Joint Brain Parametric -Map Segmentation and RF Inhomogeneity Calibration
Open Access
- 23 August 2009
- journal article
- research article
- Published by Hindawi Limited in International Journal of Biomedical Imaging
- Vol. 2009, 1-14
- https://doi.org/10.1155/2009/269525
Abstract
We propose a constrained version of Mumford and Shah's (1989) segmentation model with an information-theoretic point of view in order to devise a systematic procedure to segment brain magnetic resonance imaging (MRI) data for parametric -Map and -weighted images, in both 2-D and 3D settings. Incorporation of a tuning weight in particular adds a probabilistic flavor to our segmentation method, and makes the 3-tissue segmentation possible. Moreover, we proposed a novel method to jointly segment the -Map and calibrate RF Inhomogeneity (JSRIC). This method assumes theaveragevalue of white matter is the same across transverse slices in the central brain region, and JSRIC is able to rectify the flip angles to generate calibrated -Maps. In order to generate an accurate -Map, the determination of optimal flip-angles and the registration of flip-angle images are examined. Our JSRIC method is validated on two human subjects in the 2D -Map modality and our segmentation method is validated by two public databases, BrainWeb and IBSR, of -weighted modality in the 3D setting.Keywords
This publication has 47 references indexed in Scilit:
- Inherent insensitivity to RF inhomogeneity in FLASH imagingMagnetic Resonance in Medicine, 2004
- A generalized divergence measure for robust image registrationIEEE Transactions on Signal Processing, 2003
- General scheme of region competition based on scale spaceIeee Transactions On Pattern Analysis and Machine Intelligence, 2001
- Curve evolution implementation of the Mumford-Shah functional for image segmentation, denoising, interpolation, and magnificationIEEE Transactions on Image Processing, 2001
- Segmentation of brain MR images through a hidden Markov random field model and the expectation-maximization algorithmIEEE Transactions on Medical Imaging, 2001
- Segmentation and measurement of the cortex from 3-D MR images using coupled-surfaces propagationIEEE Transactions on Medical Imaging, 1999
- Region competition: unifying snakes, region growing, and Bayes/MDL for multiband image segmentationIeee Transactions On Pattern Analysis and Machine Intelligence, 1996
- Shape modeling with front propagation: a level set approachIeee Transactions On Pattern Analysis and Machine Intelligence, 1995
- A geometric model for active contours in image processingNumerische Mathematik, 1993
- Finite-element methods for active contour models and balloons for 2-D and 3-D imagesIeee Transactions On Pattern Analysis and Machine Intelligence, 1993