Browsing Duke Faculty Articles by Duke-affiliated Author "Simmons, Walter Neal"

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Effect of lithotripter focal width on stone comminution in shock wave lithotripsy

Qin, Jun; Simmons, Walter; Sankin, Georgii; Zhong, Pei (ACOUSTICAL SOC AMER AMER INST PHYSICS, 2010)

Using a reflector insert, the original HM-3 lithotripter field at 20 kV was altered significantly with the peak positive pressure (p(+)) in the focal plane increased from 49 to 87 MPa while the -6 dB focal width decreased ...
Optimization of Treatment Strategy Used During Shockwave Lithotripsy to Maximize Stone Fragmentation Efficiency

Yong, Daniel Z.; Simmons, Walter Neal; Lipkin, Michael Eric; Sankin, Georgii; Albala, David Mois; Zhong, Pei; Preminger, Glenn Michael (Journal of Endourology, 2011-09)

Background and Purpose: Previous studies have demonstrated that treatment strategy plays a critical role in ensuring maximum stone fragmentation during shockwave lithotripsy (SWL). We aimed to develop an optimal treatment ...