Results 31 to 40 of about 1,083,600 (194)

The graphical visualization of lung sounds using a combination of lines and circles.

open access: yes, 2023
A diagram showing inspiration and expiration was used to visualize the lung sounds. In the diagram, the vertical axis represents the pitch of lung sounds and the horizontal axis represents the duration of lung sounds.
Ayaka Kuriyama (9663554)   +9 more
core   +1 more source

A two-stage amplified PZT sensor for monitoring lung and heart sounds in discharged pneumonia patients

open access: yesMicrosystems & Nanoengineering, 2021
Assessment of lung and heart states is of critical importance for patients with pneumonia. In this study, we present a small-sized and ultrasensitive accelerometer for continuous monitoring of lung and heart sounds to evaluate the lung and heart states ...
Hongbin Chen   +9 more
doaj   +1 more source

Detection of pathological mechano-acoustic signatures using precision accelerometer contact microphones in patients with pulmonary disorders

open access: yesScientific Reports, 2021
Monitoring pathological mechano-acoustic signals emanating from the lungs is critical for timely and cost-effective healthcare delivery. Adventitious lung sounds including crackles, wheezes, rhonchi, bronchial breath sounds, stridor or pleural rub and ...
Pranav Gupta   +3 more
doaj   +1 more source

Investigation of Lung Sounds Features for Detection of Bronchitis and COPD Using Machine Learning Methods

open access: yesVìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2021
The study is dedicated to the issue of investigation of the lung sounds digital analysis processing methods, searching for new informative features of pathological respiratory sounds and using machine learning methods for classifying the state of the ...
H. S. Porieva   +3 more
doaj   +1 more source

Homogenization of a Model for the Propagation of Sound in the Lungs [PDF]

open access: yesMultiscale Modeling & Simulation, 2015
In this paper, we are interested in the mathematical modeling of the propagation of sound waves in the lung parenchyma, which is a foam-like elastic material containing millions of air-filled alveoli. In this study, the parenchyma is governed by the linearized elasticity equations, and the air by the acoustic wave equations.
Cazeaux, Paul   +2 more
openaire   +3 more sources

Heart and Lung Sound Measurement Using an Esophageal Stethoscope with Adaptive Noise Cancellation

open access: yesSensors, 2021
In surgeries where general anesthesia is required, the auscultation of heart and lung sounds is essential to provide information on the patient’s cardiorespiratory system.
Nourelhuda Mohamed   +5 more
doaj   +1 more source

Development of an Electronic Stethoscope and a Classification Algorithm for Cardiopulmonary Sounds

open access: yesSensors, 2022
With conventional stethoscopes, the auscultation results may vary from one doctor to another due to a decline in his/her hearing ability with age or his/her different professional training, and the problematic cardiopulmonary sound cannot be recorded for
Yu-Chi Wu   +7 more
doaj   +1 more source

AR (q, v) Modeling of Normal Lung Sounds

open access: yes, 1994
:A model for the dependence of normal lung sounds upon airflow and air volume recorded at the mouth, is proposed and investigated. Data from 8 healthy subjects and 2 sessions have been analysed.
J. Vanderschoot, H. J. W. Schreur
core   +1 more source

Lung Sounds Classification Based on Time Domain Features [PDF]

open access: yes, 2022
Signal complexity in lung sounds is assumed to be able to differentiate and classify characteristic lung sound between normal and abnormal in most cases.
Rizal, Achmad   +3 more
core   +1 more source

The correlations of the breath sound with the depth of respiratory and the medical condition of atelectasis [PDF]

open access: yes, 2011
In this paper, we report one of the methods to distinguish patient’s atelectasis condition from the normal condition based on the spectral analysis of the auscultation by the electric stethoscope. Atelectasis is a respiratory collapse defined as the lack
薗田, 光太郎   +4 more
core  

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