| 对比剂不同注射方案对冠状动脉CTA图像质量的影响 |
| 投稿时间：2016-09-14 修订日期：2016-09-27 点此下载全文 |
| 引用本文：陈伟彬,冯莉,张伟杰,宫凤玲,王星稳,张惠英.对比剂不同注射方案对冠状动脉CTA图像质量的影响[J].医学研究杂志,2017,46(5):171-174,3 |
| DOI：
10.11969/j.issn.1673-548X.2017.05.042 |
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| 基金项目:河北省科技计划项目（162777140）；河北省唐山市科学技术研究与发展计划（14130270B） |
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| 中文摘要:目的 分析冠状动脉CTA扫描时对比剂的不同注射方案对其图像影响，寻求最佳注射方案。方法 选取240例体重相近患者随机平均分成A、B、C 3组行冠状动脉CTA扫描。A组应用双期注射方案，首次注入70ml对比剂，随后追加20ml生理盐水；B组应用双期注射方案，首次注入50ml对比剂，随后追加20ml混合剂（盐水∶对比剂为1∶1），C组应用3期注射方案，首次注入50ml对比剂，第2期注入20ml混合剂（盐水∶对比剂为1∶1），随后追加生理盐水20ml。评价3组CTA图像升主动脉（AO）及冠状动脉三大分支CT值比较，差异有无统计学意义，比较3组间上腔静脉、右心室硬化伪影及室间隔显示情况。结果 与A组比较，B、C两组在减少10ml对比剂情况下，3组间AO及冠状动脉三大分支CT值比较，差异无统计学意义（P>0.05），B组上腔静脉、右心室硬化伪影高于A、C两组（P<0.05），C组室间隔显示率高于A、B两组（P<0.05）。结论 应用第3时相对比剂注射方案，既能有效减少造影剂用量，又能保证图像质量，较好地显示室间隔，对冠状动脉疾病的诊断具有一定意义。 |
| 中文关键词:冠状动脉 对比剂 注射方法 图像质量 |
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| Effect of different contrast medium injection solution on image quality of CT coronary artery imaging |
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| Abstract:Objective To analyse coronary CTA scan, contrast medium injection solution on its effect to the image, find the optimum injection solution. Methods Selected 240 cases of similar weight average patients and randomly divided into A, B, C in to three groups of coronary CTA scanning. Application of group A double injection scheme, for the first time into 70ml of contrast agent, then an additional 20ml saline. Group B used double injection scheme, for the first time into 50ml contrast agent, then an additional 20ml mixture (1:1 brine-contrast medium), And group C application of the third phase of injection scheme, for the first time into 50ml contrast agent, the second phase of the injected 20ml mixture (1:1 brine-contrast agent), then add 20ml saline. Performed evaluation of three groups of CTA images of the ascending aorta (AO)and coronary artery three branches which CT values have statistically calculated, Did comparison between those three groups of superior vena cava, right ventricular hardening, rate of incidence of artifacts and inter-ventricular septum. Results Compared with group A, B and C in the two groups in reducing 10ml of contrast agent, AO between three groups of three branches and coronary artery CT value is no statistical significance (P>0.05), group B superior vena cava, right ventricular hardening artifacts than A and C in the two groups (P<0.05), ventricular septal show rate is higher than group C A, B in two groups (P<0.05). Conclusion Application of three contrast agent injection scheme can effectively reduce the dosage of contrast agent and can ensure the quality of the image. Better showed ventricular septal and has certain important significance for the diagnosis of coronary artery disease. |
| keywords:Coronary artery Contrast agent Injection method Image quality |
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