This paper presents vascular tree reconstruction and artery-vein separation methods from 3D thoracic CT-angiography (CTA) images. In the methods, the lungs, blood vessels and the heart are segmented by using intensity-based thresholds and morphological operations. After the distance transform for the regions of blood vessels and the heart, we compute seed points that are the maxima of distance ...

background: in the case of sensitive questions such as number of alcoholics known, majority of respondents might give an answer of zero. poisson regression model (p) is the standard tool to analyze count data. however, p provides poor fit in the case of zero inflated counts, when over-dispersion exists. therefore, the questions to be addressed are to compare performance of alternative count reg...