Análisis y selección de técnicas para la fusión de imágenes PET/CT basado en software

• Main Authors: Arturo Orellana García, Reinier Rodríguez González
• Format: Article
• Language: English
• Published: ECIMED 2020-06-01
• Series: Revista Cubana de Informática Médica
• Online Access: http://www.revinformatica.sld.cu/index.php/rcim/article/view/362

<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:RelyOnVML/> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--><p class="Default" style="margin-bottom: 12.0pt; text-align: justify; line-height: 150%;"><span style="font-family: 'Calibri','sans-serif'; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">Técnicas como la Tomografía por Emisión de Positrones y la Tomografía Computarizada permiten determinar la naturaleza maligna o benigna de un tumor y estudiar las estructuras anatómicas del cuerpo con imágenes de alta resolución, respectivamente. Investigadores a nivel internacional han utilizado diferentes técnicas para la fusión de la Tomografía por Emisión de Positrones y la Tomografía Computarizada porque permite observar las funciones metabólicas en correlación con las estructuras anatómicas. La presente investigación se propone realizar un análisis y selección de algoritmos que propicien la fusión de neuroimágenes, basado en la precisión de los mismos. De esta forma contribuir al desarrollo de software para la fusión sin necesidad de adquirir los costosos equipos de adquisición de imágenes de alto rendimiento, los cuales son costosos. Para el estudio se aplicaron los métodos Análisis documental, Histórico lógico e Inductivo deductivo. Se analizaron e identificaron las mejores variantes de algoritmos y técnicas para la fusión según la literatura reportada. </span></p><p class="Default" style="margin-bottom: 12.0pt; text-align: justify; line-height: 150%;"><span style="font-family: 'Calibri','sans-serif'; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">A partir del análisis de estas técnicas se identifica como mejor variante el esquema de fusión basado en Wavelet para la fusión de las imágenes. Para el corregistro se propone la interpolación Bicúbica. Como transformada discreta de Wavelet se evidencia el uso de la de Haar. Además, la investigación propició desarrollar el esquema de fusión basado en las técnicas anteriores. A partir del análisis realizado se constataron las aplicaciones y utilidad de las técnicas de fusión como sustitución a los altos costos de adquisición de escáneres multifunción PET/CT para Cuba. </span></p><p class="Default" style="margin-bottom: 12.0pt; text-align: justify; line-height: 150%;"><strong><span style="font-family: 'Calibri','sans-serif'; mso-fareast-font-family: Calibri; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">P<span style="letter-spacing: -.1pt;">a</span>l<span style="letter-spacing: -.05pt;">a</span>br<span style="letter-spacing: -.05pt;">a</span>sC<span style="letter-spacing: .05pt;">l</span><span style="letter-spacing: -.05pt;">a</span>v<span style="letter-spacing: -.1pt;">e</span>: </span></strong><span style="font-family: 'Calibri','sans-serif'; mso-fareast-font-family: Calibri; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">fusión de imágenes;<strong> </strong>esquema basado en Wavelet; transformada discreta de Haar; 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