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激光成了良好的手术刀。这种器械不仅能对一切手术开刀,而且也有高度选择性。其特异性是可使激光穿过细胞或器官内部,而外部不受任何损伤——其中有些手术是任何外科医师所无能为力的。过去30年来,激光手术精度的改善已使激光医学应用迅速扩大。起初是用激光束产生的热量来破坏组织;现在,尽管在医疗手术中仍普遍使用热效应,但非热效应也证明对治疗和诊断有很大价值。除对组织加热外,激光束光子还能引起化学反应,破坏维系分子的原子键或
The laser has become a good scalpel. This device not only can surgery for all surgery, but also highly selective. The specificity is that it allows the laser to pass through the interior of a cell or organ without any damage to the outside - some of which are beyond the reach of any surgeon. The improvement in laser surgical accuracy over the past 30 years has led to the rapid expansion of laser medical applications. At first, tissue was destroyed by the heat generated by the laser beam; now, although thermal effects are still commonly used in medical procedures, non-thermal effects have proved to be of great value in treatment and diagnosis. In addition to heating the tissue, laser beam photons can also cause chemical reactions that destroy the atomic bonds of the maintaining molecule