高频治疗机治疗原理

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                    <section><section powered-by="gulangu"><section><section> <section> <section powered-by="gulangu"><section><section><p>治疗原理</p></section></section></section> </section> </section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;通过物理加温杀灭肿瘤细胞的方法称为热疗。热疗的方法有高频电磁波、超声波、微波、热灌注等，高频电磁波是其中一种热疗方法。特别是用于治疗恶性肿瘤，它已成为继手术 、放疗、化疗后的又一种有效的治疗肿瘤的方法。</p><p>&nbsp; &nbsp; &nbsp; &nbsp;由于肿瘤组织血管结构不健全，血流量低，血流缓慢，肿瘤细胞乏O2，乳酸堆积，PH值降低，微环境发生改变。高频电磁波作为一种热源对肿瘤局部加热后散热缓慢产生热聚集，使肿瘤区温度高于正常组织4~6 ℃，这一温度差对肿瘤细胞造成热损伤，引起肿瘤细胞脱氧核糖核酸（DNA）、核糖核酸（RNA）破坏，蛋白质合成抑制，细胞膜破裂，导致细胞凋亡，所以热疗时正常组织可以不受损伤，而肿瘤细胞则受损伤。</p><p>&nbsp; &nbsp; &nbsp; &nbsp;另外通过加热使肿瘤的血流量增加，使肿瘤中心的乏氧细胞进一步氧合，增加肿瘤细胞对放射线的敏感性，配合放疗可消灭肿瘤，降低肿瘤的复发率。温度升高时许多化疗药物的毒性增强，对肿瘤细胞的杀伤作用也增强，某些耐药性细胞在加热并与药物合用时，细胞重新对此药敏感，从而提高了化疗的疗效。术前进行热放疗或热化疗有利于提高切除率，减少术后肿瘤细胞种植而造成复发。对正常组织进行加热可促进血液循环，增强血液循环、改善局部代谢、降低肌肉及结缔组织的张力，增强白细胞的吞噬能力、调节免疫功能等作用。</p></section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section> <section powered-by="gulangu"><section><section><p>欢</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>迎</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>关</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>注</p></section></section></section> </section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section> <section powered-by="gulangu"><section><section><p><img src="image/20201019/06951887dcea943058c73b993fc1013f_1.jpg" /></p></section></section></section> </section><section> <section powered-by="gulangu"><section><section> </section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>关注我们</p><p>一起涨姿势！</p></section></section></section> </section></section></section></section>