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2002

Tracking Leukocytes In Vivo with Shape and Size Constrained Active Contours

9 years 6 months ago
Tracking Leukocytes In Vivo with Shape and Size Constrained Active Contours
Inflammatory disease is initiated by leukocytes (white blood cells) rolling along the inner surface lining of small blood vessels called postcapillary venules. Studying the number and velocity of rolling leukocytes is essential to understanding and successfully treating inflammatory diseases. Potential inhibitors of leukocyte recruitment can be screened by leukocyte rolling assays and successful inhibitors validated by intravital microscopy. In this paper, we present an active contour or snake-based technique to automatically track the movement of the leukocytes. The novelty of the proposed method lies in the energy functional that constrains the shape and size of the active contour. This paper introduces a significant enhancement over existing gradient-based snakes in the form of a modified gradient vector flow. Using the gradient vector flow, we can track leukocytes rolling at high speeds that are not amenable to tracking with the existing edge-based techniques. We also propose a new...
Nilanjan Ray, Scott T. Acton, Klaus Ley
Added 23 Dec 2010
Updated 23 Dec 2010
Type Journal
Year 2002
Where TMI
Authors Nilanjan Ray, Scott T. Acton, Klaus Ley
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