A5029804568- Retinal Imaging and Analysis
- Retinal Diseases and Treatments
- Glaucoma and retinal disorders
- Medical Imaging Techniques and Applications
- Phonocardiography and Auscultation Techniques
- Retinal and Optic Conditions
- Radiation Detection and Scintillator Technologies
- Advanced X-ray and CT Imaging
- Respiratory and Cough-Related Research
- Music and Audio Processing
- Hemodynamic Monitoring and Therapy
- Electrical and Bioimpedance Tomography
- Radiation Dose and Imaging
- Atomic and Subatomic Physics Research
- Health, Nursing, Elderly Care
- Radiomics and Machine Learning in Medical Imaging
- ECG Monitoring and Analysis
- Retinopathy of Prematurity Studies
- Cerebrovascular and Carotid Artery Diseases
- Flow Measurement and Analysis
- Acute Ischemic Stroke Management
- Industrial Vision Systems and Defect Detection
- Non-Invasive Vital Sign Monitoring
- Infrared Target Detection Methodologies
- Voice and Speech Disorders
Universidade Federal Fluminense
2025
Association for Innovation and Biomedical Research on Light and Image
2011-2024
Universidade Federal do Piauí
2024
Hospitais da Universidade de Coimbra
2022
University of Coimbra
2010-2022
Escola Superior de Saúde Ribeiro Sanches
2016
Centro de Estudos em Geografia e Ordenamento do Territorio
2009
University of Lisbon
2009
Over the last few decades, there has been significant interest in automatic analysis of respiratory sounds. However, currently are no publicly available large databases with which new algorithms can be evaluated and compared. Further developments field dependent on creation such databases.This paper describes a public sound database, was compiled for an international competition, first scientific challenge IFMBE's International Conference Biomedical Health Informatics. The database includes...
Este artigo apresenta os resultados de pesquisa iniciação científica, mapeando como a campanha Setembro Amarelo, sensibilização ao suicídio, influi sobre o noticiário no que diz respeito à morte autoprovocada na mídia, em setembro 2023. Com suporte da metodologia análise conteúdo, observou-se que, comparação entre jornais nativos digitais (Terra e Metrópoles) tradicionais (Folha S. Paulo O Globo), segundos apresentaram maior volume conteúdos responsáveis, alinhados às diretrizes Organização...
O presente Trabalho de Conclusão Curso (TCC) aborda o tema da Entrega Legalno Brasil, um dispositivo jurídico que permite às genitoras ou responsáveisentregarem seus filhos para adoção forma voluntária e segura, protegendo-os doabandono do aborto ilegal. Apesar sua relevância sistema proteçãoda infância, a Legal enfrenta desafios limitam eficácia, como faltade informação, estigmatização social barreiras institucionais. Este estudo propõeanalisar as lacunas existentes no brasileiro...
In this work thirty features were tested in order to identify the best feature set for robust detection of wheezes. The include wheezes signature spectrogram space (WS-SS) and twenty-nine musical usually used context Music Information Retrieval. method proposed detect imposes a temporal Gaussian regularization reduction false positives based on (geodesic) morphological opening by reconstruction operator. Our dataset contains wheezes, crackles normal breath sounds. Four selection algorithms...
The objective of this study was to evaluate the prevalence different disease pathways (ischemia, neurodegeneration, and edema) in initial stages diabetic retinopathy. In retrospective cross-sectional study, eyes were grouped by retinopathy severity using 7-field Early Treatment Diabetic Retinopathy Study (ETDRS) protocol (levels 10-20, 35, 43-47). Neurodegeneration identified thinning retinal nerve fiber layer and/or ganglion cell layer. Edema thickening inner nuclear layer, outer plexiform...
Purpose: To characterize 2-year changes occurring in neurodegeneration, edema, and capillary dropout nonproliferative diabetic retinopathy. Methods: Two-year prospective longitudinal observational cohort of eyes/patients with type 2 diabetes using spectral domain optical coherence tomography (SD-OCT) angiography (OCTA). Eyes were examined three times intervals 1 year. Thickness the full retina layer-by-layer measurements used to identify edema or neurodegeneration. OCTA vessel density maps...
Purpose To test whether a single or composite set of parameters evaluated with optical coherence tomography angiography (OCTA), representing retinal capillary closure, can predict non-proliferative diabetic retinopathy (NPDR) staging according to the gold standard ETDRS grading scheme. Methods 105 patients diabetes, either without different degrees (NPDR up grade 53), were prospectively using swept-source OCTA (SS-OCTA, PlexElite, Carl Zeiss Meditec) 15×9 mm and 3×3 protocols. Seven-field...
Purpose: To identify progression of nonproliferative diabetic retinopathy (NPDR) in patients with type 2 diabetes by combining optical coherence tomography angiography (OCTA) metrics and color fundus photography (CFP) images. Methods: This study was a post hoc analysis prospective longitudinal cohort (CORDIS, NCT03696810) 2-year duration. enrolled 122 eyes. Ophthalmological examinations included OCTA CFP. skeletonized vessel density (SVD) perfusion (PD) at the superficial capillary plexus...
The automatic detection of adventitious lung sounds is a valuable tool to monitor respiratory diseases like chronic obstructive pulmonary disease. Crackles are and explosive that usually associated with the inflammation or infection small bronchi, bronchioles alveoli. In this study multi-feature approach proposed for events, in frame space, contain one more crackles. performance thirty-five features was tested. These include thirty-one used context Music Information Retrieval, wavelet based...
Electrical impedance tomography (EIT) is increasingly used in patients suffering from respiratory disorders during pulmonary function testing (PFT). The EIT chest examinations often take place simultaneously to conventional PFT which the involuntarily move order facilitate their breathing. Since influence of torso and arm movements on unknown, we studied this effect 13 healthy subjects (37 ± 4 years, mean age SD) 15 with obstructive lung diseases (72 8 years) stable tidal We carried out an...
Analysis of retinal microaneurysm turnover (MAT) has been previously shown to contribute the identification eyes at risk developing clinically significant complications associated with diabetic retinopathy (DR). We propose further characterize MAT as a predictive biomarker DR progression and development vision-threatening complications.
Retinal vessel metrics identifying microvascular changes such as closure (VC) have shown potential clinical value by eyes with diabetic retinopathy (DR) at different severity levels and increased risk for disease progression to more severe stages. We compare the performance of 11 metrics, which include 2 supplied manufacturer, based on OCTA identification VC in Early Treatment Diabetic Retinopathy Study (ETDRS) groups. en-face slabs from 84 healthy (70 ± 4.8 years) 78 individuals (67 7.5...
The aim of the study was to identify retinal microvascular changes using optical coherence tomography angiography (OCTA) in type 2 diabetes (T2D) patients with preclinical retinopathy identified by ultra-widefield fundus photography (UWF-FP).This is a cross-sectional observational study. All underwent UWF-FP 200° examinations OPTOS California (Optos, Dunfermline, UK) and Cirrus AngioPlex® spectral-domain (SD)-OCTA 3 × mm acquisitions (ZEISS, Dublin, CA, USA). absence visible lesions...
To examine retinal vessel closure metrics and neurodegenerative changes occurring in the initial stages of nonproliferative diabetic retinopathy (NPDR) severity progression a three-year period. Methods: Three-year prospective longitudinal observational cohort individuals with type 2 diabetes (T2D), one eye per person, using spectral domain-optical coherence tomography (SD-OCT) OCT-Angiography (OCTA). Eyes were examined four times one-year intervals. OCTA density maps retina used to quantify...
The aim of this study was to explore the relation between retinal neurodegenerative changes and vessel closure (VC) in individuals with nonproliferative diabetic retinopathy (NPDR) a follow-up period 3 years.This is 3-year prospective longitudinal four annual visits.This involved 74 type 2 diabetes, NPDR, Early Treatment Diabetic Retinopathy Study grades from 10 47, one eye/person. An age-matched healthy control population 84 eyes used as group.Participants were annually examined by color...
Diabetic retinopathy (DR) is a frequent complication of diabetes and, through its vision-threatening complications, i.e., macular edema and proliferative retinopathy, may lead to blindness. It is, therefore, major relevance identify the presence in diabetic patients when present, eyes that have greatest risk progression potential benefit from treatment. In present paper, we suggest development simple use alternative Early Treatment Retinopathy Study (ETDRS) grading system, establishing...
Purpose: To determine the degree of central microvascular closure using optical coherence tomography angiography (OCTA) in eyes type 2 diabetes patients with visible lesions only retina or periphery. Methods: Cross-sectional study. All 127 underwent Ultra-Widefield Fundus Photography (UWF-FP) 200° examinations OPTOS California (Optos, Dunfermline, UK) and Cirrus Angioplex OCT-Angiography 3x3mm acquisitions (ZEISS, Dublin, CA, USA). Results: Twenty-five showed (inside 7-ETDRS fields area), 57...
We present a new method for the discrimination of explosive cough events, which is based on combination spectral content descriptors and pitch-related features. After removal near-silent segments, vector event boundaries obtained proposed set 9 features extracted each event. Two data sets, recorded using electronic stethoscopes comprising total 46 healthy subjects 13 patients, were employed to evaluate method. The feature compared three other sets descriptors: baseline, both an automatic...
The global inhomogeneity (GI) index is a electrical impedance tomography (EIT) parameter that quantifies the tidal volume distribution within lung. In this work was computed for twenty subjects in order to evaluate his potential use detection and follow up of chronic obstructive pulmonary disease (COPD) patients. EIT data 17 were acquired: 14 patients with main diagnoses COPD 3 healthy which served as control group. Two or three datasets around 30 seconds acquired at 33 scans/s analysed each...