{"id":29850,"date":"2018-03-09T09:23:10","date_gmt":"2018-03-09T09:23:10","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-computerizado-de-la-imagen-de-ecografa%c2%ada-transrectal-en-el-cancer-de-prostata-localizado\/"},"modified":"2018-03-09T09:23:10","modified_gmt":"2018-03-09T09:23:10","slug":"analisis-computerizado-de-la-imagen-de-ecografa%c2%ada-transrectal-en-el-cancer-de-prostata-localizado","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-computerizado-de-la-imagen-de-ecografa%c2%ada-transrectal-en-el-cancer-de-prostata-localizado\/","title":{"rendered":"An\u00e1lisis computerizado de la imagen de ecograf\u00edatransrectal en el c\u00e1ncer de pr\u00f3stata localizado"},"content":{"rendered":"<h2>Tesis doctoral de <strong> \u00e1lvaro G\u00f3mez-ferrer Lozano <\/strong><\/h2>\n<p>El m\u00e9todo actual de elecci\u00f3n para el diagn\u00f3stico del c\u00e1ncer de pr\u00f3stata es la biopsia transrectal ecodirigida. No obstante esta t\u00e9cnica presenta una serie de limitaciones entre las que se incluye la baja sensibilidad y especificidad de la imagen tumoral.  objetivos  conocer las caracter\u00edsticas ecogr\u00e1ficas de los pacientes sometidos a biopsia transrectal por sospecha cl\u00ednico anal\u00edtica de c\u00e1ncer de pr\u00f3stata. Conocer la capacidad diagn\u00f3stica con nuestrom\u00e9todo actual.  conocer mediante las t\u00e9cnicas de an\u00e1lisis de imagen asistido por ordenador las caracter\u00edsticas ecogr\u00e1ficas del c\u00e1ncer de pr\u00f3stata localizado. Desarrolar un sistema de \u00abreconocimiento de formas\u00bb capaz de identificar las regiones de la pr\u00f3stata donde es m\u00e1s probable la presencia de c\u00e1ncer, para la ayuda en la realizaci\u00f3n de la biopsia.  metodolog\u00eda  procedemos a la grabaci\u00f3n digital de todas las biopsias de los pacientes sometidos a ella por sospecha cl\u00ednica (tacto rectal sospechosos) y\/o anal\u00edtica (psa total menor de 4ng\/ml) de c\u00e1ncer de pr\u00f3stata. Se realiza la grabaci\u00f3n de cada punci\u00f3n aislada durante diez segundos, para la posterior captura de dos im\u00e1genes est\u00e1ticas (tiff) de calidad en los tres segundos previos a la introducci\u00f3n de la aguja de punci\u00f3n. Dispusimos de un ec\u00f3grafo bruel&amp;kjaer modelo 3535, sonda transrectal de 7,5mhz modelo 8551. Se rechazaron para las t\u00e9cnicas de an\u00e1lisis de imagen las biopsias de pacientes con c\u00e1ncer de pr\u00f3stata avanzado. En el laboratorio inform\u00e1tico se individualizaron las im\u00e1genes correspondientes a los cilindros bi\u00f3psicos y se procedi\u00f3 a su estudio mediante el \u00abmapeo simple\u00bb en escala de gris a diferentes tama\u00f1os de ventana y mediante 11 descriptores de textura conocidos como \u00abmatrices de coaparici\u00f3n\u00bb a 4 distancias y 4 \u00e1ngulos, con diferentes tama\u00f1os de ventana. posteriormente se procedi\u00f3 a desarrollar un sistema de \u00abreconocimiento de formas\u00bb mediante dos m\u00e9todos de clasificaci\u00f3n<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>An\u00e1lisis computerizado de la imagen de ecograf\u00edatransrectal en el c\u00e1ncer de pr\u00f3stata localizado<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 An\u00e1lisis computerizado de la imagen de ecograf\u00edatransrectal en el c\u00e1ncer de pr\u00f3stata localizado <\/li>\n<li><strong>Autor:<\/strong>\u00a0 \u00e1lvaro G\u00f3mez-ferrer Lozano <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Universitat de val\u00e9ncia (estudi general)<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 28\/04\/2004<\/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>Fernando Jim\u00e9nez Cruz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: enrique Vidal ruiz <\/li>\n<li>Luis angel Rioja sanz (vocal)<\/li>\n<li>joaqu\u00edn Carballido rodr\u00edguez (vocal)<\/li>\n<li>  (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de \u00e1lvaro G\u00f3mez-ferrer Lozano El m\u00e9todo actual de elecci\u00f3n para el diagn\u00f3stico del c\u00e1ncer de pr\u00f3stata es la [&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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