Analysis of an object data set on a multi-dimensional space

Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression

Reexamination Certificate

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C703S006000, C382S254000

Reexamination Certificate

active

06975973

ABSTRACT:
The method relates to analysis of a tubular structure1such as a rendition of the vascular system of a patient. Gradients g1jto the surface of the tubular structure1are computed in a starting point (BP). Subsequently, a normal {circumflex over (n)} which extends essentially perpendicularly to the gradients is derived and a cross-section is taken along a cutting plane having {circumflex over (n)} as its normal. A subsequent position (VP) is taken by performing a small shift in the direction of {circumflex over (n)}. The axis of the vessel is tracked by repeating the procedure.

REFERENCES:
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Tolias et al, “A Fuzzy Vessel Tracking Algorithm for Retinal Images Basedon Fuzzy Clustering”, IEEE, Apr. 1998.
Chun Kee Jeon et al, “A new Approach to the Estimation of Diameters in Coronary Arteriograms”, Real Time Imaging, Dec. 1998, Academic Press, UK.
Davies E.R., “A Hybrid Sequential-Parallel Approach to Accurate Circle Centre Location”, Pattern Recogniton Letters, pps. 279-290, ISSN: 0167-8655.
Hastreiter et al, “Fast Analysis of Intracranial Aneurysms based on Interactive Direct Volume rendering and CTA”, MICCAI, 1998, pp. 660-669.
Van Der Weide et al, “Calculating Optimal Angiographic angles of Cerebral Aneurysms”, CAR 97 , pp. 289-294, ISBN: 0-444-82756-0.

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