Abstract：Objective: To investigate the accuracy of the patency of coronary stents by 64 multislice spiral CT(MSCT) and the relationship with the material of stent. Methods: Forty-two patients who had been implanted 89 stents(32 stainless steel stents, 57 NITI alloy stents) were studied by 64 MSCT. The patency of stents and the relationship with the material of stent were observed. The results were compared with coronary artery angiography(CAG). Results: In 32 stainless steel stents, 23 stents were showed normal and 9 stents displayed stenosis by CAG, but 18(18/23) stents showed normal and 4(4/9) stents revealed stenosis and 1 stent could not be evaluated by MSCT. In 57 NITI alloy stents, 47 stents showed normal and 10 stents displayed stenosis by CAG, 45(45/47) stents showed normal and 9(9/10) stents displayed stenosis by MSCT. In NITI alloy stents group, the sensitivity, specificity, the positive predictive value and the negative predictive value of diagnosing stenosis by MSCT is 90%, 95.7%, 81.8% and 97.8% respectively; but is 44%, 81.8%, 50%, 78% in stainless steel stents group. There was significant difference in evaluating different material stents patency by MSCT. Conclusion: 64 MSCT is a safe and reliable way to evaluate the patency of NITI alloy stents. But it has some limitations to stainless steel stents.
于淑靖;李忠信;马国军. 64 MSCT对冠状动脉支架通畅性评价的准确性与支架材料的关系[J]. , 2007, 18(10): 716-718.
YU Shu-jing;LI Zhong-xin;MA Guo-jun. Evaluating the patency of coronary stents by 64 multislice spiral CT and the relationship with the material of stent. , 2007, 18(10): 716-718.
2007, Vol. 18 
