血管成形术前后舒张心音分析

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1988-11-01 DOI:10.1109/IEMBS.1988.94505

M. Akay, M. Bauer, J. Semmlow, W. Welkowitz, J. Kostis

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引用次数: 13

摘要

比较血管成形术前后舒张期心音频谱。由于与部分闭塞的冠状动脉相关的低水平声音会受到相当大的背景噪声的污染，传统的FFT分析可能无法产生准确的频谱。由于特征向量方法具有较高的分辨率，特别是在存在噪声的情况下，因此选择特征向量方法来生成频谱。在所有病例中，血管成形术后观察到高频频谱成分明显减少。

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Analysis of diastolic heart sounds before and after angioplasty

The frequency spectra of diastolic heart sounds are compared before and after angioplastic surgery. Since the low-level sounds associated with partially occluded coronary arteries will be contaminated with considerable background noise, traditional FFT analysis may not produce an accurate frequency spectrum. Eigenvector methods have been selected to generate the frequency spectra because of their higher resolution, particularly in the presence of noise. In all cases a marked decrease in high frequency spectral components was observed following angioplasty.<>

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Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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