Mary D A, North P J, Hunt J N
Am J Physiol. 1979 May;236(5):E545-9. doi: 10.1152/ajpendo.1979.236.5.E545.
A scanning esophageal probe for measuring luminal cross section is described. Current is injected into electrode assemblies so that a variable voltage output directly proportional to interelectrode impedance and inversely proportional to cross-sectional area of the medium around the electrodes may be measured. The device is capable of measuring the cross section of glass cylinders. It was used in one esophagus to measure the cross-sectional area of different sizes of swallowed bolus. The probe offers a safe and repeatable method of studying dynamic changes in luminal dimensions of the esophagus.
本文描述了一种用于测量管腔横截面的食管扫描探头。电流注入电极组件，以便测量与电极间阻抗成正比且与电极周围介质的横截面积成反比的可变电压输出。该装置能够测量玻璃圆柱体的横截面。它被用于一个食管，以测量不同大小吞咽食团的横截面积。该探头为研究食管管腔尺寸的动态变化提供了一种安全且可重复的方法。
