ablation of hepatic tumors simultaneous 微波消融治疗肝肿瘤的同时课件

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1、ComparisonofMicrowaveandRadiofrequencyAblationofHepaticTissueinaPorcineinvivoModel.AndrewWrightMD,ChrisJohnson,FredLeeJr.MD,andDavidMahviMDDepartmentsofRadiologyandSurgeryUniversityofWisconsinHospitalMicrowaveAblationTheoreticaladvantagesoverradiofrequencyablationNogroundpadNotlimitedbyti

2、ssuecharringandimpedencechangesLargerzoneofactiveheatingUseofMultipleProbesHypothesisBecausemicrowaveandradiofrequencyablationarebothheatbased,therewillbenodifferenceinablationsizeorlesionpathologybetweenthetwotechnologiesMethodsMicrowaveAblationVivantMedicalprototypesystem10minuteablatio

3、n,40WattsRadiofrequencyAblationRITAMedicalSystemsStarburst10minuteablation,3cmdeployment100oCtargettemperatureMicrowaveAblationSystem•VivantMedical•13g,15cmdipoleantenna•915MHzgenerator•FiberoptictemperaturemonitorRadiofrequencyAblationSystem•RITAMedical•14g,15cmexpandablearray•460kHzgene

4、rator•IntegratedthermocoupleTreatmentProtocolNineteencrossbredfemaleswine0,2,and28daysurvivalgroupsMixofMWandRFlesionsineachanimalPathology,serialCTscanning28Daysurvivalgroup4MWor4RFlesionsineachanimalPathology,seriallabdrawsLesionVolume***p=.02LesionLength**▪▪◦*p<.001▪p=.02◦p<.001◦Lesion

5、DiameterLaboratoryData**p<0.001NosignificantdifferenceinAST,ALT,LDH,AlkalinePhosphatase,WBC,orHCTPathologyRFAMWImmediate48o4weeksCTImaging48Hours4WeeksSummaryMWlesionslongerthanRFPathologicalandradiologiccharacteristicssimilarbetweenRFandMWablationBothMWandRFcausethrombocytopeniaat48hours

6、MWablationtechnicallyeasierthanmultiple-prongRFablationConclusionsMWcreatessimilarzonesofcoagulationnecrosisasRFMWablationhasseveraltheoreticaladvantagesoverRFLargerzoneofactiveheatingAbilitytousemultipleprobes