Reconstrucción 3-D del Ventrículo Izquierdo de Corazón Humano a partir de Angiocardiografía Rotacional por Rayos X Usando Conectores Difusos
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Fecha
2019-07
Autores
Gerardo Chacón, José
Rodríguez, Johel
Vera, Miguel
Madriz, Delia
Bravo, Antonio
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Título del volumen
Editor
Latin American and Caribbean Consortium of Engineering Institutions, LACCEI
Resumen
En este trabajo, se propone un método de
reconstrucción tri-dimensional aproximada del ventrículo
izquierdo de corazón humano. El método realiza la reconstrucción
a partir de la información asociada a los niveles de gris y considera
la geometría de proyección perspectiva expresada por el modelo
pin-hole. El método está inspirado en la etapa de aproximación
utilizada por los enfoques difuso y probatorio. La reconstrucción
tridimensional se realiza combinando la retroproyección de cada
una de las proyecciones de la cavidad en la misma fase del ciclo
cardíaco. La información de nivel de gris de las imágenes de
entrada se combina mediante conectores difusos. Los conectores
difusos considerados corresponden a norma T, conorma T, función
de promediación y el operador de compensación generalizada del
conector difusa lógico. El método de reconstrucción genera errores
menores al 13.23%.
In this research, an approximate left ventricle human heart cavity three-dimensional reconstruction method is proposed. The approach performs the gray-level reconstruction and considers the oblique projection geometry expressed by the pin-hole model. The approach is inspired in the approximate stage used for the fuzzy and evidential approach. Three-dimensional reconstruction is performed by combining the back-projection of each of the views representing the same phase of the cardiac cycle. The gray-level information from the input images is combined by means fuzzy connectives. The fuzzy connectives considered correspond to T-norm, T-conorm, averaging function and the generalized compensation operator of the logic fuzzy connective. The reconstruction approach generates errors less than 13.23%.
In this research, an approximate left ventricle human heart cavity three-dimensional reconstruction method is proposed. The approach performs the gray-level reconstruction and considers the oblique projection geometry expressed by the pin-hole model. The approach is inspired in the approximate stage used for the fuzzy and evidential approach. Three-dimensional reconstruction is performed by combining the back-projection of each of the views representing the same phase of the cardiac cycle. The gray-level information from the input images is combined by means fuzzy connectives. The fuzzy connectives considered correspond to T-norm, T-conorm, averaging function and the generalized compensation operator of the logic fuzzy connective. The reconstruction approach generates errors less than 13.23%.
Descripción
Palabras clave
Reconstrucción tri-dimensional, Conectores difusos, Modelo pin-hole, Angiografía rotacional, Ventrículo izquierdo, Three-dimensional reconstruction, Fuzzy connectives, Pin-hole model, Rotational angiography, Left ventricle