Noninvasive stress testing of myocardial ischemia: comparison of GRE-MRI perfusion and wall motion analysis to 99 mTc-MIBI-SPECT, relation to coronary angiography

Eur Radiol. 1997;7(7):990-5. doi: 10.1007/s003300050238.

Abstract

In the evaluation of ischemic heart disease only MR imaging seems to have the potential to assess myocardial perfusion, function, and coronary morphology on a single instrument. The aim of this study was to assess the feasibility of a stress test with dipyridamole (0. 56 mg/kg) to analyze myocardial perfusion by Gd first-pass enhancement in ultrafast gradient-recalled-echo MRI (perf-MRI), and wall motion by cine gradient-recalled-echo MRI (Cine-MRI) in one imaging session. Twelve patients underwent complete rest and stress studies; satisfactory MR images were acquired in 10 patients. By 99 mTc-MIBI-SPECT sensitivities to detect ischemic segments were 66.7 % with Perf-MRI, 80.0 % with WM-MRI and 86.7 % for Perf-WM-MRI (Perf-MRI vs Perf-WM-MRI; p = 0.03). Scar was equally detected with a sensitivity of 91.6 % with either MRI technique. Thus, Perf-Cine-MRI provides complementary information for the management of ischemic heart disease and has a higher sensitivity than Perf-MRI alone.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Contrast Media
  • Coronary Angiography*
  • Coronary Circulation / drug effects
  • Dipyridamole*
  • Electrocardiography
  • Feasibility Studies
  • Gadolinium
  • Heterocyclic Compounds
  • Humans
  • Magnetic Resonance Imaging, Cine*
  • Male
  • Middle Aged
  • Myocardial Contraction
  • Myocardial Ischemia / diagnosis*
  • Myocardial Ischemia / diagnostic imaging
  • Organometallic Compounds
  • Sensitivity and Specificity
  • Technetium Tc 99m Sestamibi*
  • Tomography, Emission-Computed, Single-Photon*
  • Vasodilator Agents

Substances

  • Contrast Media
  • Heterocyclic Compounds
  • Organometallic Compounds
  • Vasodilator Agents
  • Dipyridamole
  • Technetium Tc 99m Sestamibi
  • gadolinium 1,4,7,10-tetraazacyclododecane-N,N',N'',N'''-tetraacetate
  • Gadolinium