多层螺旋CT评价冠状动脉支架通畅的可行性

目的验证多层螺旋CT(MSCT)评价冠状动脉支架通畅的可行性。方法使用MSCT对17例患者的23个支架进行评价,并以常规冠状动脉造影作为金标准进行对照。结果使用MSCT平均只有45%的支架内腔能被显示,另有3个支架内腔不能用于狭窄评价。MSCT显示16个支架通畅,与常规冠状动脉造影相符合的有14个;MSCT显示4个支架闭塞,均得到常规冠状动脉造影证实。结论虽然16层螺旋CT只能显示部分支架内腔,但在评价支架通畅性方面CT能提供有用的信息。

Feasibility assessment of coronary stent patency using multislice computed tomography

Objective To confirm feasibility of assessment of coronary stent patency using multislice computed tomography (MSCT). Methods Twenty-three stents in 17 patients were evaluated by MSCT, and compared with conventional angiography as the standard of reference. Results Using MSCT, on average, 45% of the stent lumen diameter was visible. In 3 stents lumen visibility was not sufficient for stenosis evaluation. MSCT shows 16 stents without in-stent restenosis, 14 stents accord with conventional angiography. In 4 stents which MSCT shows occlusion, and conventional angiography proofs stent occlusion. Conclusion Although the stent lumen may be partly visualized, 16-slice spiral CT might provide valuable information for stent patency.