PMID: 9434967Jan 22, 1998Paper

A multiresolution approach for contour extraction from brain images

Medical Physics
H Soltanian-Zadeh, J P Windham

Abstract

Many image registration methods use head surface, brain surface, or inner/outer surface of the skull to estimate rotation and translation parameters. The inner surface of the skull is also used for intracranial volume segmentation which is considered the first step in segmentation and analysis of brain images. The surface is usually characterized by a set of edge or contour points extracted from cross-sectional images. Automatic extraction of contour points is complicated by discontinuity of edges in the back of the eyes and ears and sometimes by a previous surgery or an inadequate field of view. We have developed an automated method for contour extraction that connects discontinuities using a multiresolution pyramid. Steps of the method are: (1) Contour points are found by an edge-tracking algorithm; (2) A multiresolution pyramid of contour points is constructed; (3) Contour points of reduced images are found; (4) From the continuous contour found at the lowest resolution, contour points at a higher resolution are found; (5) Step 4 is repeated until contour points at the highest resolution (original image) are found. The method runs fast and has been successful in extracting contours from MRI and CT images. We illustrate the m...Continue Reading

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Citations

Sep 19, 2000·Journal of Magnetic Resonance Imaging : JMRI·A GhaneiS Patel
Jan 5, 2002·Medical Physics·H Soltanian-Zadeh, D J Peck
Jun 14, 2013·Journal of the American Medical Informatics Association : JAMIA·Xiaofeng Yang, Baowei Fei
Oct 2, 2003·Radiology·Michael A JacobsZaver Bhujwalla
Mar 26, 2003·Journal of Magnetic Resonance Imaging : JMRI·Hamid Soltanian-ZadehMichael Chopp
Aug 28, 2009·Journal of Magnetic Resonance Imaging : JMRI·Defeng WangPheng Ann Heng
Jun 21, 2005·Human Brain Mapping·Belma DogdasRichard M Leahy
Jul 1, 2004·IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society·Amir Ghanei, Hamid Soltanian-Zadeh
Aug 12, 2005·IEEE Transactions on Medical Imaging·W YaoR E Ellis
Jun 27, 2006·Computers in Biology and Medicine·John ChivertonDeclan Johnson
Apr 3, 2001·Stroke; a Journal of Cerebral Circulation·M A JacobsS Patel

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