Noninvasive Assessment of In-Stent Restenosis of the Coronary Artery with Using 16-Slice Computed Tomography

tion has been widely used for managing coronary artery occlusive disease. However, the risk of in-stent restenosis is about 10-40%, as determined on the angiographic follow-up at 6 months, and this remains a clinical issue in cardiology (1-3). Early identification of in-stent restenosis is important to reduce the number of recurrent ischemic episodes and to prevent myocardial infarction, thereby improving the long-term prognosis. Although routine follow-up angiography at 6 months is the most sensitive method to detect in-stent restenosis, non-invasive assessment of in-stent restenosis by multislice spiral computed tomography (MSCT) has the advantages of comfort, safety, time and cost when compared to conventional coronary angiography. For the initial reports of in-stent visualization with usJ Korean Radiol Soc 2007;56:443-450