Abstract

The tissue-heating effect of radiofrequency and microwave radiation is used in diathermy treatments of soft-tissue injuries and inflammation, it can be employed for the rapid thawing of cryopreserved organs, and it forms the basis of hyperthermia as a cancer therapy. The fact that different tissues and organs exhibit different dielectric properties has also led to the development of electrical impedance tomography, which amongst other applications might lead to radiofrequency and microwave radiation being used for the dielectric imaging of tumours, and also as a non-invasive monitor of the heating effect of hyperthermia. Progress in the effective use of electromagnetic hyperthermia and dielectric imaging is greatly aided by the availability of phantoms that, as far as possible, simulate the electrical and thermal properties of human tissue.

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