HONG HELEN KIM,홍헬렌,JO, HYUN HEE,조현희,GOO, JIN MO,구진모,PARK, CHANG MIN,박창민
申请号：
KR1020110120578
公开号：
KR1012518220000B1
申请日:
2011.11.18
申请国别(地区):
KR
年份:
2013
代理人:
摘要：
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) Start본 발명은 동적조영증강 폐 전산화단층촬영 영상에서 관류 분석 방법에 있어서, 상기 폐 전산화단층촬영 영상에서 결정된 폐결절의 유형으로부터 폐결절 후보 영역을 추출하고, 상기 추출된 폐결절 후보 영역에서 주변조직을 분리하여 폐결절을 분할하는 과정과, 상기 동적조영 전 증강영상과 동적조영 후 증강영상들 간 분할된 폐결절의 중심점을 이용하여 초기 정합하고 정규화된 상호정보기반 강체 정합을 통해 초기 정합을 보정하는 과정과, 상기 동적조영 전 증강영상에서 분할된 폐결절을 구역화하고 상기 각 구역에 대한 평균 밝기값을 이용하여 관류 분석을 수행하는 과정을 포함함을 특징으로 한다.
