Characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter
This study investigated the characteristics of the secondary bubble cluster produced by an electrohydraulic lithotripter using high-speed imaging and passive cavitation detection techniques. The results showed that (i) the discrepancy of the collapse time between near a flat rigid boundary and in a...
| Váldodahkkit: | , , |
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| Eará dahkkit: | |
| Materiálatiipa: | Journal Article |
| Giella: | English |
| Almmustuhtton: |
2013
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| Liŋkkat: | https://hdl.handle.net/10356/85434 http://hdl.handle.net/10220/11766 |
| _version_ | 1826120488616722432 |
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| author | Zhou, Yufeng. Qin, Jun. Zhong, Pei. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Zhou, Yufeng. Qin, Jun. Zhong, Pei. |
| author_sort | Zhou, Yufeng. |
| collection | NTU |
| description | This study investigated the characteristics of the secondary bubble cluster produced by an electrohydraulic lithotripter using high-speed imaging and passive cavitation detection techniques. The results showed that (i) the discrepancy of the collapse time between near a flat rigid boundary and in a free field of the secondary bubble cluster was not as significant as that by the primary one; (ii) the secondary bubble clusters were small but in a high bubble density and nonuniform in distribution, and they did not expand and aggregate significantly near a rigid boundary; and (iii) the corresponding bubble collapse was weaker with few microjet formation and bubble rebound. By applying a strong suction flow near the electrode tip, the production of the secondary shock wave (SW) and induced bubble cluster could be disturbed significantly, but without influence on the primary ones. Consequently, stone fragmentation efficiency was reduced from 41.2 ± 7.1% to 32.2 ± 3.5% after 250 shocks (p < 0.05). Altogether, these observations suggest that the secondary bubble cluster produced by an electrohydraulic lithotripter may contribute to its ability for effective stone fragmentation. |
| first_indexed | 2024-10-01T05:17:35Z |
| format | Journal Article |
| id | ntu-10356/85434 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:17:35Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/854342022-02-16T16:26:17Z Characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter Zhou, Yufeng. Qin, Jun. Zhong, Pei. School of Mechanical and Aerospace Engineering This study investigated the characteristics of the secondary bubble cluster produced by an electrohydraulic lithotripter using high-speed imaging and passive cavitation detection techniques. The results showed that (i) the discrepancy of the collapse time between near a flat rigid boundary and in a free field of the secondary bubble cluster was not as significant as that by the primary one; (ii) the secondary bubble clusters were small but in a high bubble density and nonuniform in distribution, and they did not expand and aggregate significantly near a rigid boundary; and (iii) the corresponding bubble collapse was weaker with few microjet formation and bubble rebound. By applying a strong suction flow near the electrode tip, the production of the secondary shock wave (SW) and induced bubble cluster could be disturbed significantly, but without influence on the primary ones. Consequently, stone fragmentation efficiency was reduced from 41.2 ± 7.1% to 32.2 ± 3.5% after 250 shocks (p < 0.05). Altogether, these observations suggest that the secondary bubble cluster produced by an electrohydraulic lithotripter may contribute to its ability for effective stone fragmentation. 2013-07-17T07:16:10Z 2019-12-06T16:03:42Z 2013-07-17T07:16:10Z 2019-12-06T16:03:42Z 2012 2012 Journal Article Zhou, Y., Qin, J., & Zhong, P. (2012). Characteristics of the Secondary Bubble Cluster Produced by an Electrohydraulic Shock Wave Lithotripter. Ultrasound in Medicine & Biology, 38(4), 601-610. 0301-5629 https://hdl.handle.net/10356/85434 http://hdl.handle.net/10220/11766 10.1016/j.ultrasmedbio.2011.12.022 22390990 en Ultrasound in medicine & biology © 2012 Elsevier. |
| spellingShingle | Zhou, Yufeng. Qin, Jun. Zhong, Pei. Characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter |
| title | Characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter |
| title_full | Characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter |
| title_fullStr | Characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter |
| title_full_unstemmed | Characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter |
| title_short | Characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter |
| title_sort | characteristics of the secondary bubble cluster produced by an electrohydraulic shock wave lithotripter |
| url | https://hdl.handle.net/10356/85434 http://hdl.handle.net/10220/11766 |
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