Gaggero Pascal O, Adler Andy, Waldmann Andreas D, Mamatjan Yasin, Justiz Jörn, Koch Volker M
Institute for Human Centered Engineering, Bern University of Applied Sciences, Biel/Bienne, Switzerland.
Physiol Meas. 2015 Jun;36(6):1227-44. doi: 10.1088/0967-3334/36/6/1227. Epub 2015 May 26.
An automated test system and procedure is proposed, designed to enable systematic testing of electrical impedance tomography (EIT) devices. The system is designed to calculate reliable, repeatable and accurate performance figures of merit of an EIT system using a saline phantom and an industrial robot arm. Applications of the test system are to compare EIT devices against requirements, or to help optimize a device for its operating parameters. A test methodology and sample test results are presented to illustrate its use. The system is used to compare image quality and contrast detection for a range of stimulation and measurement patterns, and results show the best images when the pair of current injection electrodes is spaced between 45 and 170 degrees on a tank. Finally, we propose a classification of the object detection errors, which can facilitate comparison of EIT instrument specifications.
提出了一种自动化测试系统及程序，旨在对电阻抗断层成像（EIT）设备进行系统测试。该系统旨在使用盐水模型和工业机器人手臂来计算EIT系统可靠、可重复且准确的性能指标。该测试系统的应用包括将EIT设备与要求进行比较，或帮助优化设备的运行参数。给出了一种测试方法及样本测试结果以说明其用途。该系统用于比较一系列激励和测量模式下的图像质量和对比度检测，结果表明，当一对电流注入电极在水箱上的间距在45度至170度之间时，图像效果最佳。最后，我们提出了一种目标检测误差分类方法，这有助于比较EIT仪器的规格。
