{"id":39034,"date":"2018-03-09T09:38:56","date_gmt":"2018-03-09T09:38:56","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sistema-de-monitorizacion-y-deteccion-de-isquemia-basado-en-la-transformada-de-karhunen-loeve-aplicada-sobre-el-electrocardiograma-ecg\/"},"modified":"2018-03-09T09:38:56","modified_gmt":"2018-03-09T09:38:56","slug":"sistema-de-monitorizacion-y-deteccion-de-isquemia-basado-en-la-transformada-de-karhunen-loeve-aplicada-sobre-el-electrocardiograma-ecg","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/sistema-de-monitorizacion-y-deteccion-de-isquemia-basado-en-la-transformada-de-karhunen-loeve-aplicada-sobre-el-electrocardiograma-ecg\/","title":{"rendered":"Sistema de monitorizacion y deteccion de isquemia basado en la transformada de karhunen-loeve aplicada sobre el electrocardiograma (ecg)."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Garc\u00eda Moros <\/strong><\/h2>\n<p>La se\u00f1al electrocardiogr\u00e1fica (ecg) representa la actividad el\u00e9ctrica del coraz\u00f3n registrada en la superficie del cuerpo, y su an\u00e1lisis constituye la forma m\u00e1s com\u00fan de estudiar y diagnosticar cardiopat\u00edas de forma no invasiva. Esta tesis doctoral aborda el estudio y aplicaci\u00f3n de diferentes t\u00e9cnicas de procesado digital de se\u00f1ales sobre la se\u00f1al ecg para analizar la cardiopat\u00eda isqu\u00e9mica.  en la rutina cl\u00ednica, el an\u00e1lisis de la isquemia de miocardio se basa en la medida de \u00edndices locales (un \u00fanico punto del ecg). En esta tesis se han desarrollado \u00edndices derivados a partir la transformada de karhunen-lo\u00e9ve (klt) que recogen la informaci\u00f3n de forma global en todo un segmento de la se\u00f1al ecg. Se ha indicido especialmente en los diversos modos de estimar los \u00edndices de klt: mediante producto directo y de forma adaptativa (donde se han comparado las prestaciones de los algoritmos lms y rls). Adem\u00e1s se ha incluido la metodolog\u00eda desarrollada en un interfaz de usuario que puede ser utilizado por los cardi\u00f3logos como ayuda al diagn\u00f3stico cl\u00ednico.  se ha efectuado una comparaci\u00f3n, mediante la definici\u00f3n de un par\u00e1metro de sensibilidad a las variaciones isqu\u00e9micas inducidas por angioplastia, de los \u00edndices cl\u00e1sicos convencionalmente utilizados y los basados en la klt, en t\u00e9rminos de sensibilidad y evoluci\u00f3n temporal. Estos \u00faltimos han mostrado una caracterizaci\u00f3n del fen\u00f3meno de isquemia m\u00e1s amplia. Adem\u00e1s se ha estudiado la incidencia de los cambios isqu\u00e9micos en los diferentes segmentos del ecg.  tambi\u00e9n se ha analizado la capacidad de localizaci\u00f3n espacial de los diferentes \u00edndices mediante un estudio discriminante multivariado, donde de nuevo los \u00edndices basados en la klt han logrado mejores resultados.  finalmente, se ha integrado en un sistema de detecci\u00f3n la informaci\u00f3n que los \u00edndices globales derivados de la klt proporcionan de los cambios isqu\u00e9micos. Se ha descrito el<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Sistema de monitorizacion y deteccion de isquemia basado en la transformada de karhunen-loeve aplicada sobre el electrocardiograma (ecg).<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Sistema de monitorizacion y deteccion de isquemia basado en la transformada de karhunen-loeve aplicada sobre el electrocardiograma (ecg). <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Garc\u00eda Moros <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 18\/12\/1998<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Pablo Laguna Lasaosa<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: pere Caminal magrans <\/li>\n<li>sen\u00e9n Barro ameneiro (vocal)<\/li>\n<li>leif Sornmo (vocal)<\/li>\n<li>Antonio Bayes de luna (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Garc\u00eda Moros La se\u00f1al electrocardiogr\u00e1fica (ecg) representa la actividad el\u00e9ctrica del coraz\u00f3n registrada en la superficie [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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