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Conference Paper: Volume Estimation by Wavelet Transform of Doppler Heart Sound During Venous Air-Embolism in Dogs

TitleVolume Estimation by Wavelet Transform of Doppler Heart Sound During Venous Air-Embolism in Dogs
Authors
Keywordsair embolism
wavelet transform
precordial Doppler ultrasound
Doppler heart sound
Issue Date1998
PublisherIEEE.
Citation
The 20th IEEE Engineering in Medicine and Biology Society Conference Proceedings, Hong Kong, China, 29 October - 1 November 1998 , v. 3, p. 1463-1466 How to Cite?
AbstractThe Doppler heart sound signals detected by the precordial Doppler ultrasound method under simulated sub clinical and clinically significant venous air embolism were studied in anesthetized dogs. Signal processing using wavelet transform enhanced the contrast of embolic to normal signal, facilitating automatic detection and extraction of embolic signal simply by thresholding. Linear relationship of good correlation coefficient was obtained in log-log scale between the subclinical volume of injected air and the corresponding embolic signal power in all dogs. The calibration curve was found to be good estimate of the volume of embolic air during simulated clinically significant venous air embolism. Hence, we overcame the need of constant human attention for detecting venous air embolism and the lack of quantitative information on the volume of embolic air in the traditional precordial Doppler ultrasound method by the present approach.
Persistent Identifierhttp://hdl.handle.net/10722/46120
ISSN

 

DC FieldValueLanguage
dc.contributor.authorChan, FHYen_HK
dc.contributor.authorChan, BCBen_HK
dc.contributor.authorLui, PWen_HK
dc.contributor.authorPoon, PWFen_HK
dc.contributor.authorLam, FKen_HK
dc.date.accessioned2007-10-30T06:42:57Z-
dc.date.available2007-10-30T06:42:57Z-
dc.date.issued1998en_HK
dc.identifier.citationThe 20th IEEE Engineering in Medicine and Biology Society Conference Proceedings, Hong Kong, China, 29 October - 1 November 1998 , v. 3, p. 1463-1466en_HK
dc.identifier.issn1557-170Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/46120-
dc.description.abstractThe Doppler heart sound signals detected by the precordial Doppler ultrasound method under simulated sub clinical and clinically significant venous air embolism were studied in anesthetized dogs. Signal processing using wavelet transform enhanced the contrast of embolic to normal signal, facilitating automatic detection and extraction of embolic signal simply by thresholding. Linear relationship of good correlation coefficient was obtained in log-log scale between the subclinical volume of injected air and the corresponding embolic signal power in all dogs. The calibration curve was found to be good estimate of the volume of embolic air during simulated clinically significant venous air embolism. Hence, we overcame the need of constant human attention for detecting venous air embolism and the lack of quantitative information on the volume of embolic air in the traditional precordial Doppler ultrasound method by the present approach.en_HK
dc.format.extent421283 bytes-
dc.format.extent13817 bytes-
dc.format.extent8841 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectair embolismen_HK
dc.subjectwavelet transformen_HK
dc.subjectprecordial Doppler ultrasounden_HK
dc.subjectDoppler heart sounden_HK
dc.titleVolume Estimation by Wavelet Transform of Doppler Heart Sound During Venous Air-Embolism in Dogsen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1557-170X&volume=3&spage=1463&epage=1466&date=1998&atitle=Volume+Estimation+by+Wavelet+Transform+of+Doppler+Heart+Sound+During+Venous+Air-Embolism+in+Dogsen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/IEMBS.1998.747161en_HK
dc.identifier.hkuros45240-

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