Rolling ball sifting algorithm for the augmented visual inspection of carotid bruit auscultation

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Title:	Rolling ball sifting algorithm for the augmented visual inspection of carotid bruit auscultation
Authors:	黃輝揚;Huang, Adam;Lee, Chung-Wei;Liu, Hon-Man
Contributors:	生醫理工學院生醫科學與工程學系
Keywords:	639/166/985;692/4019;692/53/2421;Humanities and Social Sciences;multidisciplinary;Science
Date:	2016-07-25
Issue Date:	2026-04-23 11:20:25 (UTC+8)
Publisher:	Nature Publishing Group;London: Nature Publishing Group UK
Abstract:	摘要： Carotid bruits are systolic sounds associated with turbulent blood flow through atherosclerotic stenosis in the neck. They are audible intermittent high-frequency (above 200 Hz) sounds mixed with background noise and transmitted low-frequency (below 100 Hz) heart sounds that wax and wane periodically. It is a nontrivial task to extract both bruits and heart sounds with high fidelity for further computer-aided auscultation and diagnosis. In this paper we propose a rolling ball sifting algorithm that is capable to filter signals with a sharper frequency selectivity mechanism in the time domain. By rolling two balls (one above and one below the signal) of a suitable radius, the balls are large enough to roll over bruits and yet small enough to ride on heart sound waveforms. The high-frequency bruits can then be extracted according to a tangibility criterion by using the local extrema touched by the balls. Similarly, the low-frequency heart sounds can be acquired by a larger radius. By visualizing the periodicity information of both the extracted heart sounds and bruits, the proposed visual inspection method can potentially improve carotid bruit diagnosis accuracy. 其他題名： Sci Rep 出版者： London: Nature Publishing Group UK 出版日期： 2016-07-25 出處： Scientific reports, 2016-07, Vol.6 (1), p.30179, Article 30179 資源來源： Springer Nature Link Open Access Journals 版權： The Author(s) 2016 版權： Copyright © 2016, Macmillan Publishers Limited 2016 Macmillan Publishers Limited 識別號： ISSN: 2045-2322 識別號： EISSN: 2045-2322 識別號： DOI: 10.1038/srep30179 識別號： PMID: 27452722
Appears in Collections:	[Department of Biomedical Sciences and Engineering ] journal & Dissertation

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