Erol R A, Mangnall Y, Leathard A D, Smallwood R H, Brown B H, Cherian P, Bardhan K D
Department of Medical Physics and Clinical Engineering, University of Sheffield, Royal Hallamshire Hospital, UK.
Physiol Meas. 1995 Nov;16(4):253-61. doi: 10.1088/0967-3334/16/4/005.
Investigations have been carried out using the Sheffield mark II real-time EIT system, to look at changes in conductivity associated with swallowing. A ring of 16 electrodes was placed around the neck of 10 subjects, who then performed swallows with four liquids of different conductivities, ranging from water (sigma = 0.03 mS cm-1) to salty soup (sigma = 35.8 mS cm-1). Results showed that the conductive and non-conductive liquids could be distinguished. Bolus transit times were calculated from region of interest curves, and the average transit time for the 10 subjects was found to be 320 +/- 100 ms.
研究人员使用谢菲尔德Mark II型实时电阻抗断层成像（EIT）系统进行了调查，以观察与吞咽相关的电导率变化。在10名受试者的颈部放置了一个由16个电极组成的环，然后让他们用四种不同电导率的液体进行吞咽，电导率范围从水（σ = 0.03 mS/cm）到咸汤（σ = 35.8 mS/cm）。结果表明，可以区分导电液体和非导电液体。从感兴趣区域曲线计算出团块通过时间，发现10名受试者的平均通过时间为320±100毫秒。
