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SYSTEM FOR ANALYZING PERFUSION IN A DYNAMIC ENHANCED FOCUS LUNG COMPUTERIZED TOMOGRAPHY IMAGE AND A METHOD THEREOF CAPABLE OF AUTOMATICALLY CLASSIFYING VARIOUS TYPES OF SOLITARY PULMONARY NODULE CONNECTED WITH BLOOD VESSELS
SYSTEM FOR ANALYZING PERFUSION IN A DYNAMIC ENHANCED FOCUS LUNG COMPUTERIZED TOMOGRAPHY IMAGE AND A METHOD THEREOF CAPABLE OF AUTOMATICALLY CLASSIFYING VARIOUS TYPES OF SOLITARY PULMONARY NODULE CONNECTED WITH BLOOD VESSELS
PURPOSE: A system for analyzing perfusion in a dynamic enhanced focus lung computerized tomography image and a method thereof are provided to accurately and efficiently separate solitary pulmonary nodule by applying proper curvature and shape information based algorithm according to a type of solitary pulmonary nodule.;CONSTITUTION: A solitary pulmonary nodule candidate area is extracted from a type of solitary pulmonary nodule determined from a lung computerized tomography image(210). The solitary pulmonary nodule is divided by separating surrounding tissues from the solitary pulmonary nodule candidate area(212). An image before dynamic enhanced focus and an image after dynamic enhanced focus are initially matched with each other by using a central point of the solitary pulmonary nodule(214). The initial matching is corrected through rigid matching based on mutual information(216). The solitary pulmonary nodule divided from the image before dynamic enhanced focus is regionalized(218). Perfusion analysis is performed by using an average brightness value for each region(220).;COPYRIGHT KIPO 2013;[Reference numerals] (210) Extracting a solitary pulmonary nodule candidate area; (212) Dividing a solitary pulmonary nodule by separating surrounding tissues; (214) Initially matching enhanced images before and after dynamic enhanced focus with each other; (216) Correcting the initial matching; (218) Regionalizing the divided solitary pulmonary nodule; (220) Performing perfusion analysis using an average brightness value for each region; (AA,BB) Start;
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