Reduction of blurring in view angle tilting MRI

Magn Reson Med. 2005 Feb;53(2):418-24. doi: 10.1002/mrm.20375.

Abstract

Magnetic resonance imaging (MRI) in the presence of metallic objects suffers from slice-selection errors and in-plane distortions. View angle tilting (VAT) corrects for in-plane distortions by adding a gradient on the slice-select axis during readout, but can suffer from image blurring. This work demonstrates that the major source of blurring is a slice profile modulation of the data, and proposes several solutions to prevent such blurring. Multiple high-bandwidth readouts are demonstrated to reduce the blurring while improving the signal-to-noise ratio (SNR) over a single high-bandwidth readout.

Publication types

  • Evaluation Study
  • Research Support, U.S. Gov't, P.H.S.
  • Validation Study

MeSH terms

  • Artifacts*
  • Humans
  • Image Enhancement / methods*
  • Image Interpretation, Computer-Assisted / methods*
  • Magnetic Resonance Imaging / methods*
  • Metals*
  • Phantoms, Imaging
  • Prostheses and Implants*
  • Reproducibility of Results
  • Sensitivity and Specificity

Substances

  • Metals