Effect of maximal coronary vasodilation on transmural myocardial perfusion during tachycardia in the awake dog.
D000818:Animals; D002304:Cardiac Pacing, Artificial; D003326:Coronary Circulation / Q000187:drug effects; D003331:Coronary Vessels / Q000187:drug effects; D004285:Dogs; D006339:Heart Rate / Q000187:drug effects; D008863:Microspheres; D009200:Myocardial Contraction; D011865:Radioisotope Dilution Technique; D014664:Vasodilation