北华大学学报（自然科学版）2017，Vol.18Issue(1)：74-78,5.DOI:10.11713/j.issn.1009-4822.2017.01.017
320排CT低碘浓度联合低管电压在冠脉成像中的应用研究
Application Research on Low-Tube-Voltage Coronary Computed Tomography with Low Concentration Iodinated Contrast Media by 320-Slice CT
摘要
Abstract
Objective To investigate the feasibility of the scan protocol using low-tube-voltage and low concentration iodinated media in 320-slice CT coronary angiography. Method 40 patients with suspected or known coronary heart disease who underwent coronary CTA( CCTA) with a 320-MDCT scanner were divided into two groups randomly. Images were scored subjectively and objectively,and radiation dose and iodine intake were compared. Results The effective dose ( ED) and iodine intake exhibited significant differences between the two groups (P<0. 05),and the values in group B were less than those in group A. The ED in group B was reduced by 72. 95%,compared with that in group A. Accordingly,the amount of iodine in group B was reduced by 18. 29%. Statistically significant differences in image noise and CT values of LCR were found between group A and B (P<0. 05);in addition,image noise in group B were higher than that in group A. However,the SNR,CNR and image quality scores were comparable to both groups. Conclusion It’ s not only maintaining the image quality but also effectively reducing the amount of radiation dose and iodine intake to use “dual low” scanning protocol in coronary angiography with 320-row CT.关键词
320排螺旋CT/冠状动脉成像/双低剂量/辐射剂量/碘摄入量Key words
320-Slice CT/coronary angiography/dual-low dose/X-ray radiation dose/iodine intake分类
医药卫生引用本文复制引用
方玉荣,申云霞,娄明武,鲁琳,潘雪娜..320排CT低碘浓度联合低管电压在冠脉成像中的应用研究[J].北华大学学报（自然科学版）,2017,18(1):74-78,5.基金项目
深圳市科技创新委项目( JCYJ20140411150309468) （ JCYJ20140411150309468）
深圳市卫生计生系统科研项目(201401095) （201401095）
深圳市发改委项目(CXZZ20140505091419405 （）
2014992) （）
