"Shim pulses" for NMR spectroscopy and imaging

Research output: Contribution to journalArticle

Abstract

A way to use adiabatic radiofrequency pulses and modulated magnetic-field gradient pulses, together constituting a "shim pulse," for NMR spectroscopy and imaging is demonstrated. These pulses capitalize on phase shifts derived from probe gradient coils to compensate for nonlinear intrinsic main magnetic field homogeneity for spectroscopy, as well as for deviations from linear gradients for imaging. This approach opens up the possibility of exploiting cheaper, less-than-perfect magnets and gradient coils for NMR applications.

Details

Authors
External organisations
  • External Organization - Unknown
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry

Keywords

  • numerical, pulse sequence, MRI, adiabatic, modulated gradient, optimization
Original languageEnglish
Pages (from-to)17576-17581
JournalProceedings of the National Academy of Sciences
Volume101
Issue number51
Publication statusPublished - 2004
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes