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Article: Effects of beam steering in pulsed-wave ultrasound velocity estimation

TitleEffects of beam steering in pulsed-wave ultrasound velocity estimation
Authors
Issue Date2005
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ultrasmedbio
Citation
Ultrasound In Medicine And Biology, 2005, v. 31 n. 8, p. 1073-1082 How to Cite?
AbstractExperimental and computer simulation methods have been used to investigate the significance of beam steering as a potential source of error in pulsed-wave flow velocity estimation. By simulating a typical linear-array transducer system as used for spectral flow estimation, it is shown that beam steering can cause an angle offset resulting in a change in the effective beam-flow angle. This offset primarily depends on the F-number and the nominal steering angle. For example, at an F-number of 3 and a beam-flow angle of 70°, the velocity error changed from -5% to + 5% when the steering angle changed from -20° to + 20°. Much higher errors can occur at higher beam-flow angles, with smaller F-numbers and greater steering. Our experimental study used a clinical ultrasound system, a tissue-mimicking phantom and a pulsatile waveform to determine peak flow velocity errors for various steering and beam-flow angles. These errors were found to be consistent with our simulation results. © 2005 World Federation for Ultrasound in Medicine & Biology.
Persistent Identifierhttp://hdl.handle.net/10722/155281
ISSN
2015 Impact Factor: 2.298
2015 SCImago Journal Rankings: 0.885
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSteinman, AHen_US
dc.contributor.authorYu, ACHen_US
dc.contributor.authorJohnston, KWen_US
dc.contributor.authorCobbold, RSCen_US
dc.date.accessioned2012-08-08T08:32:41Z-
dc.date.available2012-08-08T08:32:41Z-
dc.date.issued2005en_US
dc.identifier.citationUltrasound In Medicine And Biology, 2005, v. 31 n. 8, p. 1073-1082en_US
dc.identifier.issn0301-5629en_US
dc.identifier.urihttp://hdl.handle.net/10722/155281-
dc.description.abstractExperimental and computer simulation methods have been used to investigate the significance of beam steering as a potential source of error in pulsed-wave flow velocity estimation. By simulating a typical linear-array transducer system as used for spectral flow estimation, it is shown that beam steering can cause an angle offset resulting in a change in the effective beam-flow angle. This offset primarily depends on the F-number and the nominal steering angle. For example, at an F-number of 3 and a beam-flow angle of 70°, the velocity error changed from -5% to + 5% when the steering angle changed from -20° to + 20°. Much higher errors can occur at higher beam-flow angles, with smaller F-numbers and greater steering. Our experimental study used a clinical ultrasound system, a tissue-mimicking phantom and a pulsatile waveform to determine peak flow velocity errors for various steering and beam-flow angles. These errors were found to be consistent with our simulation results. © 2005 World Federation for Ultrasound in Medicine & Biology.en_US
dc.languageengen_US
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ultrasmedbioen_US
dc.relation.ispartofUltrasound in Medicine and Biologyen_US
dc.subject.meshBlood Flow Velocityen_US
dc.subject.meshComputer Simulationen_US
dc.subject.meshEquipment Designen_US
dc.subject.meshHumansen_US
dc.subject.meshModels, Biologicalen_US
dc.subject.meshPhantoms, Imagingen_US
dc.subject.meshPulsatile Flowen_US
dc.subject.meshTransducersen_US
dc.subject.meshUltrasonicsen_US
dc.subject.meshUltrasonography, Doppler, Pulsed - Methodsen_US
dc.titleEffects of beam steering in pulsed-wave ultrasound velocity estimationen_US
dc.typeArticleen_US
dc.identifier.emailYu, ACH:alfred.yu@hku.hken_US
dc.identifier.authorityYu, ACH=rp00657en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.ultrasmedbio.2005.04.005en_US
dc.identifier.pmid16085098-
dc.identifier.scopuseid_2-s2.0-23644439244en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-23644439244&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume31en_US
dc.identifier.issue8en_US
dc.identifier.spage1073en_US
dc.identifier.epage1082en_US
dc.identifier.isiWOS:000231154000010-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridSteinman, AH=7005277648en_US
dc.identifier.scopusauthoridYu, ACH=8699317700en_US
dc.identifier.scopusauthoridJohnston, KW=7202814635en_US
dc.identifier.scopusauthoridCobbold, RSC=7005052711en_US

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