How to Improve the Interpretation of Dobutamine Stress Echocardiography?

Dobutamine stress echo is well validated non-invasive test for diagnosis of myocardial ischemia and viability by increasing the heart rate and myocardial oxygen demand so precipitate ischemia in presence of a flow limiting coronary artery stenosis, but interpretation of the test depends mainly on subjective analysis of wall motion abnormality which is not easy especially with rapid heart rate at peak dose