Correlation of radionuclide estimates of myocardial infarction size and release of creatine kinase-MB in man.

Creatine kinase-MB isoenzyme release (CK-MB-g-Eq) was correlated with left ventricular (LV) radionuclide gated blood pool wall motion estimates of percent abnormally contracting regions (%ACR), ejection fraction (EF) and quantitative thallium-201 (Tl-201) LV perfusion scintigraphy (Tl-201 perfusion index) during evolving myocardial infarction (MI). Of the 35 patients, 14 had no evidence of either prior MI or right ventricular (RV) MI, and the CK-MB-g-Eq showed reasonable correlation with %ACR (r =0.72;