Hughes T A, Liu P, Griffiths H, Lawrie B W, Wiles C M
Department of Medicine (Neurology), University Hospital of Wales, Heath Park, Cardiff, UK.
Physiol Meas. 1994 May;15 Suppl 2a:A199-209. doi: 10.1088/0967-3334/15/2a/025.
Electrical impedance tomography can be used to record the conductivity change occurring in the neck during a swallow. X-ray videofluoroscopy provides excellent anatomical detail of the structures involved in swallowing and of the position of the swallowed bolus. The two techniques have been performed simultaneously on seven patients with swallowing problems to establish what produces the peak change in conductivity when a solution of low conductivity is swallowed. The results suggest that the exclusion of air from the larynx and pharynx is the major factor influencing the change in conductivity when a solution of low conductivity is swallowed.
电阻抗断层成像技术可用于记录吞咽过程中颈部发生的电导率变化。X射线电视荧光透视检查能提供吞咽过程中所涉及结构以及吞咽食团位置的出色解剖细节。已对7名有吞咽问题的患者同时进行了这两种技术的操作，以确定吞咽低电导率溶液时产生电导率峰值变化的原因。结果表明，吞咽低电导率溶液时，喉和咽内空气的排出是影响电导率变化的主要因素。
