DISADVANTAGES OF ARGON LASERS FOR ANGIOPLASTY

执行这项工作是为了帮助定义与 动物体内最常用的激光光源--Ar离子激光器 以及用于血管内组织消融的人体研究。氩气激光器是 在空气、血液、盐分和盐分血液混合物中进行研究，试图 明确组织消融和吸收热融合的机制 特点。采用了统一的方法，包括仔细 利用外膜进行眼部显微测量和热像分析 机械热电偶和快速红外表面热像仪。我们发现 Ar激光引起非均匀大步爆炸汽化 组织紧随其后的是组织燃烧，这与明显的放射状 热扩散。Ar激光似乎是一个不利的来源 血管成形术缺乏精确度，消融术中存在明显的变异性 影响，以及广泛的热扩散到分类周围的正常组织。

This work was performed to help define the characteristics associated with argon ion lasers which are the most frequently used laser source in animal and human research for intravascular tissue ablation. Argon lasers were studied in air, blood, saline, and saline blood mixtures in an attempt to define the mechanism of tissue ablation and sorrounding thermal difusion characteristics. A uniform methodology was employed including careful ocular michrometry and thermographic analyses utilizing adventitial mechanical thermocouples and fast infra-red surface thermography. We found that argon lasers cause nonuniform large-step explosive vaporization of tissue followed by tissue combustion which is associated with marked radial thermal diffusion. Argon lasers appear to be a disadvantageous source for angioplasty given the lack of precision, marked variability in ablative effects, and widespread thermal diffusion to sorrounding normal tissues.