Quantitative study of signal decay due to magnetic susceptibility interfaces: MRI simulations and experiments

Author

De Guio, F. ; Benoit-Cattin, H. ; Davenel, A.

Author_Institution

Cemagref, Rennes

fYear

2007

fDate

22-26 Aug. 2007

Firstpage

1607

Lastpage

1610

Abstract

Characterization of magnetic susceptibility artifacts is required in a wide range of MRI studies. Experiments with a 0.2 T magnet and MRI simulations were used to assess the signal decay over echo time at different pixel sizes in the case of air-water interfaces. The specific experimental signal modulation which was reproduced in simulation was interpreted. Concordance between simulation and experiments should make possible further studies of magnetic susceptibility effects with more complex objects as in molecular imaging and in porous medium imaging.

Keywords

biomedical MRI; digital simulation; magnetic susceptibility; medical image processing; MRI signal decay; air-water interface; echo time; magnetic flux density 0.2 T; magnetic susceptibility interface; molecular imaging; porous medium imaging; signal modulation; Biological materials; Building materials; Focusing; Magnetic materials; Magnetic resonance imaging; Magnetic separation; Magnetic susceptibility; Molecular imaging; Pixel; Target tracking; Algorithms; Artifacts; Computer Simulation; Humans; Image Enhancement; Image Interpretation, Computer-Assisted; Magnetic Resonance Imaging; Magnetics; Models, Biological; Phantoms, Imaging; Reproducibility of Results; Sensitivity and Specificity;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Conference_Location

Lyon

ISSN

1557-170X

Print_ISBN

978-1-4244-0787-3

Type

conf

DOI

10.1109/IEMBS.2007.4352613

Filename

4352613