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Sounds generated by turbulent blood flow through partially occluded brachial artery were used to model sounds expected from coronary occlusions. Two methods of nonlinear analysis, third-order autocovariance and time reversal, were evaluated for their ability to detect blood flow turbulence. The values obtained from turbulent acoustic data were compared against surrogate data having similar power spectra...
Coronary artery disease (CAD), a leading cause of death in the United States, has few early diagnostic mechanisms. Acoustic detection of sound associated with turbulent blood flow in coronary arteries has been shown to discriminate normal and abnormal subjects; however, improved performance is required for clinical use. Nonlinear analysis methods sensitive to turbulence could improve acoustic detection...
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