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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
4
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pubmed:dateCreated |
2008-12-9
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pubmed:abstractText |
The shock-induced collapse of a pre-existing nucleus near a solid surface in the focal region of a lithotripter is investigated. The entire flow field of the collapse of a single gas bubble subjected to a lithotripter pulse is simulated using a high-order accurate shock- and interface-capturing scheme, and the wall pressure is considered as an indication of potential damage. Results from the computations show the same qualitative behavior as that observed in experiments: a re-entrant jet forms in the direction of propagation of the pulse and penetrates the bubble during collapse, ultimately hitting the distal side and generating a water-hammer shock. As a result of the propagation of this wave, wall pressures on the order of 1 GPa may be achieved for bubbles collapsing close to the wall. The wall pressure decreases with initial stand-off distance and pulse width and increases with pulse amplitude. For the stand-off distances considered in the present work, the wall pressure due to bubble collapse is larger than that due to the incoming shockwave; the region over which this holds may extend to ten initial radii. The present results indicate that shock-induced collapse is a mechanism with high potential for damage in shockwave lithotripsy.
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pubmed:grant |
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-10943929,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-11397533,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-12079703,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-12394761,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-12401391,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-12786557,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-14565872,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-1595133,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-16090745,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-16266186,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-2741250,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-2754108,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-3057239,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-3590362,
http://linkedlifedata.com/resource/pubmed/commentcorrection/19062841-8354759
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
1520-8524
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pubmed:author |
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pubmed:issnType |
Electronic
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pubmed:volume |
124
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2011-20
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:19062841-Computer Simulation,
pubmed-meshheading:19062841-Gases,
pubmed-meshheading:19062841-Lithotripsy,
pubmed-meshheading:19062841-Models, Theoretical,
pubmed-meshheading:19062841-Motion,
pubmed-meshheading:19062841-Numerical Analysis, Computer-Assisted,
pubmed-meshheading:19062841-Pressure,
pubmed-meshheading:19062841-Surface Properties,
pubmed-meshheading:19062841-Time Factors
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pubmed:year |
2008
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pubmed:articleTitle |
Shock-induced collapse of a gas bubble in shockwave lithotripsy.
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pubmed:affiliation |
Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA. johnsen@stanford.edu
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, N.I.H., Extramural
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