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首页> 外文期刊>Biomedical signal processing and control >Tidal volume monitoring by a set of tetrapolar impedance measurements selected from the 16-electrodes arrangement used in electrical impedance tomography (EIT) technique. Calibration equations in a group of healthy males
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Tidal volume monitoring by a set of tetrapolar impedance measurements selected from the 16-electrodes arrangement used in electrical impedance tomography (EIT) technique. Calibration equations in a group of healthy males

机译：通过一组四极阻抗测量值监视潮气量，该四极阻抗测量值选自电阻抗层析成像（EIT）技术中使用的16电极布置。一组健康男性的校正方程式

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Previously, our research group obtained a set of calibration equations for being used by an electrical impedance tomograph (EIT). All equations transform the impedance changes into a measurable volume signal in a group of healthy males. The performance of EIT, using these equations, was acceptable for respiration monitoring. The EIT impedance changes were obtained from a set of 16-electrodes placed around the thoracic box at level of the sixth intercostal space. Each cycle of impedance measurements is ordered in a matrix (IEITM). Each IEITM's element depicts a configuration of 4-electrodes. Now, our main challenge is to replace the ELT's 16-electrodes by a 4-electrodes configuration. We analyzed the impedance changes obtained from each element and the volume determinations obtained by a pneumotachometer (gold standard) in order to determine the optimal 4-electrodes configuration. For each selected configuration a set of 20 calibration equations were obtained. The best results were obtained by using two 4-electrodes configurations. Both consisting in two adjacent electrodes for current injection and two electrodes for voltage detection.
机译：以前，我们的研究小组获得了一组校准方程，供电阻抗断层扫描仪（EIT）使用。所有方程式将一组健康男性的阻抗变化转换为可测量的音量信号。使用这些方程式的EIT性能对于呼吸监测来说是可以接受的。 EIT阻抗变化是从一组位于第六肋间水平的胸腔周围的16电极获得的。阻抗测量的每个周期都按矩阵（IEITM）排序。每个IEITM元素都描绘了4电极的配置。现在，我们的主要挑战是将ELT的16电极替换为4电极配置。为了确定最佳的4电极配置，我们分析了从每个元件获得的阻抗变化以及通过气压计（金标准）获得的体积确定值。对于每种选择的配置，获得了20个校准方程式的集合。通过使用两个4电极配置可获得最佳结果。两者都包含两个用于注入电流的相邻电极和两个用于检测电压的电极。

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