Interacting Active Rectangles for Estimation of Intervertebral Disk Orientation

Abufadel, A., Slabaugh, G.G., Unal, G.B., Zhang, L. & Odry, B. (2008). Interacting Active Rectangles for Estimation of Intervertebral Disk Orientation. Paper presented at the 8th International Conference on Pattern Recognition (ICPR), 2006., 20-08-2006 - 24-08-2008, Hong Kong.

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Abstract

This paper presents a fast and efficient method to determine intervertebral disk orientation in a magnetic resonance (MR) image of the spine. The algorithm originates from active contour theory and enforces a shape constraint to avoid leaks through weak or non-existent boundaries. The method represents a vertebra as a rectangle, modeled as a semi-affine transformation applied to the unit square. A regional flow integrated along the rectangle's perimeter updates the rectangle's transformation to achieve the segmentation. Further constraints are added so that adjacent rectangles have similar orientation and scale. The orientation of a disk is then inferred from its adjacent vertebrae. Experiments show that the method is fast and effective in detecting the correct intervertebral disk orientation, which is used for transverse image planning.

Item Type: Conference or Workshop Item (Paper)
Additional Information: © 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: School of Informatics > Department of Computing
URI: http://openaccess.city.ac.uk/id/eprint/5788

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