Effects of static and radiofrequency magnetic field inhomogeneity in ultra-high field magnetic resonance imaging.

Published

Journal Article

To characterize the severe static (B(0)) and radiofrequency (B(1)) magnetic field inhomogeneity in ultra-high field (> or =7 T) magnetic resonance imaging, gradient echo (GE) and spin echo (SE) images of in vivo and postmortem human brains were acquired. The B(0) and B(1) inhomogeneity were experimentally mapped and/or numerically simulated, and correlated with the image artifacts. Whereas B(0) inhomogeneity affects predominantly GE images near air/tissue interfaces, B(1) inhomogeneity affects SE images more severely and shows non-intuitive patterns. Mapping of the B(0) and B(1) inhomogeneity is important in characterizing image artifacts. This will help develop better B(0) and B(1) inhomogeneity correction methods.

Full Text

Duke Authors

Cited Authors

  • Truong, T-K; Chakeres, DW; Beversdorf, DQ; Scharre, DW; Schmalbrock, P

Published Date

  • February 2006

Published In

Volume / Issue

  • 24 / 2

Start / End Page

  • 103 - 112

PubMed ID

  • 16455399

Pubmed Central ID

  • 16455399

International Standard Serial Number (ISSN)

  • 0730-725X

Digital Object Identifier (DOI)

  • 10.1016/j.mri.2005.09.013

Language

  • eng

Conference Location

  • Netherlands