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Publications (29)
Background
Fiber optic dosimetry (FOD) has emerged as a useful technique that can be used in those cases when intracavitary, real time, high spatial resolution dose assessment is required. Among the several factors characterizing a dosimeter, angular response of FOD probes has to be assessed in order to consider possible clinical application.
Purp...
The automatic discovery of behaviour is of high importance when aiming to assess and improve the quality of life of people. Egocentric images offer a rich and objective description of the daily life of the camera wearer. This work proposes a new method to identify a person's patterns of behaviour from collected egocentric photo-streams. Our model c...
The automatic discovery of behaviour is of high importance when aiming to assess and improve the quality of life of people. Egocentric images offer a rich and objective description of the daily life of the camera wearer. This work proposes a new method to identify a person’s patterns of behaviour from collected egocentric photo-streams. Our model c...
En la yegua, la endometritis aguda post-servicio es una respuesta fisiológica del endometrio necesaria para la remoción del semen. Cuando la inflamación persiste por más de 48 horas post-servicio, se vuelve patológica. Así, se clasifica a las yeguas en susceptibles (YS) o resistentes (YR) a endometritis persistente según su capacidad para resolver...
IntraVascular UltraSound (IVUS) is a technique allowing the diagnosis of coronary plaque. An accurate (semi-)automatic assessment of the luminal contours could speed up the diagnosis. In most of the approaches, the information on the vessel shape is obtained combining a supervised learning step with a local refinement algorithm. In this paper, we e...
The Intima-Media Thickness of the Carotid Artery (CIMT) is a very important
indicator of cardiovascular diseases. Ultrasound Imaging is used to measure CIMT
since its advantages: real time, low-cost, reliable, innocuous and noninvasive. CIMT
measurements can be used for screening or diagnostic purposes, both using manual,
semi-automatic or automati...
En la actualidad los dispositivos de captura de modalidades médicas llegan a generar imágenes digitales de gran resolución o estudios con múltiples cortes que pueden ocupar algunos gigabytes. Para la gestión y distribución de las imágenes en formato Digital Imaging and Communication in Medicine (DICOM), las instituciones de salud recurren a la util...
Preventive maintenance of biomedical devices is of particular concern to avoid failures and breakdowns, especially for critical care and life supporting devices. Signs of potential failures are not always visible and so, they should be inspected and tested periodically using the appropriate technology. Patient simulators have become one of the esse...
La utilización de algoritmos desarrollados para la asistencia al diagnóstico por imágenes médicas dentro del sistema de salud muchas veces se ve limitada por la falta de un entorno de ejecución fuertemente orientado a la aplicación clínica. En este contexto, se presenta el desarrollo de una plataforma extensible para consulta y visualización de imá...
Medical imaging devices render high resolution images and studies containing multiple images within, like CT, MRI and others. The use of PACS is the most suitable option for communication of medical image data over a hospital network. Today a steadily increasing number of applications require image transmission over public networks outside the hosp...
En este trabajo se presenta un conjunto de técnicas de procesamiento digital de imágenes para segmentar y caracterizar regiones de interés en imágenes termográficas para evaluación en aplicaciones de diagnóstico temprano de lesiones mamarias. En las termografías las zonas de temperatura uniforme respecto a su contorno conforman regiones de interés...
In this work a parallelization technique for Monte Carlo calculation of the radiation absorbed dose is presented. The proposed method reduces the overall time of calculation exploiting the probabilistic nature of the problem. Reducing dose calculation times to meet practical application of use of results is a topic of great interest in the Monte Ca...
Using Web-PACS has become an attractive option that brings access to medical imaging databases from remote hosts. However, the big size of the medical images to be transmitted impacts negatively on the teleradiologist experience by increasing the dead times elapsed between study request and visualization on the screen. In this context, it is of the...
The vector representation algorithm (VRA) has been employed for classifying textures of two regions of the proximal femur,
i.e., the Ward’s triangle (WT) and the principal compressive group (PCG), in order to assess whether it is appropriate to
discriminate changes in trabecular textures of healthy, osteopenic and osteoporotic patients.
En este trabajo se presenta el desarrollo y la implementación de un PACS en un centro radiológico de pequeña escala, el cual integra las diferentes modalidades digitales o analógicas ya existentes a un servidor de archivo, un servidor de listas de tareas y un conjunto de estaciones de procesamiento y visualización. Se recurre a diferentes component...
Ionizing radiation therapy is a very useful tool in cancer treatment. It is very important to determine absorbed dose in human tissue to accomplish an effective treatment. A mathematical model based on affected areas is the most suitable tool to estimate the absorbed dose. Lately, Monte Carlo based techniques have become the most reliable, but they...
RESUMEN La terapia mediante radiaciones ionizantes, usualmente radiación gamma, rayos X y electrones, es una práctica médica muy utilizada para tratamiento contra el cáncer, ya que se aprovechan los beneficios de los efectos de la radiación ionizante sobre las células para destruir tejidos tumorales. La determinación de la dosis absorbida en un med...
