EPFL
 Biomedical Imaging GroupSTI
EPFL
  Publications
English only   BIG > Publications > BSLIM


 CONTENTS
 Home Page
 News & Events
 People
 Publications
 Tutorials and Reviews
 Research
 Demos
 Download Algorithms

 DOWNLOAD
 PDF
 Postscript
 All BibTeX References

BSLIM: Spectral Localization by Imaging with Explicit B0 Field Inhomogeneity Compensation

I. Khalidov, D. Van De Ville, M. Jacob, F. Lazeyras, M. Unser

IEEE Transactions on Medical Imaging, vol. 26, no. 7, pp. 990-1000, July 2007.



Magnetic resonance spectroscopy imaging (MRSI) is an attractive tool for medical imaging. However, its practical use is often limited by the intrinsic low spatial resolution and long acquisition time. Spectral localization by imaging (SLIM) has been proposed as a non-Fourier reconstruction algorithm that incorporates spatial a priori information about spectroscopically uniform compartments. Unfortunately, the influence of the magnetic field inhomogeneity—in particular, the susceptibility effects at tissues' boundaries—undermines the validity of the compartmental model. Therefore, we propose BSLIM as an extension of SLIM with field inhomogeneity compensation. A B0-field inhomogeneity map, which can be acquired rapidly and at high resolution, is used by the new algorithm as additional a priori information. We show that the proposed method is distinct from the generalized SLIM (GSLIM) framework. Experimental results of a two-compartment phantom demonstrate the feasibility of the method and the importance of inhomogeneity compensation.


@ARTICLE(http://bigwww.epfl.ch/publications/khalidov0702.html,
AUTHOR="Khalidov, I. and Van De Ville, D. and Jacob, M. and Lazeyras, F.
        and Unser, M.",
TITLE="{BSLIM}: {S}pectral Localization by Imaging with Explicit $B_{0}$
        Field Inhomogeneity Compensation",
JOURNAL="{IEEE} Transactions on Medical Imaging",
YEAR="2007",
volume="26",
number="7",
pages="990--1000",
month="July",
note="")

© 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from IEEE.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.