Robillard M, Chive M, Leroy Y, Audet J, Pichot C, Bolomey J C
J Microw Power. 1982 Jun;17(2):97-105.
In this paper, we study the problem of the interpretation of the signals provided by microwave thermography, which allows the detection of the thermal gradients in living tissues. These signals correspond to the thermal noise measured by a radiometer when the probe scans the surface of the tissues (passive process). We describe how these signals can be computed by means of a new method based on the antenna reciprocity principle. This process requires a knowledge of the electrical field distribution in the lossy medium when the applicator is radiating a microwave signal (active process). Examples of computations of the thermal signals and experimental verifications are presented. Then, we introduce a new concept of 'thermal signature' and show how it is possible to reach a quantitative interpretation of the thermal signals such as those obtained in clinical investigations (thermal pattern recognition).
在本文中，我们研究了微波热成像所提供信号的解释问题，微波热成像能够检测活体组织中的热梯度。这些信号对应于当探头扫描组织表面时辐射计测量到的热噪声（被动过程）。我们描述了如何通过一种基于天线互易原理的新方法来计算这些信号。这个过程需要了解当施加器辐射微波信号时（主动过程）有损耗介质中的电场分布。文中给出了热信号计算的示例以及实验验证。然后，我们引入了“热特征”的新概念，并展示了如何对热信号进行定量解释，比如在临床研究中获得的那些热信号（热模式识别）。
