不同扫描方法在CT冠状动脉成像中的应用研究

Research of different scanning methods in the application of CT coronary angiography

目的:探讨预注射法与对比剂跟踪法在64层螺旋CT冠状动脉成像的应用价值。方法:70例受检者随机分为A、B两组,分别采用预注射法和对比剂跟踪法行64层螺旋CT冠状动脉成像。利用直线相关分析探讨患者年龄与图像质量之间的相关性,并比较两种扫描方法所得图像质量间的差异。结果:两组患者年龄与图像质量之间均存在负相关,rA=-0.4692,rB=-0.6734,P值均<0.05;A组患者图像质量清晰率为94.3%,B组患者图像质量清晰率为85.7%,两者间差异无统计学意义。结论:64层螺旋CT冠状动脉成像对比剂预注射法和跟踪法均能较好显示冠状动脉病变情况,屏气较差的老年患者优先选择预注射法,而屏气良好的青年患者则优先选择对比剂跟踪法。

Objective：To investigate the application value of test bolus and smart prep Rx technique in multi-slice spiral CT coronary angiography.Methods：70 patients were randomly individed into two groups,for group A the test bolus technique was used,while for group B the smart prep Rx technique was used.The relativity between age and image quality was explored by straight line correlation analysis,and the difference of image quality between the two scanning techniques was compared.Results：There was negative correlation between age and image quality,rA=-0.4692,rB=-0.6734,P0.05;The image quality definition was 94.3% in Group A,and 85.7% in Group B.Conclusion：Test bolus and smart prep Rx used in multi-slice spiral CT coronary angiography both can show coronary artery lesions well,but the former is preferable to the elder patients and the latter to the younger patients.