Avaliação de métodos de limiarização para segmentação de imagens do fígado em oncologia.

Abstract

Computer tomography (CT) is a diagnostic X-ray imaging technique that gives important informations about organs in the whole body. It is very useful to accurately delineate the extent of disease in the thorax and abdome. It also allows to outline local tumors as small as 1 cm. The analysis of these images is an important task for the oncologist, because he will make decisions using CT scans information for diagnosis and treatment planning. The first step in image analysis is segmentation. In this work, the performance of some thresholding techniques that could be used to outline tumors in CT scans were tested. Initially, tomograms of the liver were used to test the thresholding techniques, but later it could be extended for CT scans from other parts of the body.