Journal article

Enhanced image detail using continuity in the MIP Z-buffer: applications to magnetic resonance angiography.

DL Parker, BE Chapman, JA Roberts, AL Alexander, JS Tsuruda

Journal of magnetic resonance imaging : JMRI | Wiley | Published : 2000


In this paper a new algorithm is presented for the segmentation and display of blood vessels from images obtained with magnetic resonance angiography (MRA) and other three-dimensional (3D) angiographic imaging techniques. The algorithm developed is based on the observation that vessels are strongly evident in the maximum intensity projection (MIP) Z-buffer as regions of high continuity and low local roughness. Roughness is measured here by the minimum chi2 value of a low-order local least-squares fit in the principal directions through each point in the MIP Z-buffer. Although some background pixels in the Z-buffer exhibit low local roughness, the size of the connected region is nearly always..

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University of Melbourne Researchers