Heart Sound Segmentation of Pediatric Auscultations Using Wavelet Analysis

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2013

Autores

Ana Castro (Autor) FEUP; Tiago T V Vinhoza (Autor) FCUP; Sandra S Mattos (Autor) Outra; Miguel T Coimbra (Autor) FCUP

Ata de Conferência Internacional

Título: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS

Páginas: 3909-3912

35th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society (EMBC)

Osaka, JAPAN, JUL 03-07, 2013

Indexação

ISI Web of Knowledge - 34 Citações

Scopus - 51 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Biotecnologia ambiental

Outras Informações

ID Authenticus: P-008-FN1

DOI: 10.1109/embc.2013.6610399

Abstract (EN): Auscultation is widely applied in clinical activity, nonetheless sound interpretation is dependent on clinician training and experience. Heart sound features such as spatial loudness, relative amplitude, murmurs, and localization of each component may be indicative of pathology. In this study we propose a segmentation algorithm to extract heart sound components (S1 and S2) based on it's time and frequency characteristics. This algorithm takes advantage of the knowledge of the heart cycle times (systolic and diastolic periods) and of the spectral characteristics of each component, through wavelet analysis. Data collected in a clinical environment, and annotated by a clinician was used to assess algorithm's performance. Heart sound components were correctly identified in 99.5% of the annotated events. S1 and S2 detection rates were 90.9% and 93.3% respectively. The median difference between annotated and detected events was of 33.9 ms.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4