Transcription of Signal Processing Overview of Ultrasound Systems for ...
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Signal Processing Overview of Ultrasound Systems for ...
WhitePaperSPRAB12 November2008 SignalProcessingOverviewofUltrasoundSyst emsforMedicalImagingMurtazaAli, :thefrontend(thatincludestransmission,re ception,anddigitizationofultrasoundsigna l),followedbybeamforming(tofocusonaparti cularscanline),themidend(thatperformsdem odulation,envelopedetection,andcompressi on),andfinally,thebackend(thatperformsva riousimageenhancementandrenderingfunctio ns).TheprocessingrequiredinDopplermodeis describedand,finally,theprocessingandiss uesrelatedto3 ,obstetrics,gynecology,abdominalimaging, , ,( ,inguidinginterventionalprocedures). ,digitalsignalprocessors(DSP) (SOC) [20]. , (DAS) , ,whichiscomposedofimageenhancement,noise reduction, , ,Section8brieflyintroducesthebasicconcep tsusedfor3 November2008 SubmitDocumentationFeedback2 UltrasoundSystem:BasicConceptsRegion of InterestScan LinesFocal ,bynomeans, , ,ultrasoundsystemsoperateinthe2 MHzto20 MHzfrequencyrange,althoughsomesystemsare approaching40 MHzforharmonicimaging[3].
Ultrasound systems are signal processing intensive. With various imaging modalities and different processing requirements in each modality, digital signal processors (DSP) are finding increasing use in such systems. The advent of low power system-on-chip (SOC) with DSP and RISC processors is allowing
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