A magnetization-driven gradient echo pulse sequence for the study of myocardial perfusion

Magn Reson Med. 1995 Aug;34(2):276-82. doi: 10.1002/mrm.1910340220.

Abstract

A T1-weighted imaging pulse sequence for contrast-based studies of myocardial perfusion is presented and evaluated in phantoms and in vivo. The sequence is similar to spoiled gradient-recalled echo sequences except that nonselective preparatory RF pulses drive magnetization to steady state prior to image acquisition. Steady state is thus obtained in both tissue and blood resulting in a stable, homogeneous, and dark pre-contrast baseline. Tip angles and timings are chosen so that pixel intensity approximates a linear relation to 1/T1. The dynamic range of signal response to contrast agent concentration is greater than that of an inversion-recovery fast low angle shot sequence. The sequence proposed should be useful for myocardial perfusion studies.

MeSH terms

  • Blood
  • Computer Simulation
  • Contrast Media
  • Coronary Circulation*
  • Fourier Analysis
  • Gadolinium
  • Heart / anatomy & histology
  • Heart Rate
  • Heterocyclic Compounds
  • Humans
  • Image Enhancement / methods*
  • Magnetic Resonance Imaging / methods*
  • Magnetics
  • Models, Structural
  • Models, Theoretical
  • Myocardial Infarction / diagnosis
  • Myocardial Infarction / physiopathology
  • Myocardium / pathology
  • Organometallic Compounds
  • Radio Waves
  • Signal Processing, Computer-Assisted

Substances

  • Contrast Media
  • Heterocyclic Compounds
  • Organometallic Compounds
  • gadoteridol
  • Gadolinium