IDENTIFICATION OF VIABLE MYOCARDIUM WITH TECHNETIUM-99M-MIBI INFUSION

A 50-yr-old man was evaluated using standard stress/rest Tc-99m-methox yisobutylisonitrile (MIBI) perfusion imaging, rest thallium infusion i maging and rest (TC)-T-99m-MIBI infusion imaging prior to revasculariz ation. Resting (TC)-T-99m-MIBI infusion imaging demonstrated hibernati ng myocardium which was not detected with standard stress/rest Tc-99m- MIBI imaging, The implication from this observation is that resting Tc -99m-MIBI infusion scintigraphy can provide useful information when ev aluating patients for the presence of hibernating myocardium, A prospe ctive comparison of resting Tc-99m-MIBI infusion scintigraphy with oth er noninvasive techniques used to identify viable myocardium may be wa rranted.