Use of ivabradine, or 3-{3-[{[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl}(methyl) amino]propyl}-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-3-benzazepin-2-one, of its addition salts with a pharmaceutically acceptable acid and of their hydrates, as a diagnostic agent in the method of coronary angiography by multislice computed tomography.本發明係關於一種以多層電腦斷層攝影進行之冠狀動脈攝影方法中依伐布雷定(ivabradine)、或3-{3-[{[(7S)-3,4-二甲氧基雙環[4.2.0]辛-1,3,5-三烯-7-基]甲基}(甲基)胺基]丙基}-7,8-二甲氧基-1,3,4,5-四氫-2H-3-苯甲氮呯-2-酮、其與醫藥上可接受酸之加成鹽及其等水合物作為診斷劑之用途。
