最新iMaging 50 Our Newest Radiology Operating System Unleashed50我们最新的影像学成像操作系统释放-药学医学精品资料.ppt

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1、最新iMaging50OurNewestRadiologyOperatingSystemUnleashed50我们最新的影像学成像操作系统释放-药学医学精品资料iMaging5.0:What’sNew?PACSConsultantsModalitiesProtocolsHIPAAPACSpicturearchivingandcommunicationsystemsreplaceshard-copybasedmeansofmanagingmedicalimages‘filmless’off-siteviewing/int

2、erpretationdatastoragevs.fileroomPhysicsXrayimagingShootelectronsattungstentargetEmitxrays(photons)Directedatobject/detectorPhysicsSomeofthephotonsabsorbedbypatientPhotonsthatpenetratepatientstrikedetectorDifferenttissueshavedifferentxrayabsorption-contrastHelic

3、alCTMRBasicsHydrogenprotonimagingObservebehaviorofprotonsinmagnetafterapplicationofRFsignalUnsurpassedcontrastresolution,spatialresolutionlimitedTimeconsuming,costlyContraindications?Ultrasound1to10MHzfrequency/1.5mmwavelengthspeeddeterminedbytissuedifferenttiss

4、ues(impedance)->differentspeed->reflectiontimeforechototravelbacktoprobeusedtocalculatedepthoftissueinterfacecausingechoDopplerUltrasoundapparentchangeinfrequencyorwavelengthofawavethatisperceivedbyanobservermovingrelativetothesourceofthewavesrbc’smoveawayortowa

5、rdsthetransducermeasuringfrequencyshiftofaparticularsamplebloodvolumedeterminesspeedanddirectionNuclearMedicineusesunsealedradioactivesubstancesindiagnosisandtherapydifferfrommostotherimagingmodalitiesinthatthetestsshowthefunctionofthesystembeinginvestigatedasop

6、posedtotheanatomymajorityofdiagnostictestsinvolveformationofanimageusinggammacameraMostdiagnosticradionuclidesemitgammaraysNuclearMedicineThemostcommonlyusedradionuclidesare:technetium-99miodine-123and131thallium-201gallium-67PET-metabolicallyactivemolecule(suga

7、r)PETpositronemissiontomographyOncology:(18F)fluorodeoxyglucose(FDG,FDG-PET)retainedbytissueswithhighmetabolicactivityNeurology:radioactivityassociatedwithbrainactivityCardiology:"hibernatingmyocardium"InterventionalRadiologyVascularDiagnosis-Arteriography-Veno

8、graphy-LymphangiographyVascularIntervention-Angioplasty/stents-Embolization-Filters-ChemoemboVenousaccessNonVascularIntervention-Regionaltumortherapy-Biopsy-Dra