GE磁共振简称电子教案.doc

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1、精品好文档，推荐学习交流GlossaryACGDAdvancedConceptGradientDriverAGPApplicationsGatewayProcessor[Board]APArrayProcessorBoardAPMAnalogPowerMonitor[Board]APSAutoprescan:Auto-adjustmentofdataacquisition(scan)parametersAPSAcquisitionProcessingSystem[Board]AVSAutovoxelshimA

2、WSAutomaticWaterSuppressionBRMBodyResonanceModuleBRMBodyResonanceModuleCANControlAreaNetwork[Board]CCCCANCoreCommunication[Board]CRMCardiacResonanceModuleCRTCathodeRayTubeCRYOGENAsubstanceforproducinglowtemperatures.Liquidheliumisthecryogenusedtocoolthemagn

3、ettoapproximately4Kelvin(269Cor452F).CRYOSTATAnapparatusmaintainingaverylowconstanttemperature.Thecryostatconsistsofoneconcentric,cylindricalcontainerhousedinanoutervacuumtightvessel.Themagnetandshimcoilsaremountedintheinnercontainer.Thecontainerisfilledwit

4、hliquidhelium.Theshieldssurroundingtheinnercontainerarekeptcoldbyarefrigerationdevice.CVControlvariableDCBDriverControlBoardDEWARAcontainerwithanevacuatedspacebetweentwohighlyreflectivewallsusedtokeeplowtemperaturesubstancesatnearconstanttemperatures.Liquid

5、heliumisusuallystoredandshippedindewarsDMDriverModuleDRF1DigitalReceiveFilter1[Board]DSPDigitalSignalProcessingEXCLUSIONZONEAreawherethemagneticfluxdensityisgreaterthanfivegauss.Personnelwithcardiacpacemakers,neurostimulatorsandotherbiostimulationdevicesmus

6、tNOTenterthiszone.Signsarepostedoutsidethefivegausslinealertingpersonnelofthisrequirement.Sincethemagneticfieldisthreedimensional,signsarealsopostedonfloorsaboveandbelowtheMagnetRoominwhichthefivegausslineexists.FERROUSMATERIALAnysubstancecontainingironwhic

7、hisstronglyattractedbyamagneticfield.FOFiberOpticFOVFieldofViewFPIOFrontPanelInput/Output[Board]FWHMFullWidthHalfMaxGAUSS(G)Aunitofmagneticfluxdensity.Theearthsmagneticfieldstrengthisapproximatelyonehalfgausstoonegaussdependingonlocation.Theinternationallya

8、cceptedunitisthetesla(1Tesla=10,000Gand1milliTesla=10G).GPGradientProcessor[Board]仅供学习与交流，如有侵权请联系网站删除谢谢6精品好文档，推荐学习交流GRADIENTTheamountanddirectionoftherateofchangeinspaceofthemagneticfieldstrength.Inthe