Griffiths H
INSERM U281, Lyon, France.
IEEE Trans Biomed Eng. 1995 Sep;42(9):948-54. doi: 10.1109/10.412664.
A method is proposed by which bioelectrical spectroscopy could be combined with electrical impedance tomography (EIT) to provide noninvasive characterization of tissue. Multifrequency (2-200 kHz) EIT measurements were simulated with a numerical model for a volume of porcine liver immersed in an electrolytic tank. From the reconstructed EIT images the tissue characterization method was then applied enabling a plot of complex resistivity to be drawn for any selected pixel in the image. Simulations were performed for a small volume of degraded tissue embedded in the normal tissue to examine its effect on the derived spectroscopic parameters. The method could have an application in transplant surgery for screening organs for tissue degradation.
提出了一种将生物电阻抗谱与电阻抗断层成像（EIT）相结合以实现组织无创表征的方法。使用浸没在电解槽中的猪肝脏体积的数值模型模拟了多频（2 - 200 kHz）EIT测量。然后应用组织表征方法从重建的EIT图像中绘制出图像中任何选定像素的复电阻率图。对嵌入正常组织中的少量退化组织进行了模拟，以检查其对导出的光谱参数的影响。该方法可应用于移植手术中筛选器官的组织退化情况。
