patients with intractable epilepsy who are undergoing video EEG evaluation for epilepsy surgery. In 2016, this was extended to the pediatric population. However, there are few data regarding the utility of these electrodes. We performed a retrospective study to investigate the sensitivity and specificity for detection and lateralization of an ictal EEG pattern in patients with temporal lobe epilepsy. Neurophysiologists and EEG technologists were randomly shown samples containing interictal EEG or ictal patterns in standard biploar montage (anterior-posterior bipolar with international 10-20 electrodes only), modified bipolar montage with subtemporal chains, or modified bipolar montage with T1 and T2 electrodes added. Subtemporal chains improved sensitivity compared with standard bipolar, but they also reduced the specificity. T1 and T2 electrodes showed a nonsignificant trend towards improved sensitivity and specificity compared with standard bipolar. There was no difference in sensitivity for correct lateralization among the three montages.
颞下电极链是国际10-10系统的一部分。自2012年以来，它们在我们机构中被常规用于接受癫痫手术视频脑电图评估的难治性癫痫成年患者。2016年，这一应用扩展到了儿科患者群体。然而，关于这些电极效用的数据很少。我们进行了一项回顾性研究，以调查颞叶癫痫患者发作期脑电图模式检测和定位的敏感性和特异性。神经生理学家和脑电图技术人员被随机展示包含发作间期脑电图或发作期模式的样本，这些样本采用标准双极导联（仅使用国际10-20电极的前后双极导联）、带有颞下电极链的改良双极导联或添加了T1和T2电极的改良双极导联。与标准双极导联相比，颞下电极链提高了敏感性，但也降低了特异性。与标准双极导联相比，T1和T2电极在敏感性和特异性提高方面呈现出不显著的趋势。三种导联在正确定位的敏感性方面没有差异。
