Estimation of post-revascularization left ventricular ejection fraction an ischemic heart disease patients by using cavity to myocardial ratio of thallium reinjection image

ABSTRACT

Background: we reported the high correlation between cavity-to-myocardial [CM] count ratio at stress and rest thallium SPECT, and stress-rest ejection fraction [EF] calculated by MUGA test, this was confirmed by others. This correlation was explained partially by the functional mass. On the other hand, two important prognostic parameters should be considered before any revascularization technique [1] Identification of viable myocardium and its amount, [2] Prediction of EF improvement post revascularization