Acoustic shielding by cavitation bubbles in Shock Wave Lithotripsy (SWL)

Yuri A. Pishchalnikov, James A. McAteer, Michael R. Bailey, Irina V. Pishchalnikova, James Williams, Andrew Evan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

Lithotripter pulses (∼7-10 μs) initiate the growth of cavitation bubbles, which collapse hundreds of microseconds later. Since the bubble growth-collapse cycle trails passage of the pulse, and is ∼1000 times shorter than the pulse interval at clinically relevant firing rates, it is not expected that cavitation will affect pulse propagation. However, pressure measurements with a fiber-optic hydrophone (FOPH-500) indicate that bubbles generated by a pulse can, indeed, shield the propagation of the negative tail. Shielding was detected within 1 μs of arrival of the negative wave, contemporaneous with the first observation of expanding bubbles by high-speed camera. Reduced negative pressure was observed at 2 Hz compared to 0.5 Hz firing rate, and in water with a higher content of dissolved gas. We propose that shielding of the negative tail can be attributed to loss of acoustic energy into the expansion of cavitation bubbles.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages319-322
Number of pages4
Volume838
DOIs
StatePublished - 2006
EventINNOVATIONS IN NONLINEAR ACOUSTICS - ISNA17: 17th International Symposium on Nonlinear Acoustics including the International Sonic Boom Forum - State College, PA, United States
Duration: Jul 18 2005Jul 22 2005

Other

OtherINNOVATIONS IN NONLINEAR ACOUSTICS - ISNA17: 17th International Symposium on Nonlinear Acoustics including the International Sonic Boom Forum
CountryUnited States
CityState College, PA
Period7/18/057/22/05

Fingerprint

cavitation flow
shielding
shock waves
bubbles
acoustics
pulses
dissolved gases
propagation
high speed cameras
hydrophones
pressure measurement
arrivals
fiber optics
intervals
cycles
expansion
water
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Pishchalnikov, Y. A., McAteer, J. A., Bailey, M. R., Pishchalnikova, I. V., Williams, J., & Evan, A. (2006). Acoustic shielding by cavitation bubbles in Shock Wave Lithotripsy (SWL). In AIP Conference Proceedings (Vol. 838, pp. 319-322) https://doi.org/10.1063/1.2210369

Acoustic shielding by cavitation bubbles in Shock Wave Lithotripsy (SWL). / Pishchalnikov, Yuri A.; McAteer, James A.; Bailey, Michael R.; Pishchalnikova, Irina V.; Williams, James; Evan, Andrew.

AIP Conference Proceedings. Vol. 838 2006. p. 319-322.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pishchalnikov, YA, McAteer, JA, Bailey, MR, Pishchalnikova, IV, Williams, J & Evan, A 2006, Acoustic shielding by cavitation bubbles in Shock Wave Lithotripsy (SWL). in AIP Conference Proceedings. vol. 838, pp. 319-322, INNOVATIONS IN NONLINEAR ACOUSTICS - ISNA17: 17th International Symposium on Nonlinear Acoustics including the International Sonic Boom Forum, State College, PA, United States, 7/18/05. https://doi.org/10.1063/1.2210369
Pishchalnikov YA, McAteer JA, Bailey MR, Pishchalnikova IV, Williams J, Evan A. Acoustic shielding by cavitation bubbles in Shock Wave Lithotripsy (SWL). In AIP Conference Proceedings. Vol. 838. 2006. p. 319-322 https://doi.org/10.1063/1.2210369
Pishchalnikov, Yuri A. ; McAteer, James A. ; Bailey, Michael R. ; Pishchalnikova, Irina V. ; Williams, James ; Evan, Andrew. / Acoustic shielding by cavitation bubbles in Shock Wave Lithotripsy (SWL). AIP Conference Proceedings. Vol. 838 2006. pp. 319-322
@inproceedings{73f792da86824445adc872739ef3ad6a,
title = "Acoustic shielding by cavitation bubbles in Shock Wave Lithotripsy (SWL)",
abstract = "Lithotripter pulses (∼7-10 μs) initiate the growth of cavitation bubbles, which collapse hundreds of microseconds later. Since the bubble growth-collapse cycle trails passage of the pulse, and is ∼1000 times shorter than the pulse interval at clinically relevant firing rates, it is not expected that cavitation will affect pulse propagation. However, pressure measurements with a fiber-optic hydrophone (FOPH-500) indicate that bubbles generated by a pulse can, indeed, shield the propagation of the negative tail. Shielding was detected within 1 μs of arrival of the negative wave, contemporaneous with the first observation of expanding bubbles by high-speed camera. Reduced negative pressure was observed at 2 Hz compared to 0.5 Hz firing rate, and in water with a higher content of dissolved gas. We propose that shielding of the negative tail can be attributed to loss of acoustic energy into the expansion of cavitation bubbles.",
author = "Pishchalnikov, {Yuri A.} and McAteer, {James A.} and Bailey, {Michael R.} and Pishchalnikova, {Irina V.} and James Williams and Andrew Evan",
year = "2006",
doi = "10.1063/1.2210369",
language = "English",
isbn = "0735403309",
volume = "838",
pages = "319--322",
booktitle = "AIP Conference Proceedings",

}

TY - GEN

T1 - Acoustic shielding by cavitation bubbles in Shock Wave Lithotripsy (SWL)

AU - Pishchalnikov, Yuri A.

AU - McAteer, James A.

AU - Bailey, Michael R.

AU - Pishchalnikova, Irina V.

AU - Williams, James

AU - Evan, Andrew

PY - 2006

Y1 - 2006

N2 - Lithotripter pulses (∼7-10 μs) initiate the growth of cavitation bubbles, which collapse hundreds of microseconds later. Since the bubble growth-collapse cycle trails passage of the pulse, and is ∼1000 times shorter than the pulse interval at clinically relevant firing rates, it is not expected that cavitation will affect pulse propagation. However, pressure measurements with a fiber-optic hydrophone (FOPH-500) indicate that bubbles generated by a pulse can, indeed, shield the propagation of the negative tail. Shielding was detected within 1 μs of arrival of the negative wave, contemporaneous with the first observation of expanding bubbles by high-speed camera. Reduced negative pressure was observed at 2 Hz compared to 0.5 Hz firing rate, and in water with a higher content of dissolved gas. We propose that shielding of the negative tail can be attributed to loss of acoustic energy into the expansion of cavitation bubbles.

AB - Lithotripter pulses (∼7-10 μs) initiate the growth of cavitation bubbles, which collapse hundreds of microseconds later. Since the bubble growth-collapse cycle trails passage of the pulse, and is ∼1000 times shorter than the pulse interval at clinically relevant firing rates, it is not expected that cavitation will affect pulse propagation. However, pressure measurements with a fiber-optic hydrophone (FOPH-500) indicate that bubbles generated by a pulse can, indeed, shield the propagation of the negative tail. Shielding was detected within 1 μs of arrival of the negative wave, contemporaneous with the first observation of expanding bubbles by high-speed camera. Reduced negative pressure was observed at 2 Hz compared to 0.5 Hz firing rate, and in water with a higher content of dissolved gas. We propose that shielding of the negative tail can be attributed to loss of acoustic energy into the expansion of cavitation bubbles.

UR - http://www.scopus.com/inward/record.url?scp=33846008048&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846008048&partnerID=8YFLogxK

U2 - 10.1063/1.2210369

DO - 10.1063/1.2210369

M3 - Conference contribution

SN - 0735403309

SN - 9780735403307

VL - 838

SP - 319

EP - 322

BT - AIP Conference Proceedings

ER -