Left descending artery was scanned in 21 patien ts and right coronary artery in 6 patients.45 segments of coronary artery were o bserved.

• 结果：急性心肌梗塞溶栓治疗后，虽然血管再通，但冠脉内超声仍显示存在严重狭窄，提示需要进一步介入治疗。