Application of 70 kV with 30 mL contrast medium by dual-source CT with Stellar photon detector in coronary angiography / 实用放射学杂志

ABSTRACT

Objective To investigate the value of prospectively electrocardiogram (ECG)-triggered high-pitch coronary computed tomography angiography at 70 kV and 30 mL contrast medium with Stellar detector dual-source CT.Methods 60 patients with the BMI0.05).The CT attenuation of the 70 kV group were higher than that of the 100 kV group for all the segments(P 0.05).Compared with the 100 kV group,the radiation dose of the 70 kV group was reduced by 76.5% (A0.19±0.023 mSv,B0.81±0.101 mSv,P <0.01).Conclusion Using 70 kV with 30 mL contrast medium in Stellar detector dual-source CT coronary angiography for the patients with a normal BMI could obtain qualified diagnostic image with low radiation dose and contrast medium.