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头颈CTA对比剂优化与成像质量相关性研究 被引量:7

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摘要 目的:探讨头颈部16层螺旋CT血管造影(CTA)对比剂剂量优化与成像质量的相关性。方法:将80例头颈部CTA随机分为A、B 2组,各40例,分别采用常规剂量(65~90ml)与优化剂量(46~50ml)行16层螺旋CT动脉血管成像,利用原始图像、最大密度投影(MIP)及多平面重组(MPR)技术进行图像后处理,从而对CTA图像质量进行评价。结果:A、B 2组全程血管内浓度曲线波动甚微、形态基本一致,主观判断无明显差异,优化方案组能有效消除头臂静脉高密度伪影干扰,显著提高颈部动脉起始段及颅内动脉的显示能力,2组间差异有统计学意义(P<0.05);颈动脉远侧段图像质量,2组间差异无统计学意义(P>0.05);B组颅内静脉显影淡、动脉显示质量高,与A组比较差异有统计学意义(P<0.05)。结论:头颈部16层螺旋CTA对比剂剂量优化方案,能够明显减少上腔静脉、颅内静脉伪影,提高图像质量,完全满足临床诊断需要。
出处 《中国中西医结合影像学杂志》 2012年第3期249-251,共3页 Chinese Imaging Journal of Integrated Traditional and Western Medicine
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参考文献9

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