Detection and classification of cardiac murmurs using segmentation techniques and Artificial Neural Networks

S. L. Strunic, F. Rios-Gutierrez, R. Alba-Flores, G. Nordehn, Stanley G Burns

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

A diagnostic system based on Artificial Neural Networks (ANN) is implemented as a detector and classifier of heart murmurs. Segmentation and alignment algorithms serve as important pre-processing steps before heart sounds are applied to the ANN structure. The system enables users to create a classifier that can be trained to detect virtually any desired target set of heart sounds. The output of the system is the classification of the sound as either normal or a type of heart murmur. The ultimate goal of this research is to develop a tool that can be used to help physicians in the auscultation of patients and thereby reduce the number of unnecessary echocardiograms- those that are ordered for healthy patients. Testing has been conducted using both simulated and recorded patient heart sounds. Results are described for a system designed to classify heart sounds as normal, aortic stenosis, or aortic regurgitation. The system is able to classify with up to 85 ± 7.4% accuracy and 95 ± 6.8% sensitivity for a group of 72 simulated heart sounds. The accuracy rate of the ANN system for simulated sounds is compared to the accuracy rate of a group of medical students who were asked to classify heart sounds from the same group of sounds classified by the ANN system.

Original languageEnglish (US)
Title of host publicationProceedings of the Twentieth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2007
Pages128-133
Number of pages6
StatePublished - Dec 28 2007
Event20th International Florida Artificial Intelligence Research Society Conference, FLAIRS 2007 - Key West, FL, United States
Duration: May 7 2007May 9 2007

Publication series

NameProceedings of the Twentieth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2007

Other

Other20th International Florida Artificial Intelligence Research Society Conference, FLAIRS 2007
CountryUnited States
CityKey West, FL
Period5/7/075/9/07

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