What is it about?

In this work, we have shown (without photothermal effects) that non-unison and self-intensified collapse of toroidal bubbles (not jet impact) with boosted shock wave emission near a stone surface holds the key to cavitation erosion in Holmium: YAG laser lithotripsy.

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Why is it important?

Cavitation erosion represents a new mechanism of stone damage that is distinctly different from the conventional photothermal ablation in Holmium: YAG laser lithotripsy. Cavitation erosion can be harnessed to enhance the efficiency of stone dusting in laser lithotripsy, which has become the treatment of choice for kidney stone patients.


I hope this work will encourage and promote more interdisciplinary, rigorous, and in-depth research regarding the mechanism of stone damage in laser lithotripsy beyond the conventional theory of photothermal ablation.

Pei Zhong
Duke University

Read the Original

This page is a summary of: Dissimilar cavitation dynamics and damage patterns produced by parallel fiber alignment to the stone surface in holmium:yttrium aluminum garnet laser lithotripsy, Physics of Fluids, March 2023, American Institute of Physics,
DOI: 10.1063/5.0139741.
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