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Proceedings Paper

Phase congruency map driven brain tumour segmentation
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Paper Abstract

Computer Aided Diagnostic (CAD) systems are already of proven value in healthcare, especially for surgical planning, nevertheless much remains to be done. Gliomas are the most common brain tumours (70%) in adults, with a survival time of just 2-3 months if detected at WHO grades III or higher. Such tumours are extremely variable, necessitating multi-modal Magnetic Resonance Images (MRI). The use of Gadolinium-based contrast agents is only relevant at later stages of the disease where it highlights the enhancing rim of the tumour. Currently, there is no single accepted method that can be used as a reference. There are three main challenges with such images: to decide whether there is tumour present and is so localize it; to construct a mask that separates healthy and diseased tissue; and to differentiate between the tumour core and the surrounding oedema. This paper presents two contributions. First, we develop tumour seed selection based on multiscale multi-modal texture feature vectors. Second, we develop a method based on a local phase congruency based feature map to drive level-set segmentation. The segmentations achieved with our method are more accurate than previously presented methods, particularly for challenging low grade tumours.

Paper Details

Date Published: 20 March 2015
PDF: 11 pages
Proc. SPIE 9413, Medical Imaging 2015: Image Processing, 94133O (20 March 2015); doi: 10.1117/12.2082630
Show Author Affiliations
Tünde Szilágyi, The Univ. of Debrecen (Hungary)
Michael Brady, Univ. of Oxford (United Kingdom)
Ervin Berényi, The Univ. of Debrecen (Hungary)

Published in SPIE Proceedings Vol. 9413:
Medical Imaging 2015: Image Processing
Sébastien Ourselin; Martin A. Styner, Editor(s)

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