Surgery – Truss – Pad
Patent
1995-08-28
1997-06-17
Nasser, Robert L.
Surgery
Truss
Pad
128668, 128687, 128713, A61B 500
Patent
active
056388233
ABSTRACT:
A system and method for noninvasively detecting coronary artery disease. The system and method utilize a vasodilator drug to increase the signal-to-noise ratio of an acoustic signal that represents diastolic heart sounds of a patient. A wavelet transform is performed on the acoustic signal to provide parameters for a feature vector. Scaled clinical examination parameters such as a patient's sex, age, body weight, smoking condition, blood pressure, and family history are also included in the feature vector. The feature vector is used as an input pattern to neural networks. The output of the neural networks represent a diagnosis of coronary stenosis in a patient.
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M. Akay et al., "Acoustical Detection of Coronary Occlusions Using Neural Networks", Nov. 1993, J. Biomed. Eng., pp. 469-473.
M. Akay et al., "Investigating the Effects of Vasodilator Drugs on the Turbulent Sound Caused by Femoral Artery Stenosis Using Short-Term Fourier and Wavelet Transform Methods", Oct. 1994, IEEE Transactions, vol. 41, pp. 921-928.
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Akay Metin
Akay Yasemin M.
Kostis John
Welkowitz Walter
Irons Edward S.
Nasser Robert L.
Rutgers University
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