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Article: Transit-time broadening in pulsed Doppler ultrasound: A generalized amplitude modulation model

TitleTransit-time broadening in pulsed Doppler ultrasound: A generalized amplitude modulation model
Authors
Issue Date2006
Citation
Ieee Transactions On Ultrasonics, Ferroelectrics, And Frequency Control, 2006, v. 53 n. 3, p. 530-540 How to Cite?
AbstractIn Doppler ultrasound, transit-time broadening arises from the finite scatterer transit time through the sample volume. As a unifying description of this broadening mechanism, a generalized amplitude modulation signal model was developed to collectively account for the transittime effects of the ultrasound beam geometry and the range gate characteristics. Simulations based on a pulsed lineararray system also were performed to study the broadening extent for different scatterer flow lines. With our signal model and simulation results, some generalized insights were obtained on the characteristics of transit-time broadening. First, as consistent with previous findings, we found that, for scatterers passing though the center of the sample volume, the broadening extent mainly depends on beam-forming characteristics at higher beam-flow angles, but it is more dependent on range gate parameters at smaller angles. Second, for the central flow line, a transition angle exists in which a significant change occurs in the governing parameters of transit-time broadening. Third, for the general case in which scatterers undertake an off-central path through the sample volume, the broadening extent depends on both the beam geometry and the range gate. Bandwidth skewing and further spectral broadening also can be seen for these off-central flow lines. © 2006 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/155319
ISSN
2015 Impact Factor: 2.287
2015 SCImago Journal Rankings: 0.910
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYu, ACHen_US
dc.contributor.authorSteinman, AHen_US
dc.contributor.authorCobbold, RSCen_US
dc.date.accessioned2012-08-08T08:32:52Z-
dc.date.available2012-08-08T08:32:52Z-
dc.date.issued2006en_US
dc.identifier.citationIeee Transactions On Ultrasonics, Ferroelectrics, And Frequency Control, 2006, v. 53 n. 3, p. 530-540en_US
dc.identifier.issn0885-3010en_US
dc.identifier.urihttp://hdl.handle.net/10722/155319-
dc.description.abstractIn Doppler ultrasound, transit-time broadening arises from the finite scatterer transit time through the sample volume. As a unifying description of this broadening mechanism, a generalized amplitude modulation signal model was developed to collectively account for the transittime effects of the ultrasound beam geometry and the range gate characteristics. Simulations based on a pulsed lineararray system also were performed to study the broadening extent for different scatterer flow lines. With our signal model and simulation results, some generalized insights were obtained on the characteristics of transit-time broadening. First, as consistent with previous findings, we found that, for scatterers passing though the center of the sample volume, the broadening extent mainly depends on beam-forming characteristics at higher beam-flow angles, but it is more dependent on range gate parameters at smaller angles. Second, for the central flow line, a transition angle exists in which a significant change occurs in the governing parameters of transit-time broadening. Third, for the general case in which scatterers undertake an off-central path through the sample volume, the broadening extent depends on both the beam geometry and the range gate. Bandwidth skewing and further spectral broadening also can be seen for these off-central flow lines. © 2006 IEEE.en_US
dc.languageengen_US
dc.relation.ispartofIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Controlen_US
dc.titleTransit-time broadening in pulsed Doppler ultrasound: A generalized amplitude modulation modelen_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.doi10.1109/TUFFC.2006.1610561en_US
dc.identifier.pmid16555761-
dc.identifier.scopuseid_2-s2.0-33645697360en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33645697360&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume53en_US
dc.identifier.issue3en_US
dc.identifier.spage530en_US
dc.identifier.epage540en_US
dc.identifier.isiWOS:000235784900004-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridYu, ACH=8699317700en_US
dc.identifier.scopusauthoridSteinman, AH=7005277648en_US
dc.identifier.scopusauthoridCobbold, RSC=7005052711en_US

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