256层螺旋CT冠状动脉成像与选择性冠状动脉造影诊断冠状动脉支架内再狭窄的对比研究

目的探讨256层螺旋CT与选择性冠状动脉造影诊断冠状动脉支架内再狭窄的异同。方法入选112名患者采用256层螺旋CT重建237枚支架,评估再狭窄情况。结果 237枚支架中发现33例再狭窄;256层CT诊断支架内再狭窄的敏感性为93.94%,特异性为91.18%,阳性预测值为63.27%,阴性预测值为98.94%,其中植入左主干和前降支近中段内支架的图像质量显著优于植入回旋支和右冠状动脉内支架。结论 256层螺旋CT冠状动脉成像诊断支架内再狭窄具有一定的准确性,尤其可作为植入于左主干、前降支近中段内的单支架植入术后的随访检查方法。

the Comparative Study of 256 Slice Spiral CT Coronary Artery Imaging and Selective Coronary Angiography for Diagnosis of Coronary Artery in-Stent Restenosis

Objective To investigate the256slice spiral CT and selective coronary angiography for diagnosis of coronary artery in-stem restenosis of similarities and differences. Methods A total of 112 patients using 256 slice spiral CT reconstruction in 237 stents, assess restenosis. Results 237 stents were found in 33 patients with restenosis;256 layer CT diagnosis of in-stent restenosis with a sensitivity of 93.94%, a specificity of 91.18%, positive predictive value was 63.27%, the negative predictive value was 98.94%, which was implanted in the left main trunk and the anterior descending branch of the proximal and middle stent implantation significantly better image quality in the circumflex and fight coronary artery stent. Conclusion 256 slice spiral CT coronary artery imaging in the diagnosis of in-stent restenosis with some accuracy, especially can be used as implanted in the left main trunk, anterior descending artery proximal and middle within a single stent implantation follow-up examination method.