Listar GI-VARPA - Congresos, conferencias, etc. por autor "Ortega Hortas, Marcos"
Mostrando ítems 1-20 de 74
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3D Retinal Vessel Tree Segmentation and Reconstruction with OCT Images
Moura, Joaquim de; Novo Buján, Jorge; Ortega Hortas, Marcos; Charlón, Pablo (Springer, 2016-07-01)[Absctract]: Detection and analysis of the arterio-venular tree of the retina is a relevant issue, providing useful information in procedures such as the diagnosis of different pathologies. Classical approaches for vessel ... -
Analysis of Imbalanced Datasets in the Performance of Deep Learning Approaches for COVID-19 Screening from Chest X-ray Imaging: Impact of Sex and Age Factors
Álvarez-Rodríguez, Lorena; Moura, Joaquim de; Ramos, Lucía; Novo Buján, Jorge; Ortega Hortas, Marcos (EasyChair, 2023-02-16)[Absctract]: In this work, we analysed 11 imbalance scenarios with female and male COVID-19 patients present in different proportions for the sex analysis, and 6 scenarios where only one specific age range was used for ... -
Analysis of Separability of COVID-19 and Pneumonia in Chest X-ray Images by Means of Convolutional Neural Networks
Moura, Joaquim de; Ramos, Lucía; Vidal, Plácido; Novo Buján, Jorge; Ortega Hortas, Marcos (MDPI AG, 2020-08-21)[Abstract] The new coronavirus (COVID-19) is a disease that is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). On 11 March 2020, the coronavirus outbreak has been labelled a global pandemic by the ... -
Análisis de datos multimodales para la toma de decisiones clínicas utilizando Inteligencia Artificial en el contexto de la COVID-19
Iglesias Morís, Daniel; Moura, Joaquim de; Marcos, Pedro J.; Míguez-Rey, Enrique; Novo Buján, Jorge; Ortega Hortas, Marcos (2023-12-14)[Abstract]: La COVID-19 es una enfermedad pulmonar infecciosa causante de la pandemia mundial del año 2020. En los momentos críticos de las emergencias sanitarias, el equipo médico debe tomar decisiones importantes en un ... -
Artery/vein classification of blood vessel tree in retinal imaging
Moura, Joaquim de; Novo Buján, Jorge; Ortega Hortas, Marcos; Barreira, Noelia; Charlón, Pablo (SCITEPRESS – Science and Technology Publications, 2017)[Absctract]: Alterations in the retinal microcirculation are signs of relevant diseases such as hypertension, arteriosclerosis, or diabetes. Specifically, arterial constriction and narrowing were associated with early ... -
Automated segmentation of the central serous chorioretinopathy fluid regions using optical coherence tomography scans
Moura, Joaquim de; Novo Buján, Jorge; Ortega Hortas, Marcos; Barreira, Noelia; Charlón, Pablo (Institute of Electrical and Electronics Engineers Inc., 2021)[Abstract]: Central serous chorioretinopathy is one of the most frequent causes of vision impairment among middle-aged adults. Optical Coherence Tomography (OCT) is a non-invasive diagnostic technique that is commonly used ... -
Automatic Characterization of Epiretinal Membrane in OCT Images with Supervised Training
Baamonde, Sergio; Moura, Joaquim de; Novo Buján, Jorge; Barreira, Noelia; Ortega Hortas, Marcos (MDPI, 2018-09)[Abstract]: This work presents an automatic method to characterize the presence or absence of the epiretinal membrane (ERM) in Optical Coherence Tomography (OCT) images. To this end, a predefined set of classifiers is used ... -
Automatic Characterization of the serous Retinal Detachment Associated with the subretinal Fluid Presence in Optical Coherence Tomography Images
Moura, Joaquim de; Novo Buján, Jorge; Penas, Susana; Ortega Hortas, Marcos; Silva, Jorge; Mendonça, Ana Maria (Elsevier B.V., 2018)[Abstract]: An accurate detection of the macular edema (ME) presence constitutes a crucial ophthalmological issue as it provides useful information for the identification, diagnosis and treatment of different relevant ... -
Automatic Deep Learning-based Models for Retinal Layer Thickness Analysis as a Biomarker for Neurodegenerative Diseases
Gende, M.; Moura, Joaquim de; Cordón Ciordia, Beatriz; Viladés, Elisa; García-Martín, Elena; Sánchez, Clara I.; Novo Buján, Jorge; Ortega Hortas, Marcos (ARVO (Association for Research in Vision and Ophthalmology), 2023-06)Purpose : The retina is the most accessible part of the central nervous system, allowing its non-invasive exploration and measurement. Optical Coherence Tomography (OCT) offers an objective monitoring method of progression ... -
Automatic Detection of Blood Vessels in Retinal OCT Images
Moura, Joaquim de; Novo Buján, Jorge; Rouco, J.; Penedo, Manuel; Ortega Hortas, Marcos (Springer Verlag, 2017-06)[Abstract]: The eye is a non-invasive window where clinicians can observe and study in vivo the retinal vasculature, allowing the early detection of different relevant pathologies. In this paper, we present a complete ... -
Automatic Detection of Epiretinal Membrane in OCT Images by Means of Local Luminosity Patterns
Baamonde, Sergio; Moura, Joaquim de; Novo Buján, Jorge; Ortega Hortas, Marcos (Springer, 2017-05-18)[Absctract]: This work presents a novel approach for automatic detection of the epiretinal membrane in Optical Coherence Tomography (OCT) images. A tool able to detect this pathology is very valued since it can prevent ... -
Automatic extraction of vascularity measurements using OCT-A images
Díaz González, Macarena; Novo Buján, Jorge; Penedo, Manuel; Ortega Hortas, Marcos (Elsevier, 2018)[Absctract]: Optical Coherence Tomography Angiography (OCT-A) represents a new modality of ophthalmological imaging that stands out for being a non-invasive capture technique that facilitates the analysis of the vascular ... -
Automatic identification and classification of diabetic macular edema using optical coherence tomography images
Fernández, María Isabel; Ortega Hortas, Marcos; Almuiña, Pablo; Gil Martínez, María; Moura, Joaquim de; Samagaio, Gabriela; Novo Buján, Jorge; Rodríguez Cid, María José; Abraldes, Maximino; Gómez-Ulla, Francisco (2019-09)[Absctract]: The automatic identification of the progressive intraretinal fluid accumulation constitutes a crucial ophthalmological issue as it provide useful information for the diagnosis, treatment and monitoring of the ... -
Automatic Identification and Segmentation of Diffuse Retinal Thickening Macular Edemas Using OCT Imaging
Samagaio, Gabriela; Moura, Joaquim de; Novo Buján, Jorge; Ortega Hortas, Marcos (MDPI, 2018)[Abstract]: This paper proposes a novel methodology for the automatic identification and segmentation of the Diffuse Retinal Thickening (DRT) edemas using Optical Coherence Tomography (OCT) images as source of information. ... -
Automatic Identification of Diabetic Macular Edema Biomarkers Using Optical Coherence Tomography Scans
Moura, Joaquim de; Samagaio, Gabriela; Novo Buján, Jorge; Charlón, Pablo; Fernández, María Isabel; Gómez-Ulla, Francisco; Ortega Hortas, Marcos (Springer, 2020)[Abstract]: Optical Coherence Tomography (OCT) imaging has revolutionized the daily clinical practice, especially in the field of ophthalmology. Diabetic Macular Edema (DME) is one of the most important complications of ... -
Automatic Identification of Diabetic Macular Edema Using a Transfer Learning-Based Approach
Moura, Joaquim de; Vidal, Plácido; Novo Buján, Jorge; Ortega Hortas, Marcos (MDPI AG, 2019-07-31)[Abstract] This paper presents a complete system for the automatic identification of pathological Diabetic Macular Edema (DME) cases using Optical Coherence Tomography (OCT) images as source of information. To do so, the ... -
Automatic Identification of Intraretinal Cystoid Regions in Optical Coherence Tomography
Moura, Joaquim de; Novo Buján, Jorge; Rouco, J.; Penedo, Manuel; Ortega Hortas, Marcos (Springer, 2017-05)[Absctract]: Optical Coherence Tomography (OCT) is, nowadays, one of the most referred ophthalmological imaging techniques. OCT imaging offers a window to the eye fundus in a non-invasive way, permitting the inspection of ... -
Automatic Identification of Macular Edema in Optical Coherence Tomography Images
Samagaio, Gabriela; Estévez, Aída; Moura, Joaquim de; Novo Buján, Jorge; Ortega Hortas, Marcos; Fernández, María Isabel (SCITEPRESS – Science and Technology Publications, 2018)[Absctract]: This paper proposes a novel system for the simultaneous identification and characterization of the three types of Macular Edema (ME) in Optical Coherence Tomography (OCT). These MEs are clinically defined, ... -
Automatic Retinal Vascularity Identification and Artery/Vein Classification Using Near-Infrared Reflectance Retinographies
Moura, Joaquim de; Novo Buján, Jorge; Ortega Hortas, Marcos; Barreira, Noelia; Charlón, Pablo (Springer, 2019-01)[Absctract]: The retinal microcirculation structure is commonly used as an important source of information in many medical specialities for the diagnosis of relevant diseases such as, for reference, hypertension, ... -
Automatic Segmentation and Visualisation of the Epirretinal Membrane in OCT Scans Using Densely Connected Convolutional Networks
Gende, M.; Moura, Joaquim de; Novo Buján, Jorge; Charlón, Pablo; Ortega Hortas, Marcos (MDPI, 2021)[Abstract] The Epiretinal Membrane (ERM) is an ocular disease that appears as a fibro-cellular layer of tissue over the retina, specifically, over the Inner Limiting Membrane (ILM). It causes vision blurring and distortion, ...