【作者】 彭波； 张玉东； 郑黎； 侯键；

【Author】 PENG Bo;ZHANG Yu-dong;ZHENG Li;HOU Jian;Department of Radiology,The Chengdu university of Traditional Chinese Medicine Hospital;

【机构】 成都中医药大学附属医院放射科；

【摘要】 目的:评估宝石能谱CT冠状动脉自动追踪冻结(SSF)和智能边缘修复(IBR)技术联合应用在冠状动脉成像中的应用价值。方法:回顾性分析71例临床怀疑冠心病而行CT冠状动脉成像患者的影像资料,所有患者均行标准算法及SSF和IBR联用2种方法进行重建。由2名有经验的医师比较标准算法(A组)和联用重建(B组)2种方法的图像质量,对每支冠状动脉及其各段血管水平进行图像质量评分。评分方法:采用美国心脏协会(AHA)对冠脉分段制定的标准,将冠脉分为15段,若存在中间支,标记为16段。评分标准:4分为图像质量优,冠脉显示清晰,管腔连续完整,边缘锐利,无任何运动伪影;3分为冠脉管腔连续完整,局部边缘略模糊,无明显运动伪影及错层;2分为冠脉管壁欠锐利或MPR上可见轻度运动伪影,但不影响诊断;1分为图像质量差,重组图像上冠脉错位、管壁严重伪影,不能诊断。统计检验方法:采用SPSS13.0软件对两组图像质量的主观评分进行两者间Mann-Whitney检验,以P<0.05为差异有统计学意义。结果:A、B两组可用于评价的冠状动脉条数为852条;A组主观图像质量评分为(3.68±0.023);B组为(3.78±0.017),两组间比较差异有统计学意义(P=0.012);B组评分为优的冠状动脉(712/852)高于A组评分为优的冠状动脉(678/852),两者间比较有差异有统计学意义(P=0.000)。结论;SSF和IBR联合应用能够明显提高CT冠状动脉成像图像质量。更多还原

【Abstract】 Objective:To assess the effect of Gemstone Spectral CT’s snapshot freeze motion correction algorithm combining with intelligent boundary registration on image quality of coronary CT angiography.Methods:Retrospective analysis 71 consecutive patients underwent coronary CTAt all datasets were reconstructed the means of both Standard(A)and SSF combining with IBR(B).Image quality of A and B reconstructions were compared by two experienced radiologists,also Wilcoxon rank sum test were used for statisticall analysis.Results:There has significant statistic difference for the both scoring of subjective image assessment,the quantity of high mark with B was higher than A.Condnsion:The use of SSF motion correction algorithm combining with IBR improves image quality of coronary CTA.更多还原