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目的探讨双源CT冠状动脉造影在评价冠状动脉药物支架通畅性的价值。方法对16例冠状动脉支架术后患者的21枚支架行双源CT(DSCT)冠状动脉造影检查,利用DSCT最大密度投影(MPR)和CPR图像后处理功能对各支冠状动脉进行重建,应用5分制评价冠状动脉支架的图像质量并评价支架内腔可见度,其中4例患者的6枚支架通畅性得到常规冠状动脉造影(DSA)对照。结果图像质量均达到优良。图像质量与心率、呼吸运动、支架位置及重建方式有关。所有21枚支架内腔均为可见。6枚支架通畅性得到DSA证实。结论双源CT冠状动脉造影是评价冠状动脉支架通畅性的一种安全可靠的检查方法。
Objective To evaluate the value of dual-source CT coronary angiography in assessing the patency of coronary stent. Methods Twenty-one scans of 16 patients undergoing coronary stenting were examined by dual-source CT (DSCT) coronary angiography. The coronary arteries were reconstructed using DSCT MPR and post-CPR imaging. The coronary artery stents were evaluated on the image quality and the intraluminal visibility of the stents. Six stents in four patients were routinely coronary angiography (DSA) controls. The result is excellent image quality. Image quality and heart rate, respiratory exercise, stent position and reconstruction methods. All 21 stent lumens were visible. Six stent patency was confirmed by DSA. Conclusion Dual-source CT coronary angiography is a safe and reliable method to evaluate coronary artery stenting.