Mechanisms of biliary stone fragmentation using the Ho:YAG laser
Mechanisms of biliary stone fragmentation using the Ho:YAG laser
复制标题
使用 Ho:YAG 激光破碎胆道结石的机制
DOI：
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发表时间：
1994
影响因子：
4.6
通讯作者：
R. Powell
中科院分区：
文献类型：
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作者：
S. Schafer;F. Durville;B. Jassemnejad;K. Bartels;R. Powell
作者研究了使用脉冲Ho：YAG激光的胆结石破碎，并将其与使用可见脉冲染料激光的碎石术进行了比较。他们发现，在这两种情况下，结石碎裂的物理机制似乎完全不同。使用高速摄影，测量声瞬态，时间分辨光发射光谱，和直接显微镜观察，作者分析了Ho：YAG激光与水和胆结石的相互作用。他们提出了一个新的模型，其中破碎开始于石头表面对激光的吸收。随后是石材的熔化和喷射，然后被水吸收Ho：YAG激光形成的蒸汽泡冲走。该模型与作者的实验观察非常一致，并且与P.Teng等人（1987）开发的使用可见脉冲染料激光的激光碎石术模型有很大不同。<<ETX>>
The authors have investigated the fragmentation of gallstones using the pulsed Ho:YAG laser, comparing it to lithotripsy using the visible pulsed-dye laser. They find that the physical mechanisms of stone fragmentation appear to be quite different in the two cases. Using high-speed photography, measurement of acoustic transients, time-resolved optical emission spectroscopy, and direct microscopic observation, the authors have analyzed the interaction of the Ho:YAG laser with both water and gallstones. They propose a new model in which fragmentation begins with absorption of the laser light by the stone surface. This is followed by melting and ejection of stone material, which is then swept away by the vapor bubble formed by the absorption of the Ho:YAG laser light by water. This model is in excellent agreement with the authors' experimental observations, and differs substantially from the model developed by P. Teng et al. (1987) for laser lithotripsy using the visible pulsed-dye laser.<<ETX>>