Three short axis slices (basal, medial, and apical) were acquired during the first pass of the contrast agent through the myocardium. The correspondence of the cardiac phase within each spatial location was achieved through electrocardiogram (ECG) gating. Adenosine-induced stress imaging was performed 15 min before rest imaging. Myocardial perfusion MR imaging was performed using bolus intravenous injection of of body weight gadopentetate dimeglumine (Magnevist; Schering, West Sussex, England). Images were acquired using a T1-weighted saturation recovery turbo field-echo imaging sequence. A shared (nonslice-selective) saturation pulse was used, giving prepulse delay times of 126 ms, 272 ms, and 418 ms for the basal, middle, and apical slices, respectively. The pulse sequence parameters were as follows: repetition time/echo time, ; flip angle, 15 deg; sensitivity encoding factor, 2; matrix, 144 3 144; field of view, 320 to 460 mm; slice thickness, 10 mm; and partial Fourier factor, 0.67.