hifu热消融过程中空化与温升、凝固性坏死的关系

hifu热消融过程中空化与温升、凝固性坏死的关系

ID:33786882

大小:4.24 MB

页数:38页

时间:2019-03-01

hifu热消融过程中空化与温升、凝固性坏死的关系_第1页
hifu热消融过程中空化与温升、凝固性坏死的关系_第2页
hifu热消融过程中空化与温升、凝固性坏死的关系_第3页
hifu热消融过程中空化与温升、凝固性坏死的关系_第4页
hifu热消融过程中空化与温升、凝固性坏死的关系_第5页
资源描述:

《hifu热消融过程中空化与温升、凝固性坏死的关系》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库

1、THEREIATIONSHIPBETWEENCAVITATIONANDTEM呼ERATURERISE、COAGUIATIONNECROSISDURINGHIGHINTENSrrYFOCUSEDUIJRSOUNDINDUCEDTHERmLABLATIONPROCESSBACKGROUNDABSTRACTHighintensityfocusedul仃as咖1dtumormer印y,:aprecisefocusonnon。mVaslvetumors仃eatmentwimnosl(iniIlcision,hasa

2、goodemcacyandsaf.e哆andshowsgoodprospects.TheHIFUresulⅡngi11tissuethennalcoagulationnecrosisisaVe巧compleXtraIlsientprocess.Tllep血cipleistomakeuseofmeul仃asoundbe锄whichhasconve略encecharact舐stics,aIldpene仃atiIlginmeo略砌zationa11dmeiIlllerentsoulldabso印tionchal

3、_actens廿cs.Theultrasoundwillbel眦lchedinvi仃oul仃asollicfbcusingtopromotetargettissuetoasmallre百onofbody.Withmememale彘cts,caV油tionandmechaIlicale舵cts,itproduce订ansienthi曲temperatureaboVe60℃,aJldthustllefomationofirreversiblecoagulationnecrosisinordertoachieV

4、ethepu印oseoftreatInent.Basedontheresultsoft11en】1aldoseresearch,ithastoreachacertailltemperatureandlastforsometimeinHIFU仃e锄entprocesstoproducecoagula廿onnecrosis.Tllerefore,real-timetemperaturemonito咖gintarget6re百onhas伊eatsi嘶ficallceone街cacyevaluationandⅡl

5、erapydosedeten】1ination.HIFUdestmctionmechallismintargettissueismailllVme胁ale疏ctaIldcaVitatione虢ct.Heatisconvened舶mul仃asoundabso印tioninta唱et缸ssue.Whenul仃asoulldi11radiateswimthesoundpressureexceedillgacenain心eshold,tinyaircoreorcavitiesexpallds锄dfIomscaVi

6、tationbubbles.CaVitationist11eselIiesofdynaIIlicsofcavitationbubblesuIldersoundpressure,suchasoscillation,铲owth,contractionauldcollapse.StudieshaVeshownthats旬rongcavitationactivit_ywillleadtohi曲teInperature,11i曲pressure,shoCkwave,m曲.speedjetaIldsuchphysic

7、alphenomena,aJlofwhicharelikelytoimpactthethermale虢ctaJldcoagula石onnecrosisfomation.Themlocoupletemperaturemeasur锄entandpassivecavitadondetectionisusedtomonitorta玛etregion’st锄peratureelevationandcaVitationchallgesoVertimeiIlmeHIFUirradiationinVi仃obovineli

8、ver.toeXploremerelationsllipbetweencavitationa11dt锄peraturerise.Recordsofcoagulationnecrosisfo衄ationinbovineeyelens址enbvHi曲。speedphotography,combinedwithcaVitationsi印alaIlalysis,areusedtoaIlalyzetherelationshipbe铆ee

当前文档最多预览五页,下载文档查看全文

此文档下载收益归作者所有

当前文档最多预览五页,下载文档查看全文
温馨提示:
1. 部分包含数学公式或PPT动画的文件,查看预览时可能会显示错乱或异常,文件下载后无此问题,请放心下载。
2. 本文档由用户上传,版权归属用户,天天文库负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容,确认文档内容符合您的需求后进行下载,若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误,付费完成后未能成功下载的用户请联系客服处理。