Results 51 to 60 of about 5,548 (255)

Heart Sound Classification Using Wavelet Analysis Approaches and Ensemble of Deep Learning Models

open access: yesApplied Sciences, 2023
Analyzing the condition and function of the heart is very important because cardiovascular diseases (CVDs) are responsible for high mortality rates worldwide and can lead to strokes and heart attacks; thus, early diagnosis and treatment are important ...
Jin-A Lee, Keun-Chang Kwak
doaj   +1 more source

Impact of Blood Pressure Across the Life Course on Arterial Stiffness in Midlife: The Mediating Role of Metabolic Factors

open access: yesMedComm, Volume 6, Issue 11, November 2025.
This 30‐year cohort study demonstrates that elevated blood pressure (BP) since childhood contributes to arterial stiffness in midlife, with adult BP showing the strongest association. The triglyceride–glucose index partially mediates this relationship, especially in males. These findings highlight the importance of early BP control and metabolic health
Yang Wang   +25 more
wiley   +1 more source

Time-Frequency Analysis, Denoising, Compression, Segmentation, and Classification of PCG Signals

open access: yesIEEE Access, 2020
Phonocardigraphy (PCG) is the graphical representation of heart sounds. The PCG signal contains useful information about the functionality and the condition of the heart. It also provides an early indication of potential cardiac abnormalities. Extracting
Tanzil Hoque Chowdhury   +2 more
doaj   +1 more source

Time-frequency scaling transformation of the phonocardiogram based of the matching pursuit method.

open access: yes, 1998
International audienceA time-frequency scaling transformation based on the matching pursuit (MP) method is developed for the phonocardiogram (PCG). The MP method decomposes a signal into a series of time-frequency atoms by using an iterative process. The
A.G. Clark   +25 more
core   +1 more source

Vital sign monitoring and cardiac triggering at 1.5 Tesla: A practical solution by an MR-ballistocardiography fiber-optic sensor [PDF]

open access: yes, 2019
This article presents a solution for continuous monitoring of both respiratory rate (RR) and heart rate (HR) inside Magnetic Resonance Imaging (MRI) environments by a novel ballistocardiography (BCG) fiber-optic sensor.
Fajkus, Marcel   +3 more
core   +1 more source

Carotid and regional arterial stiffness and dementia‐related imaging biomarkers in the Multi‐Ethnic Study of Atherosclerosis (MESA)

open access: yesAlzheimer's &Dementia, Volume 21, Issue 10, October 2025.
Abstract INTRODUCTION Arterial stiffness measured within various arterial beds may be differentially associated with neuroimaging biomarkers of dementia. METHODS We related carotid and regional (cardio‐ankle vascular index [CAVI] and heart‐ankle pulse wave velocity [haPWV]) arterial stiffness measures to biomarkers (gray matter volume [GMV], white ...
Sheina Emrani   +18 more
wiley   +1 more source

Rivero-Carvallo Sign in Bioprosthetic Tricuspid Valve Stenosis

open access: yesJACC: Case Reports, 2023
In a case with bioprosthetic tricuspid stenosis, simultaneous phonocardiogram and Doppler recordings revealed that the louder diastolic rumble in inspiration (Rivero-Carvallo sign) is related to increased tricuspid gradient caused by less prominent ...
Kazuhito Hirata, MD   +2 more
doaj   +1 more source

Model Identifkasi Sinyal Jantung Pertama (S1) dan Sinyal Jantung Kedua (S2) pada Janin

open access: yesJurnal Rekayasa Elektrika, 2020
Process of identifying fetal heart sound signals is imperative in recognizing congenital heart function that caused by many factors, such as hereditary factors and food intake of pregnant mothers.
Ira Puspasari   +3 more
doaj   +1 more source

Phonocardiogram segmentation by using an hybrid RBF-HMM model [PDF]

open access: yes, 2007
This paper is concerned to the segmentation of heart sounds by using Radial-Basis Functions for acoustical modelling, combined with a Hidden Markov Model for heart sounds sequence modelling.
Cardoso, Manuel J., Lima, C. S.
core  

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