a programmable cost-effective real-time high frequency ultrasound imaging boar

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1、10.1109/ULTSYM.2010.0499AProgrammable,Cost-Effective,Real-TimeHighFrequencyUltrasoundImagingBoardBasedonHigh-SpeedFPGAWeibaoQiu,YanyanYu,LeiSunDepartmentofHealthTechnologyandInformatics,TheHongKongPolytechnicUniversity,HongKong,ChinaEmail:htsunlei@inet.polyu.edu.hkAbstract—Highfrequency(>20MHz)u

2、ltrasoundimaginghascompactnessandfullydigitalcontrol.Theultrasoundimagemadeitpossibletodelineatesmallstructureswithfinespatialdataareacquiredanddisplayedsimultaneously.Suchadesignresolution.Previously,ahighfrequencyhighframerateimagingiscapableofhighframerate(upto200fps)imaginguptosystemhadbeend

3、evelopedforsmallanimalcardiacimaging[2,80MHz.5].Thispaperpresentsfurtherdevelopmentofaprogrammable,low-cost,real-timehighfrequencyultrasoundimagingboardII.METHODOLOGYbasedonhigh-speedFPGA.UtilizationofFPGAfacilitatesprogrammableapplicationswithhighflexibility.TheprintedTheentireimagingsysteminco

4、rporatedahighspeedcircuitboard(PCB)designachievescost-effectivenessandimagingboardwithanalogfront-endelectronicsanddigitalcompactness.ThePCIbusinterfaceallowshighspeeddataback-endunit,ahighspeedmechanicalsectorprobe[5]andatransferandreal-timeimaging.Thededicatedfront-endhighfrequencybipolarpulse

5、generator[6].Theblockdiagramelectronicsshowedaminimumdetectablesignalof18µV,isshowninFig.1.TheFPGAbasedprogrammableandcost-allowinga50dBdynamicrangeatatotalgainof50dB.Thehigh–effectiveimagingboardwasimplementedina12layersPCBspeedanalogtodigitalconverter(ADC)withatypical10.8bitscheme.Thisboarduti

6、lized64-bitPCIbusforhigh-speeddataENOBwasemployedtoaccomplishhighspeeddataacquisition.transferandreal-timeimaging.Algorithmssuchasband-passfilter,envelopedetectionanddigitalscanconverterwereimplementedintheFPGAwithhighspeedandhighflexibility.Finally,wirephantomexperimentA.Analogelectronicsshowed

7、goodperformanceofsuchaprogrammableandcompactHighresolutionimagingisnotonlysubjecttothedesign.ultrasoundfrequencyrange,butalsorelatedtothenoiselevelintheanalogcircuits.PoorcircuitdesignwillincreasetheKeywords;highfrequencyult