Burst wave lithotripsy is a method to noninvasively fragment urinary stones by short pulses of focused ultrasound. In this study, physical mechanisms of stone fracture during burst wave lithotripsy were investigated. Photoelasticity imaging was used to visualize elastic wave propagation in model stones and compare results to numerical calculations. Epoxy and glass stone models were made into rectangular, cylindrical, or irregular geometries and exposed in a degassed water bath to focused ultrasound bursts at different frequencies. A high-speed camera was used to record images of the stone during exposure through a circular polariscope backlit by a monochromatic flash source. Imaging showed the development of periodic stresses in the stone body with a pattern dependent on frequency. These patterns were identified as guided wave modes in cylinders and plates, which formed standing waves upon reflection from the distal surfaces of the stone model, producing specific locations of stress concentration in the models. Measured phase velocities compared favorably to numerically calculated modes dependent on frequency and material. Artificial stones exposed to bursts produced cracks at positions anticipated by this mechanism. These results support guided wave generation and reflection as a mechanism of stone fracture in burst wave lithotripsy.
Skip Nav Destination
An investigation of elastic waves producing stone fracture in burst wave lithotripsy
,
,
,
Article navigation
March 2020
March 13 2020
An investigation of elastic waves producing stone fracture in burst wave lithotripsy
Adam D. Maxwell;
Adam D. Maxwell
a)
1
Department of Urology, University of Washington School of Medicine
, 1959 Northeast Pacific Street, Seattle, Washington 98195, USA
Search for other works by this author on:
Brian MacConaghy;
Brian MacConaghy
2
Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington
, Seattle, Washington 98105, USA
Search for other works by this author on:
Michael R. Bailey;
Michael R. Bailey
2
Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington
, Seattle, Washington 98105, USA
Search for other works by this author on:
Oleg A. Sapozhnikov
Oleg A. Sapozhnikov
3
Department of Acoustics, Physics Faculty, Lomonosov Moscow State University
, Leninskie Gory, Moscow 119992, Russia
Search for other works by this author on:
Adam D. Maxwell
1,a)
Brian MacConaghy
2
Michael R. Bailey
2
Oleg A. Sapozhnikov
3
1
Department of Urology, University of Washington School of Medicine
, 1959 Northeast Pacific Street, Seattle, Washington 98195, USA
2
Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington
, Seattle, Washington 98105, USA
3
Department of Acoustics, Physics Faculty, Lomonosov Moscow State University
, Leninskie Gory, Moscow 119992, Russia
a)
Electronic mail: [email protected], ORCID: 0000-0001-5876-0545.
J. Acoust. Soc. Am. 147, 1607–1622 (2020)
Article history
Received:
October 10 2019
Accepted:
February 14 2020
Citation
Adam D. Maxwell, Brian MacConaghy, Michael R. Bailey, Oleg A. Sapozhnikov; An investigation of elastic waves producing stone fracture in burst wave lithotripsy. J. Acoust. Soc. Am. 1 March 2020; 147 (3): 1607–1622. https://doi.org/10.1121/10.0000847
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Focality of sound source placement by higher (ninth) order ambisonics and perceptual effects of spectral reproduction errors
Nima Zargarnezhad, Bruno Mesquita, et al.
A survey of sound source localization with deep learning methods
Pierre-Amaury Grumiaux, Srđan Kitić, et al.
Related Content
Modeling of photoelastic imaging of mechanical stresses in transparent solids mimicking kidney stones
J. Acoust. Soc. Am. (June 2020)
Maximizing mechanical stress in small urinary stones during burst wave lithotripsy
J. Acoust. Soc. Am. (December 2021)
Impact of stone type on cavitation in burst wave lithotripsy
Proc. Mtgs. Acoust. (December 2018)
Design of a transducer for fragmenting large kidney stones using burst wave lithotripsy
Proc. Mtgs. Acoust. (January 2019)
Tracking kidney stones in a homogeneous medium using a trilateration approach
J. Acoust. Soc. Am. (December 2017)