Recursos de colección

Archivo Digital UPM (114.837 recursos)

This is an institutional repository providing access to the research output of the institution. Primarily contains thesis.

Materia = Medicina

Mostrando recursos 1 - 7 de 7

  1. Mejoras en el procesamiento de imágenes de TC para el tratamiento con radioterapia adaptativa del cáncer de próstata

    Rodríguez Vila, Borja
    El cáncer de próstata es el tipo de cáncer con mayor prevalencia entre los hombres del mundo occidental y, pese a tener una alta tasa de supervivencia relativa, es la segunda mayor causa de muerte por cáncer en este sector de la población. El tratamiento de elección frente al cáncer de próstata es, en la mayoría de los casos, la radioterapia externa. Las técnicas más modernas de radioterapia externa, como la radioterapia modulada en intensidad, permiten incrementar la dosis en el tumor mientras se reduce la dosis en el tejido sano. Sin embargo, la localización del volumen objetivo varía con...

  2. An investigation of the performance of a new Mechanical thrombectomy device using Bond Graph modelling: application to the extraction of blood clots in the middle cerebral artery

    Romero Rey, Gregorio; Martínez Muneta, María Luisa; Félez Mindán, Jesús; Pearce, Gillian; Perkinson, N.D.
    A number of thrombectomy devices using a variety of methods have now been developed to facilitate clot removal. We present research involving one such experimental device recently developed in the UK, called a ‘GP’ Thrombus Aspiration Device (GPTAD). This device has the potential to bring about the extraction of a thrombus. Although the device is at a relatively early stage of development, the results look encouraging. In this work, we present an analysis and modeling of the GPTAD by means of the bond graph technique; it seems to be a highly effective method of simulating the device under a variety...

  3. Applicability of the GP Device to the Circle of Willis Arteries by Using a Mathematical Model

    Romero Rey, Gregorio; Martínez Muneta, María Luisa; Félez Mindán, Jesús; Pearce, Gillian; Perkinson, N.D.
    According to the World Health Organization, 15 million people suffer stroke worldwide each year, of these, 5 million die and 5 million are permanently disabled. Stroke is therefore a major cause of mortality world-wide. The majority of strokes are caused by a blood clot that occludes an artery in the brain, and although thrombolytic agents such as Alteplase are used to dissolve clots that arise in the arteries of the brain, there are limitations on the use of these thrombolytic agents. However over the past decade, other methods of treatment have been developed which include Thrombectomy Devices e.g. the 'GP'...

  4. Simulation of a mechanical thrombectomy device based in the use of self-expandable stents for the blood clots extraction

    Romero Rey, Gregorio; Martínez Muneta, María Luisa
    Recently, we have presented some studies concerning the analysis, design and optimization of one experimental device developed in the UK - GPTAD - which has been designed to remove blood clots without the need to make contact with the clot itself, thereby potentially reducing the risk of problems such as downstream embolisation. Based on the idea of a modification of the previous device, in this work, we present a model based in the use of stents like the SolitaireTM FR, which is in contact with the clot itself. In the case of such devices, the stent is self-expandable and the...

  5. Simulation of the GPTAD applied to the removal of blood clots that arise during Peripheral Vascular Disease

    Romero Rey, Gregorio; Higuera Reverón, Irene; Martínez Muneta, María Luisa
    A number of thrombectomy devices using a variety of methods have now been developed to facilitate clot removal. We present research involving one such experimental device recently developed in the UK, called a 'GP' thrombus-aspiration-device (GPTAD). This device has the potential to bring about the extraction of a thrombus. Although the device is at a relatively early stage of development, the results look encouraging. We present an analysis of modelling this device using modelling techniques. Such modelling appears to be highly effective in simulating the device under a variety of conditions with a view to assisting in the optimisation of...

  6. Analysis and simulation of the adhesion forces between clot and the artery wall for a novel thrombectomy device applied to the Middle Cerebral Artery

    Romero Rey, Gregorio; Higuera Reverón, Irene; Martínez Muneta, María Luisa
    A number of Thrombectomy devices using a variety of methods have now been developed to facilitate clot removal. We present research involving one such experimental device recently developed in the UK, called a 'GP' Thrombus Aspiration Device (TAD). This device has the potential to improve the process of extracting thrombosis clots in the cerebral arteries. The development of a simulation model for this device is shown using Bond-Graph formalism applied to modeling and simulating the adhesion forces between the clot and the artery wall. Bond-Graph technique is a visual methodology that adds more transparency to the processes and it has...

  7. Estudio técnico de viabilidad para diagnóstico de malaria por telepatología y procesamiento de imágenes

    García García, Rubén
    El presente PFC, desarrollado en la Pontificia Universidad Católica del Perú, explora vías para la implementación de sistemas que permitan modernizar y mejorar, utilizando imágenes digitales, el diagnóstico tradicional de malaria, clave para la mejora de las condiciones sanitarias y el progreso económico de zonas rurales aisladas, donde esta enfermedad es endémica, como la Amazonía peruana. Se contemplan dos técnicas para lograr este objetivo: Por un lado, la telepatología permite realizar diagnósticos a distancia utilizando imágenes transmitidas a través de redes de telecomunicaciones. En el Departamento de Loreto existe una red Wi-Fi que cubre más de 400 km a través...

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