64层螺旋CT冠状动脉成像及冠状动脉彩色编码技术的临床应用

Clinical application of coronary angiography with 64 multi-slice CT and colour coding technique

目的探讨64层螺旋CT冠状动脉成像及冠状动脉彩色编码技术在冠心病诊断的临床应用。方法对74例临床拟诊冠心病的患者进行64层螺旋CT冠状动脉成像检查。重建冠状动脉图像，显示冠状动脉分支血管，测量冠状动脉狭窄程度、长度；对检出的86段粥样硬化斑块采用彩色编码技术进行标记和测算。结果64层螺旋CT冠状动脉成像受心率影响较大，在控制心率≤70次／min时，冠状动脉1-13段血管97．4％（823／845）图像质量为1级，粥样硬化斑块及冠状动脉狭窄清晰显示。彩色编码技术检出不稳定斑块27块，其中19个斑块导致冠状动脉26％～50％狭窄，5个斑块导致冠状动脉51％-75％狭窄。结论64层螺旋CT冠状动脉成像及冠状动脉彩色编码技术可以非创伤性地显示冠状动脉狭窄程度及导致冠状动脉狭窄的斑块中各成分形态、分布及比例，可作为对冠心病患者进行筛查及初步预后评估的首选方法。

Objective To investigate the clinical application of coronary angiography with 64 multi-slice CT and colour coding technique. Methods Seventy-four patients with suspected CAD underwent CT coronary angiography using 64 muhi-slice CT. Reconstructed the imaging of coronary angiography, and analyzed coronary plaque and stenosis. Eighty-six coronary plaques was signed and measured with color coding technique. Results Heart rates had the main affect in CT coronary angiography. When the heart rate ≤ 70 bpm, 97.4% （ 823/845 ） image quality of arterial segments were the first-grade. We could diagnose the coronary plaque and stenosis. Twenty-seven unstable atherosclerotie plaque were detec- ted with color coding technique, 26% - 50% and 51% -75% stenosis were caused by 19 and 5 plaque, respectively. Conclusion Coronary angiography with 64 multi-slice CT and eolour coding technique should become the preferred method for detecting and estimate coronary arteries disease.