High-speed photographic evaluation of holmium laser
High-speed photographic evaluation of holmium laser
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DOI：
10.1089/end.1998.12.177
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发表时间：
1998-04-01
影响因子：
2.7
通讯作者：
Lingeman, JE
中科院分区：
文献类型：
--
作者：
Dushinski, JW;Lingeman, JE
关于钬激光碎石过程中结石碎裂的相对贡献和确切机制的信息很少，高速摄影已用于评估其他体内碎石设备，我们选择这种方法来评估钬激光。对四种纤维尺寸（200、365、550 和 1000 μm）产生的空化气泡的高速摄影评估显示最大气泡尺寸和纤维直径之间存在中等程度的相关性（1 J 脉冲 n = 0.71，4 J 脉冲 r = 0.80）。消除来自被侵蚀的 550 μm 光纤的数据后，1 J 脉冲的相关性增强为 r = 0.94，4 J 脉冲的相关性为 r = 0.99。由此证明了保持光纤尖端处于良好工作状态的重要性。还获得了激光对石头和粉笔的热效应的证据。在一项平行研究中，使用粉笔作为体外结石模型，发现纤维直径和结石破碎效率之间没有相关性（r = -0.08）。
Little information has been published regarding the relative contributions and exact mechanisms involved in stone fragmentation during holmium laser lithotripsy, High-speed photography has been used to evaluate other intracorporeal lithotripsy devices, and we chose this method to evaluate the holmium laser. High-speed photographic evaluation of cavitation bubbles produced by the four fiber sizes (200, 365, 550, and 1000 mu m) showed a moderate degree of correlation (n = 0.71 for 1 J pulses, r = 0.80 for 4 J pulses) between maximal bubble size and fiber diameter. Eliminating the data from the eroded 550 mu m fiber strengthened the correlation to r = 0.94 for 1 J pulses and r = 0.99 for 4 J pulses. The importance of keeping fiber tips in good working condition was thereby demonstrated. Evidence of a thermal effect of the laser on stone and chalk was also obtained. In a parallel study, no correlation (r = -0.08) was found between fiber diameter and stone fragmentation efficiency using chalk as an in vitro stone model.