FAIR excluding radiation damping (FAIRER)

Magn Reson Med. 1998 Nov;40(5):712-9. doi: 10.1002/mrm.1910400511.

Abstract

It is shown that the flow-sensitive alternating inversion recovery (FAIR) technique is complicated by the effect of radiation damping, leading to problems in calibrating this method on phantoms and to inaccuracies in measured flows. A modified scheme called FAIRER (FAIR excluding radiation damping) is proposed, which suppresses the damping effects by employing very weak magnetic field gradients (0.06 G/cm) during the inversion recovery, spin-echo, and predelay periods. Results on phantoms and in vivo on cat brain are presented that demonstrate that FAIRER effectively solves these problems.

Publication types

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

MeSH terms

  • Animals
  • Blood Flow Velocity
  • Brain / anatomy & histology
  • Brain / blood supply*
  • Brain / diagnostic imaging
  • Calibration
  • Cats
  • Cerebrovascular Circulation*
  • Echo-Planar Imaging / instrumentation*
  • Echo-Planar Imaging / methods*
  • In Vitro Techniques
  • Models, Cardiovascular
  • Phantoms, Imaging*
  • Radionuclide Imaging
  • Scattering, Radiation
  • Sensitivity and Specificity
  • Spin Labels*

Substances

  • Spin Labels