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微波是一种高频电磁波,频率为300～300000MHz,波长1～1000mm。自20世纪微波问世以来,60年代已应用于医学领域,80年代在肿瘤治疗中得到广泛应用。近年来,微波组织凝固(Microwave Tissue Coagulation MTC)在肝癌治疗中受到广泛重视和研究。本文就微波治疗肝癌作一综述。 1 微波治疗肿瘤的机制 1.1 微波对肿瘤细胞的损害:微波治疗肿瘤主要利用热效应。由于水是一种极性分子,介电常数大,当受微波辐射后能强烈吸收微波并转化为热能。生物组织含水量较高,尤其是肿瘤组织含水量可高达89%,而正常组织一般在65%
Microwave is a kind of high-frequency electromagnetic wave, the frequency is 300 ~ 300000MHz, the wavelength is 1 ~ 1000mm. Since the advent of microwave in the 20th century, the 1960s has been applied to the field of medicine, the 80’s in the treatment of cancer has been widely used. In recent years, microwave tissue coagulation (Microwave Tissue Coagulation MTC) in the treatment of liver cancer has received widespread attention and research. This article reviews microwave treatment of liver cancer. A mechanism of microwave treatment of cancer 1.1 Microwave damage to tumor cells: Microwave treatment of cancer mainly use thermal effects. Because water is a polar molecule with a large dielectric constant, it strongly absorbs microwaves and converts it into heat when exposed to microwave radiation. Higher water content of biological tissue, especially tumor tissue water content up to 89%, while normal tissue is generally 65%