Udantha R. Abeyratne

ORCID: 0000-0003-0137-7996
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Obstructive Sleep Apnea Research
  • Speech and Audio Processing
  • EEG and Brain-Computer Interfaces
  • Neuroscience of respiration and sleep
  • Voice and Speech Disorders
  • Respiratory and Cough-Related Research
  • Sleep and Wakefulness Research
  • Blind Source Separation Techniques
  • Phonocardiography and Auscultation Techniques
  • Infant Health and Development
  • Neural Networks and Applications
  • Music and Audio Processing
  • Medical Image Segmentation Techniques
  • Neuroscience and Neural Engineering
  • Respiratory viral infections research
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Ultrasound Imaging and Elastography
  • Image and Signal Denoising Methods
  • Image and Object Detection Techniques
  • Non-Invasive Vital Sign Monitoring
  • Spectroscopy and Chemometric Analyses
  • Pneumonia and Respiratory Infections
  • Pediatric health and respiratory diseases
  • Time Series Analysis and Forecasting
  • Emergency and Acute Care Studies

The University of Queensland
2014-2024

Queensland University of Technology
2011-2022

Bangladesh University of Engineering and Technology
2017

Nanyang Technological University
1999-2005

Tokushima University
1991-2005

Drexel University
1994-2002

University of Peradeniya
1989

The differential diagnosis of paediatric respiratory conditions is difficult and suboptimal. Existing diagnostic algorithms are associated with significant error rates, resulting in misdiagnoses, inappropriate use antibiotics unacceptable morbidity mortality. Recent advances acoustic engineering artificial intelligence have shown promise the identification based on sound analysis, reducing dependence support services clinical expertise. We present results a accuracy study for disease using...

10.1186/s12931-019-1046-6 article EN cc-by Respiratory Research 2019-06-05

Pneumonia is the cause of death for over a million children each year around world, largely in resource poor regions such as sub-Saharan Africa and remote Asia. One biggest challenges faced by pneumonia endemic countries absence field deployable diagnostic tool that rapid, low-cost accurate. In this paper, we address issue propose method to screen based on mathematical analysis cough sounds. particular, novel feature inspired wavelet-based crackle detection work lung sound analysis. These...

10.1109/tbme.2014.2381214 article EN IEEE Transactions on Biomedical Engineering 2014-12-19

Croup, a respiratory tract infection common in children, causes an inflammation of the upper airway restricting normal breathing and producing cough sounds typically described as seallike "barking cough." Physicians use existence barking defining characteristic croup. This paper aims to develop automated sound analysis methods objectively diagnose croup.In automating croup diagnosis, we propose mathematical features inspired by human auditory system. In particular, utilize cochleagram for...

10.1109/tbme.2018.2849502 article EN IEEE Transactions on Biomedical Engineering 2018-06-21

Obstructive sleep apnea (OSA) is a highly prevalent disease in which upper airways are collapsed during sleep, leading to serious consequences. The gold standard of diagnosis, called polysomnography (PSG), requires full-night hospital stay connected over ten channels measurements requiring physical contact with sensors. PSG inconvenient, expensive and unsuited for community screening. Snoring the earliest symptom OSA, but its potential clinical diagnosis not fully recognized yet. Diagnostic...

10.1088/0967-3334/26/5/016 article EN Physiological Measurement 2005-07-06

We address the problem of improving spatial resolution ulrasound images through blind deconvolution. The ultrasound image formation process in RF domain can be expressed as a spatio-temporal convolution between tissue response and ultrasonic system response, plus additive noise. Convolutional components dispersive attenuation aberrations introduced by propagating object being imaged are also incorporated response. Our goal is to identify remove convolutional distortion order reconstruct thus...

10.1109/58.476550 article EN IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control 1995-11-01

Snoring is the most common symptom of obstructive sleep apnea hypopnea syndrome (OSAHS), which a serious disease with high community prevalence. The standard method OSAHS diagnosis, known as polysomnography (PSG), expensive and time consuming. There evidence suggesting that snore-related sounds (SRS) carry sufficient information to diagnose OSAHS. In this paper we present technique for diagnosing based solely on snore sound analysis. comprises logistic regression model fed parameters derived...

10.1088/0967-3334/32/1/006 article EN Physiological Measurement 2010-11-30

Obstructive sleep apnea (OSA) is a highly prevalent disease in which upper airways are collapsed during sleep, leading to serious consequences. Snoring the earliest symptom of OSA, but its potential clinical diagnosis not fully recognized yet. The first task automatic analysis snore-related sounds (SRS) segment SRS data as accurately possible into three main classes: snoring (voiced non-silence), breathing (unvoiced non-silence) and silence. generally contaminated with background noise. In...

10.1088/0967-3334/29/2/006 article EN Physiological Measurement 2008-01-23

Pneumonia and asthma are the common diseases in pediatric population. The share some similarities of symptoms that make them difficult to separate without proper diagnostic tools. majority pneumonia cases occur third world countries wherein even basic tools (e.g.: x-ray) extremely rare. In these countries, WHO recommends using rapid breathing chest in-drawing as approach diagnose children with cough. As results, many patients were misdiagnosed prescribed for unnecessary antibiotic treatment....

10.1109/isms.2015.41 article EN 2015-02-01

Obstructive sleep apnea (OSA) is a serious disorder with high community prevalence. More than 80% of OSA suffers remain undiagnosed. Polysomnography (PSG) the current reference standard used for diagnosis. It expensive, inconvenient and demands extensive involvement technologist. At present, low cost, unattended, convenient screening technique an urgent requirement. Snoring always almost associated one earliest nocturnal symptoms. With onset sleep, upper airway undergoes both functional...

10.1088/0967-3334/34/2/99 article EN Physiological Measurement 2013-01-23

Spirometry is a commonly used method of measuring lung function. It useful in the definitive diagnosis diseases such as asthma and chronic obstructive pulmonary disease (COPD). However, spirometry requires cooperative patients, experienced staff, repeated testing to ensure consistency measurements. There discomfort associated with some patients are not able complete test. In this paper, we investigate possibility using cough sound analysis for prediction measurements.Our approach based on...

10.1088/1361-6579/aad948 article EN Physiological Measurement 2018-08-09

The authors model tissue as a collection of point scatterers embedded in uniform media, and show that the higher-order statistics (HOS) scatterer spacing distribution can be estimated from digitized radio frequency (RF) scan line segments used obtaining signatures. assume RF echoes are non-Gaussian, on grounds empirical/theoretical justifications presented literature. Based their for microstructure, develop schemes estimation reasonable periodicity well correlations among nonperiodic...

10.1109/42.511751 article EN IEEE Transactions on Medical Imaging 1996-01-01

10.1007/s11517-007-0186-x article EN Medical & Biological Engineering & Computing 2007-07-12

Cough is the most common symptom of several respiratory diseases containing diagnostic information. It best suitable candidate to develop a simplified screening technique for management in timely manner, both developing and developed countries, particularly remote areas where medical facilities are limited. However, major issue hindering development non-availability reliable automatically identify cough events. Medical practitioners still rely on manual counting, which laborious time...

10.1109/embc.2013.6609862 article EN 2013-07-01

Snoring is one of the earliest symptoms Obstructive Sleep Apnea (OSA). However, unavailability an objective snore definition a major obstacle in developing automated analysis system for OSA screening. The objectives this paper to develop method identify and extract sounds from continuous sound recording following that independent loudness. Nocturnal 34 subjects were recorded using non-contact microphone computerized data-acquisition system. Sound data divided into non-overlapping training (n...

10.1109/embc.2017.8037444 article EN 2017-07-01

Severities of obstructive sleep apnea (OSA) estimated both for the overall duration and time spent in rapid eye movement (REM) non-rapid (NREM) are important managing disease. The objective this study is to investigate a method by which snore sounds can be analyzed detect presence OSA NREM REM sleep.

10.5664/jcsm.7168 article EN Journal of Clinical Sleep Medicine 2018-06-14

Introduction: Asthma is a common childhood respiratory disorder characterized by wheeze, cough and distress responsive to bronchodilator therapy. severity can be determined subjective, manual scoring systems such as the Pulmonary Score (PS). These require significant medical training expertise rate clinical findings wheeze characteristics, work of breathing. In this study, we report development an objective method assessing acute asthma based on automated analysis sounds.Methods: We...

10.1080/02770903.2019.1684516 article EN Journal of Asthma 2019-10-23
Coming Soon ...