对比剂注射部位对儿童复杂先天性心脏病双源CT成像的影响

发布时间：2018-01-22 19:31

本文关键词： 体层摄影术 X线计算机对比剂注射部位心脏缺损先天性儿童　出处：《中国介入影像与治疗学》2015年05期 　论文类型：期刊论文

【摘要】：目的探讨对比剂注射部位对儿童复杂先天性心脏病CTA图像质量的影响。方法回顾性分析426例复杂先天性心脏病患儿的双源CT心脏大血管CTA图像,其中经上肢静脉注射154例(A组),以下肢静脉注射272例(B组),对A、B组CTA图像上腔静脉对比剂硬化束伪影,心腔、大血管CT值,右心房、右心室对比剂均匀度,心内结构及大血管显示清晰度进行对比。结果 A组图像上腔静脉内对比剂硬化束伪影评分为3.00±1.04,B组为3.96±1.08,优于A组,二者差异有统计学意义(P0.01),两组心腔、大血管平均CT值的差异均无统计学意义(P均0.05);两组心内结构、大血管、冠状动脉起源及近段图像清晰度主观评分差异均有统计学意义,B组均高于A组(P均0.05),而右心房、右心室对比剂均匀度评分的差异无统计学意义(P均0.05)。结论对比剂注射部位的选择对儿童先天性心脏病CTA图像质量有显著影响,经下肢浅静脉注射对比剂有助于消除上腔静脉对比剂伪影,提高图像质量。
[Abstract]:Objective to investigate the effect of injection of contrast medium on the quality of CTA images of children with complex congenital heart disease. Methods double source CT CTA images of large cardiac vessels in 426 children with complex congenital heart disease were analyzed retrospectively. Among them, 154 cases were injected by upper limb vein and 272 cases by lower extremity vein injection. The contrast medium sclerosing artifacts of superior vena cava, cardiac cavity and large blood vessel in group A were compared with those in group A (group B). Results the contrast medium uniformity, the structure of heart and the clarity of large vessels were compared in right atrium and right ventricle. Results in group A, the contrast agent sclerosing in superior vena cava was 3.00 卤1.04. Group B (3.96 卤1.08) was better than group A (P 0.01). There was no significant difference in the mean CT value of cardiac cavity and large vessel between the two groups (P < 0.05). There were significant differences in subjective scores of intracardiac structure, large vessels, origin of coronary artery and proximal image clarity between two groups. Group B was higher than group A (P 0.05), while right atrium. There was no significant difference in the right ventricular contrast agent uniformity score (P < 0.05). Conclusion the choice of contrast agent injection site has a significant effect on the CTA image quality of children with congenital heart disease. Injection of contrast agent through superficial vein of lower extremity helps to eliminate artifact of superior vena cava contrast agent and improve image quality.
【作者单位】：河南省胸科医院影像科;
【分类号】：R725.4;R816.92
【正文快照】： 图1 A组,患儿女,10岁,主动脉缩窄,心脏大血管CTA图像,经左上肢肘静脉注射对比剂轴位(A~C)、冠状位(D)图像显示右上腔静脉(RSVC)、左上腔静脉(LSVC)及其侧支静脉(箭头)硬化束伪影,使对右、左肺动脉,主动脉,左、右心房的观察和测量困难复杂先天性心脏病畸形繁多,血流动力学各异,

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