[Intravenous DSA of the heart: functional studies of the left ventricle in coronary heart disease at rest and following stress].

Intravenous digital subtraction angiography (i.v. DSA) of the heart is performed for demonstration of the morphologic and functional peculiarities of the left heart chamber, especially the ejection fraction and regional wall motion abnormalities. Employment of both geometric and video densitometric computation techniques resulted in a good correlation with direct ventriculography (r = 0.945), video densitometry, however, with a tendency to values up to 10% higher. Comparative DSA studies during rest and following exercise in 25 patients with coronary heart disease were suitable to discover pathologic strain reactions of the myocardium in 4 cases, typically depending on angiographic findings of the coronary arteries. In this way a simple method for better estimation of a deficit in coronary blood supply and its functional impact on myocardial performance may become useful.