Abstract
To study the interaction between a stone and a cavitation jet during extracorporeal shock-wave lithotripsy (ESWL), we developed a model based on geometrical acoustics describing the impingement of a cavitation microjet on an elastic solid boundary and the subsequent propagation of the resultant shock waves in the solid. The model incorporated the acoustic and mechanical properties of different stone types to calculate the jet impact pressure at the stone surface and the stress and strain at the propagating shock fronts. This model was validated using stone phantoms in slab configuration fabricated to have comparable acoustic and mechanical properties to renal calculi. This chapter summarizes our efforts, both analytical and experimental, towards the understanding of stone fragmentation in extracorporeal shock wave lithotripsy.
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Chuong, C.J. (2003). Mechanics of Stone Fragmentation in Extracorporeal Shock-Wave Lithotripsy. In: Srivastava, R.C., Leutloff, D., Takayama, K., Grönig, H. (eds) Shock Focussing Effect in Medical Science and Sonoluminescence. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-05161-0_7
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DOI: https://doi.org/10.1007/978-3-662-05161-0_7
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