电阻抗作为人体立体定向手术中的一种定位方法。

Electrical impedance as a locating method in human stereotactic surgery.

作者信息

Mori K, Iwayama K, Ito M, Shimabukuro H, Handa H

出版信息

Appl Neurophysiol. 1976;39(3-4):216-21. doi: 10.1159/000102497.

Abstract

During stereotactic surgery, electrical impedance was measured by means of a roving electrode technique with a sine wave current of 10 kc. Impedance showed a characteristic decrease when the electrode was passing through the thalamus and consequently the impedance profile corresponding to the thalamic area exhibited the characteristic shape of a 'frying pan'. By observing the impedance, it is possible to differentiate the thalamic gray matter from the surrounding structures with some accuracy.

摘要

在立体定向手术中，采用游动电极技术，以10千周的正弦波电流测量电阻抗。当电极穿过丘脑时，电阻抗呈现出特征性下降，因此对应丘脑区域的电阻抗图谱呈现出“煎锅”的特征形状。通过观察电阻抗，可以较为准确地将丘脑灰质与周围结构区分开来。