冠状动脉追踪冻结技术在回顾性心电门控下改善冠脉CTA图像质量的应用价值

发布时间：2018-03-21 12:11

本文选题：冠状动脉　切入点：CT血管成像　出处：《放射学实践》2017年04期 　论文类型：期刊论文

【摘要】：目的:评估冠状动脉追踪冻结技术(SSF)在回顾性心电门控下改善冠脉CTA图像质量的效果。方法:117例患者采用回顾性心电门控和单扇区重建技术行冠脉CTA扫描,以心率75次/分为界分为高心率组(38例)和低心率组(79例),分别采用标准算法(STD)和SSF技术进行图像重建,所获图像由本科诊断医师进行分析,以LiKert 5分制评分标准对冠脉整体质量进行评分,要求3分以下者需重新进行检查。结果:117例患者的STD图像的平均得分(4.18)显著低于SSF重建图像(4.42),差异有统计学意义(P0.05)。高心率组中STD图像的平均得分(3.43)显著低于SSF重建图像(4.02),差异有统计学意义(P0.05);而低心率组STD图像的平均得分(4.56)与SSF重建图像(4.62)之间的差异无统计学意义(P0.05)。结论:冠状动脉追踪冻结技术(SSF)能有效提高冠脉CTA的图像质量,尤其是对心率较快的患者,可提高对高心率患者冠脉成像的可判读性。
[Abstract]:Objective: to evaluate the effect of coronary artery tracking freezing technique (SSF) in improving the quality of coronary CTA images under retrospective electrocardiogram (ECG) gating. Methods: the coronary CTA scanning was performed in 117 patients with coronary artery disease by retrospective ECG gating and single sector reconstruction. The 75 beats / min of heart rate were divided into high heart rate group (38 cases) and low heart rate group (79 cases). The images were reconstructed by standard algorithm (STD) and SSF technique respectively. The images were analyzed by the undergraduate diagnostics. The whole quality of coronary artery was evaluated by LiKert 5 score system. Results the average score of STD images in 117 patients with 1: 117 was significantly lower than that of SSF reconstruction images (4.42%), the difference was statistically significant (P 0.05). The average score of STD images in high heart rate group was 3.43) significantly lower than that in SSF weight. There was no significant difference between the mean score of STD image in low heart rate group (4.56) and SSF reconstruction image (4.62%). Conclusion: coronary artery tracking freezing technique can effectively improve the image quality of coronary artery CTA. Especially for patients with faster heart rate, it can improve the readability of coronary angiography in patients with high heart rate.
【作者单位】：解放军第117医院机场路院区医学影像科;
【分类号】：R816.2

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