We studied the use of MR imaging with a limited-flip-angle, gradient-refocused pulse sequence to show central pulmonary emboli in I 1 patIents and to distinguish acute from chronic emboli. The central pulmonary vasculature was imaged by using a cine-limitedflip-angle (cine-MR) pulse sequence with 63/13 (TR/TE) and a 3O flip angle (8)
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