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Variations of stress field and stone fracture produced at different lateral locations in a shockwave lithotripter field.

Publication ,  Journal Article
Xiang, G; Ma, X; Liang, C; Yu, H; Liao, D; Sankin, G; Cao, S; Wang, K; Zhong, P
Published in: The Journal of the Acoustical Society of America
August 2021

During clinical procedures, the lithotripter shock wave (LSW) that is incident on the stone and resultant stress field is often asymmetric due to the respiratory motion of the patient. The variations of the LSW-stone interaction and associated fracture pattern were investigated by photoelastic imaging, phantom experiments, and three-dimensional fluid-solid interaction modeling at different lateral locations in a lithotripter field. In contrast to a T-shaped fracture pattern often observed in the posterior region of the disk-shaped stone under symmetric loading, the fracture pattern gradually transitioned to a tilted L-shape under asymmetric loading conditions. Moreover, the model simulations revealed the generation of surface acoustic waves (SAWs), i.e., a leaky Rayleigh wave on the anterior boundary and Scholte wave on the posterior boundary of the stone. The propagation of SAWs on the stone boundary is accompanied by a progressive transition of the LSW reflection pattern from regular to von Neumann and to weak von Neumann reflection near the glancing incidence and, concomitantly, the development and growth of a Mach stem, swirling around the stone boundary. The maximum tensile stress and stress integral were produced by SAWs on the stone boundary under asymmetric loading conditions, which drove the initiation and extension of surface cracks into the bulk of the stone that is confirmed by micro-computed tomography analysis.

Duke Scholars

Published In

The Journal of the Acoustical Society of America

DOI

EISSN

1520-8524

ISSN

0001-4966

Publication Date

August 2021

Volume

150

Issue

2

Start / End Page

1013

Related Subject Headings

  • X-Ray Microtomography
  • Sound
  • Phantoms, Imaging
  • Lithotripsy
  • Kidney Calculi
  • Humans
  • Acoustics
 

Citation

APA
Chicago
ICMJE
MLA
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Xiang, G., Ma, X., Liang, C., Yu, H., Liao, D., Sankin, G., … Zhong, P. (2021). Variations of stress field and stone fracture produced at different lateral locations in a shockwave lithotripter field. The Journal of the Acoustical Society of America, 150(2), 1013. https://doi.org/10.1121/10.0005823
Xiang, Gaoming, Xiaojian Ma, Cosima Liang, Hongyang Yu, Defei Liao, Georgy Sankin, Shunxiang Cao, Kevin Wang, and Pei Zhong. “Variations of stress field and stone fracture produced at different lateral locations in a shockwave lithotripter field.The Journal of the Acoustical Society of America 150, no. 2 (August 2021): 1013. https://doi.org/10.1121/10.0005823.
Xiang G, Ma X, Liang C, Yu H, Liao D, Sankin G, et al. Variations of stress field and stone fracture produced at different lateral locations in a shockwave lithotripter field. The Journal of the Acoustical Society of America. 2021 Aug;150(2):1013.
Xiang, Gaoming, et al. “Variations of stress field and stone fracture produced at different lateral locations in a shockwave lithotripter field.The Journal of the Acoustical Society of America, vol. 150, no. 2, Aug. 2021, p. 1013. Epmc, doi:10.1121/10.0005823.
Xiang G, Ma X, Liang C, Yu H, Liao D, Sankin G, Cao S, Wang K, Zhong P. Variations of stress field and stone fracture produced at different lateral locations in a shockwave lithotripter field. The Journal of the Acoustical Society of America. 2021 Aug;150(2):1013.

Published In

The Journal of the Acoustical Society of America

DOI

EISSN

1520-8524

ISSN

0001-4966

Publication Date

August 2021

Volume

150

Issue

2

Start / End Page

1013

Related Subject Headings

  • X-Ray Microtomography
  • Sound
  • Phantoms, Imaging
  • Lithotripsy
  • Kidney Calculi
  • Humans
  • Acoustics