Computation of transmitted and received B1 fields in magnetic resonance imaging.

Journal Article

Computation of B1 fields is a key issue for determination and correction of intensity nonuniformity in magnetic resonance images. This paper presents a new method for computing transmitted and received B1 fields. Our method combines a modified MRI acquisition protocol and an estimation technique based on the Levenberg-Marquardt algorithm and spatial filtering. It enables accurate estimation of transmitted and received B1 fields for both homogeneous and heterogeneous objects. The method is validated using numerical simulations and experimental data from phantom and human scans. The experimental results are in agreement with theoretical expectations.

Full Text

Duke Authors

Cited Authors

  • Milles, J; Zhu, YM; Chen, N-K; Panych, LP; Gimenez, G; Guttmann, CRG

Published Date

  • May 2006

Published In

Volume / Issue

  • 53 / 5

Start / End Page

  • 885 - 895

PubMed ID

  • 16686411

International Standard Serial Number (ISSN)

  • 0018-9294

Digital Object Identifier (DOI)

  • 10.1109/TBME.2005.863955

Language

  • eng

Conference Location

  • United States