An active contour model for mapping the cortex

Author

Davatzikos, Chris A. ; Prince, Jerry L.

Volume

14

Issue

1

fYear

1995

fDate

3/1/1995 12:00:00 AM

Firstpage

65

Lastpage

80

Abstract

A new active contour model for finding and mapping the outer cortex in brain images is developed. A cross-section of the brain cortex is modeled as a ribbon, and a constant speed mapping of its spine is sought. A variational formulation, an associated force balance condition, and a numerical approach are proposed to achieve this goal. The primary difference between this formulation and that of snakes is in the specification of the external force acting on the active contour. A study of the uniqueness and fidelity of solutions is made through convexity and frequency domain analyses, and a criterion for selection of the regularization coefficient is developed. Examples demonstrating the performance of this method on simulated and real data are provided

Keywords

biomedical NMR; brain models; medical image processing; surface topography measurement; active contour model; brain MR images; brain cortex cross-section; brain outer cortex mapping; constant speed mapping; convexity; force balance condition; frequency domain analysis; medical diagnostic imaging; numerical approach; real data; regularization coefficient; ribbon; simulated data; snakes; solutions uniqueness; variational formulation; Active contours; Boundary conditions; Brain modeling; Data visualization; Frequency domain analysis; Image analysis; Image edge detection; Iterative algorithms; Joining processes; Noise robustness;

fLanguage

English

Journal_Title

Medical Imaging, IEEE Transactions on

Publisher

ieee

ISSN

0278-0062

Type

jour

DOI

10.1109/42.370403

Filename

370403