In vivo pressure measurements of lithotripsy shock waves in pigs

Ultrasound in Medicine & Biology
Robin O ClevelandLawrence A Crum

Abstract

Stone comminution and tissue damage in lithotripsy are sensitive to the acoustic field within the kidney, yet knowledge of shock waves in vivo is limited. We have made measurements of lithotripsy shock waves inside pigs with small hydrophones constructed of a 25-microm PVDF membrane stretched over a 21-mm diameter ring. A thin layer of silicone rubber was used to isolate the membrane electrically from pig fluid. A hydrophone was positioned around the pig kidney following a flank incision. Hydrophones were placed on either the anterior (shock wave entrance) or the posterior (shock wave exit) surface of the left kidney. Fluoroscopic imaging was used to orient the hydrophone perpendicular to the shock wave. For each pig, the voltage settings (12-24 kV) and the position of the shock wave focus within the kidney were varied. Waveforms measured within the pig had a shape very similar to those measured in water, but the peak pressure was about 70% of that in water. The focal region in vivo was 82 mm x 20 mm, larger than that measured in vitro (57 mm x 12 mm). It appeared that a combination of nonlinear effects and inhomogeneities in the tissue broadened the focus of the lithotripter. The shock rise time was on the order of 100 ns, sub...Continue Reading

References

Nov 1, 1991·Physics in Medicine and Biology·R FinneyA C Baker
Oct 1, 1991·British Journal of Urology·S A Holmes, H N Whitfield
Apr 1, 1991·American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation·A P EvanJ E Lingeman
May 1, 1990·The Journal of the Acoustical Society of America·R A Smith, D R Bacon
Jan 1, 1989·International Journal of Colorectal Disease·B LestarR Kerremans
Jul 1, 1989·The Journal of the Acoustical Society of America·C C Church
Apr 1, 1988·Die Naturwissenschaften·M DeliusG Heine
Feb 1, 1987·Ultrasound in Medicine & Biology·M DeliusW Brendel
Feb 1, 1987·Ultrasound in Medicine & Biology·A J ColemanM Dyson
Aug 1, 1985·AJR. American Journal of Roentgenology·J V KaudeB Finlayson
Jan 1, 1985·The Journal of the Acoustical Society of America·H C StarrittV F Humphrey
Nov 1, 1994·The Journal of the Acoustical Society of America·T Christopher
Jan 1, 1994·The Journal of the Acoustical Society of America·D L Liu, R C Waag
Jan 1, 1996·Ultrasound in Medicine & Biology·A J ColemanJ E Saunders
Jan 1, 1997·Ultrasound in Medicine & Biology·D Howard, B Sturtevant
Jan 1, 1997·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·D Vilkomerson, D Lyons
Jan 1, 1997·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·D Vilkomerson, D Lyons
Jan 1, 1993·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Q ZhuR L Arenson
Jan 1, 1990·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·C W DaftW R O'Brien

❮ Previous
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Citations

Apr 5, 2008·Der Urologe. Ausg. A·K U KöhrmannJ Rassweiler
Sep 23, 2008·Biomechanics and Modeling in Mechanobiology·Kerstin Weinberg, Michael Ortiz
Aug 15, 2002·BJU International·D M Wilbert
Jan 25, 2003·Journal of Endourology·Dahlia L SokolovAndrew P Evan
Sep 27, 2006·Journal of Endourology·Bret A ConnorsJun Ying
Dec 7, 2013·Journal of Endourology·Guangyan LiZachary C Berwick
Feb 12, 2009·The Journal of the Acoustical Society of America·Wayne KreiderJeffrey A Ketterling
Nov 4, 2005·The Journal of the Acoustical Society of America·Robin O Cleveland, Oleg A Sapozhnikov
Mar 14, 2007·The Journal of the Acoustical Society of America·Oleg A SapozhnikovMichael R Bailey
Oct 9, 2003·The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology·Youzhi ShaoJames E Lingeman
Sep 24, 2005·Ultrasound in Medicine & Biology·Michael R BaileyAndrew P Evan
May 12, 2016·Ultrasound in Medicine & Biology·Jen-Chieh Wang, Yufeng Zhou
Feb 2, 2008·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·G R HarrisA S Dereggi
Jul 29, 2005·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Gerald R Harris
Jun 2, 2016·IEEE Reviews in Biomedical Engineering·Morteza GhorbaniAli Kosar
Jul 27, 1999·The Journal of the Acoustical Society of America·M A Averkiou, R O Cleveland
Jun 21, 2008·Ultrasonic Imaging·Gianmarco F Pinton, Gregg E Trahey
Apr 29, 2008·European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes·T TischerM Maier
Jan 20, 2004·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Johan Rockström
Nov 18, 2010·Journal of Speech, Language, and Hearing Research : JSLHR·Jennifer Horner, Fred D Minifie
Nov 18, 2010·Journal of Speech, Language, and Hearing Research : JSLHR·Jennifer Horner, Fred D Minifie
Sep 24, 2005·The American Journal of Bioethics : AJOB·Benjamin K Sovacool
Mar 31, 2010·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·T G Leighton, R O Cleveland
Mar 25, 2008·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Charles C ChurchMichael R Bailey
Feb 9, 2000·Journal of the American Society of Nephrology : JASN·Bret A ConnorsNaomi S Fineberg
Jun 20, 2008·Ultrasound in Medicine & Biology·T G LeightonP R White

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