Water content contribution in calculus phantom ablation during Q-switched Tm:YAG laser lithotripsy
Q-switched (QS) Tm:YAG laser ablation mechanisms on urinary calculi are still unclear to researchers. Here, dependence of water content in calculus phantom on calculus ablation performance was investigated. White gypsum cement was used as a calculus phantom model. The calculus phantoms were ablated...
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| Veröffentlicht in: | Journal of biomedical optics 2015-12, Vol.20 (12), p.128001-128001 |
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| container_title | Journal of biomedical optics |
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| creator | Zhang, Jian J Rajabhandharaks, Danop Xuan, Jason Rongwei Wang, Hui Chia, Ray W. J Hasenberg, Tom Kang, Hyun Wook |
| description | Q-switched (QS) Tm:YAG laser ablation mechanisms on urinary calculi are still unclear to researchers. Here, dependence of water content in calculus phantom on calculus ablation performance was investigated. White gypsum cement was used as a calculus phantom model. The calculus phantoms were ablated by a total 3-J laser pulse exposure (20 mJ, 100 Hz, 1.5 s) and contact mode with N=15 sample size. Ablation volume was obtained on average 0.079, 0.122, and 0.391 mm3 in dry calculus in air, wet calculus in air, and wet calculus in-water groups, respectively. There were three proposed ablation mechanisms that could explain the effect of water content in calculus phantom on calculus ablation performance, including shock wave due to laser pulse injection and bubble collapse, spallation, and microexplosion. Increased absorption coefficient of wet calculus can cause stronger spallation process compared with that caused by dry calculus; as a result, higher calculus ablation was observed in both wet calculus in air and wet calculus in water. The test result also indicates that the shock waves generated by short laser pulse under the in-water condition have great impact on the ablation volume by Tm:YAG QS laser. |
| doi_str_mv | 10.1117/1.JBO.20.12.128001 |
| format | Article |
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There were three proposed ablation mechanisms that could explain the effect of water content in calculus phantom on calculus ablation performance, including shock wave due to laser pulse injection and bubble collapse, spallation, and microexplosion. Increased absorption coefficient of wet calculus can cause stronger spallation process compared with that caused by dry calculus; as a result, higher calculus ablation was observed in both wet calculus in air and wet calculus in water. The test result also indicates that the shock waves generated by short laser pulse under the in-water condition have great impact on the ablation volume by Tm:YAG QS laser.</description><identifier>ISSN: 1083-3668</identifier><identifier>EISSN: 1560-2281</identifier><identifier>DOI: 10.1117/1.JBO.20.12.128001</identifier><identifier>PMID: 26662067</identifier><language>eng</language><publisher>United States: Society of Photo-Optical Instrumentation Engineers</publisher><subject>Ablation ; Calculus ; Drying ; Equipment Design ; Humans ; Lasers ; Lasers, Solid-State ; Lithotripsy ; Lithotripsy, Laser - methods ; Mathematical analysis ; Microscopy ; Moisture content ; Phantoms, Imaging ; Shock waves ; Spallation ; Urinary Calculi - pathology ; Water - chemistry</subject><ispartof>Journal of biomedical optics, 2015-12, Vol.20 (12), p.128001-128001</ispartof><rights>2015 Society of Photo-Optical Instrumentation Engineers (SPIE)</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c500t-fa7bb9b040ccf2db00646241c9437fc2b531308ff3a0e40474b6d8ff79a8b9493</citedby><cites>FETCH-LOGICAL-c500t-fa7bb9b040ccf2db00646241c9437fc2b531308ff3a0e40474b6d8ff79a8b9493</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26662067$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhang, Jian J</creatorcontrib><creatorcontrib>Rajabhandharaks, Danop</creatorcontrib><creatorcontrib>Xuan, Jason Rongwei</creatorcontrib><creatorcontrib>Wang, Hui</creatorcontrib><creatorcontrib>Chia, Ray W. J</creatorcontrib><creatorcontrib>Hasenberg, Tom</creatorcontrib><creatorcontrib>Kang, Hyun Wook</creatorcontrib><title>Water content contribution in calculus phantom ablation during Q-switched Tm:YAG laser lithotripsy</title><title>Journal of biomedical optics</title><addtitle>J. Biomed. Opt</addtitle><description>Q-switched (QS) Tm:YAG laser ablation mechanisms on urinary calculi are still unclear to researchers. Here, dependence of water content in calculus phantom on calculus ablation performance was investigated. White gypsum cement was used as a calculus phantom model. The calculus phantoms were ablated by a total 3-J laser pulse exposure (20 mJ, 100 Hz, 1.5 s) and contact mode with N=15 sample size. Ablation volume was obtained on average 0.079, 0.122, and 0.391 mm3 in dry calculus in air, wet calculus in air, and wet calculus in-water groups, respectively. There were three proposed ablation mechanisms that could explain the effect of water content in calculus phantom on calculus ablation performance, including shock wave due to laser pulse injection and bubble collapse, spallation, and microexplosion. Increased absorption coefficient of wet calculus can cause stronger spallation process compared with that caused by dry calculus; as a result, higher calculus ablation was observed in both wet calculus in air and wet calculus in water. The test result also indicates that the shock waves generated by short laser pulse under the in-water condition have great impact on the ablation volume by Tm:YAG QS laser.</description><subject>Ablation</subject><subject>Calculus</subject><subject>Drying</subject><subject>Equipment Design</subject><subject>Humans</subject><subject>Lasers</subject><subject>Lasers, Solid-State</subject><subject>Lithotripsy</subject><subject>Lithotripsy, Laser - methods</subject><subject>Mathematical analysis</subject><subject>Microscopy</subject><subject>Moisture content</subject><subject>Phantoms, Imaging</subject><subject>Shock waves</subject><subject>Spallation</subject><subject>Urinary Calculi - pathology</subject><subject>Water - chemistry</subject><issn>1083-3668</issn><issn>1560-2281</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU1PFTEUhhsjEQT_gAszSzdzOf24bcfdFQExJGgCIa6attPxlnQ-aDsx8Out94IsMMakyel7zvO-i3MQeothgTEWh3jx5ePFghRFypMA-AXaw0sONSESvyx_kLSmnMtd9DqlGwCQvOGv0C7hnBPgYg-Za51drOw4ZDfkTY3ezNmPQ-WHyupg5zCnalrrIY99pU3Qm2E7Rz_8qL7V6afPdu3a6rL_8H11WgWdSmDweT2WqCndHaCdTofk3jzUfXR1cnx59Lk-vzg9O1qd13YJkOtOC2MaAwys7UhrADjjhGHbMCo6S8ySYgqy66gGx4AJZnhbpGi0NA1r6D56v82d4ng7u5RV75N1IejBjXNSWEiOBZFS_gfKGo4lEbSgZIvaOKYUXaem6Hsd7xQG9fsMCqtyBkWKImp7hmJ695A_m961fyyPey_A4RZIk3fqZpzjUFbz78jrvzmeuHs_PXNtmquYvQ3u66eT5_Op7egvyxutzw</recordid><startdate>20151201</startdate><enddate>20151201</enddate><creator>Zhang, Jian J</creator><creator>Rajabhandharaks, Danop</creator><creator>Xuan, Jason Rongwei</creator><creator>Wang, Hui</creator><creator>Chia, Ray W. 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J ; Hasenberg, Tom ; Kang, Hyun Wook</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c500t-fa7bb9b040ccf2db00646241c9437fc2b531308ff3a0e40474b6d8ff79a8b9493</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Ablation</topic><topic>Calculus</topic><topic>Drying</topic><topic>Equipment Design</topic><topic>Humans</topic><topic>Lasers</topic><topic>Lasers, Solid-State</topic><topic>Lithotripsy</topic><topic>Lithotripsy, Laser - methods</topic><topic>Mathematical analysis</topic><topic>Microscopy</topic><topic>Moisture content</topic><topic>Phantoms, Imaging</topic><topic>Shock waves</topic><topic>Spallation</topic><topic>Urinary Calculi - pathology</topic><topic>Water - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Jian J</creatorcontrib><creatorcontrib>Rajabhandharaks, Danop</creatorcontrib><creatorcontrib>Xuan, Jason Rongwei</creatorcontrib><creatorcontrib>Wang, Hui</creatorcontrib><creatorcontrib>Chia, Ray W. 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J</au><au>Hasenberg, Tom</au><au>Kang, Hyun Wook</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Water content contribution in calculus phantom ablation during Q-switched Tm:YAG laser lithotripsy</atitle><jtitle>Journal of biomedical optics</jtitle><addtitle>J. Biomed. Opt</addtitle><date>2015-12-01</date><risdate>2015</risdate><volume>20</volume><issue>12</issue><spage>128001</spage><epage>128001</epage><pages>128001-128001</pages><issn>1083-3668</issn><eissn>1560-2281</eissn><abstract>Q-switched (QS) Tm:YAG laser ablation mechanisms on urinary calculi are still unclear to researchers. Here, dependence of water content in calculus phantom on calculus ablation performance was investigated. White gypsum cement was used as a calculus phantom model. The calculus phantoms were ablated by a total 3-J laser pulse exposure (20 mJ, 100 Hz, 1.5 s) and contact mode with N=15 sample size. Ablation volume was obtained on average 0.079, 0.122, and 0.391 mm3 in dry calculus in air, wet calculus in air, and wet calculus in-water groups, respectively. There were three proposed ablation mechanisms that could explain the effect of water content in calculus phantom on calculus ablation performance, including shock wave due to laser pulse injection and bubble collapse, spallation, and microexplosion. Increased absorption coefficient of wet calculus can cause stronger spallation process compared with that caused by dry calculus; as a result, higher calculus ablation was observed in both wet calculus in air and wet calculus in water. The test result also indicates that the shock waves generated by short laser pulse under the in-water condition have great impact on the ablation volume by Tm:YAG QS laser.</abstract><cop>United States</cop><pub>Society of Photo-Optical Instrumentation Engineers</pub><pmid>26662067</pmid><doi>10.1117/1.JBO.20.12.128001</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| source | MEDLINE; EZB-FREE-00999 freely available EZB journals; PubMed Central |
| subjects | Ablation Calculus Drying Equipment Design Humans Lasers Lasers, Solid-State Lithotripsy Lithotripsy, Laser - methods Mathematical analysis Microscopy Moisture content Phantoms, Imaging Shock waves Spallation Urinary Calculi - pathology Water - chemistry |
| title | Water content contribution in calculus phantom ablation during Q-switched Tm:YAG laser lithotripsy |
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