SSF在改善冠状动脉CT图像质量中的应用

何川东; 刘启榆; 陈娇; 周莹; 林华; 管彬; 廖丽萍

doi:10.13201/j.issn.1001-1439.2015.09.012

SSF在改善冠状动脉CT图像质量中的应用

- 绵阳市中心医院放射科(四川绵阳, 621000)

详细信息

通讯作者: 刘启榆,E-mail:lqy2225085@163.com

中图分类号: R541.4

收稿日期: 2014-12-08

修回日期: 2015-03-20

The applicaton of SSF in improving image qulity of coronary CT angiography

- Department of Radiology, Mianyang Central Hospital, Mianyang, 621000, China

More Information

Corresponding author: LIU Qiyu, E-mail: lqy2225085@163.com

Received Date: 08 December 2014

Revised Date: 20 March 2015

摘要

摘要: 目的:探讨冠脉运动追踪冻结平台(SSF)在改善64层螺旋CT冠状动脉图像质量中的应用价值。方法:回顾性分析行冠状动脉CT成像(CCTA)检查的121例患者的标准重建图像及基于SSF的运动校正图像,平均心率(HR)≤60次/min 39例,HR 60~70次/min 42例,HR＞70次/min 40例。分析平均HR、HR变异及HR波动对冠状动脉图像质量的影响;分析同一平均HR时,运动校正前后冠状动脉图像质量的差异。结果:平均HR是影响冠状动脉图像质量的主要因素。HR≤60次/min时,SSF在改善右冠状动脉的图像质量中有价值;HR 60~70次/min时,SSF在改善右冠状动脉及左冠状动脉小血管的图像质量中有价值;HR＞70次/min时,SSF能显著改善左右冠状动脉的图像质量。结论:SSF在改善冠状动脉的图像质量中有良好应用价值,特别是对高HR患者。
- 冠脉运动追踪冻结平台 /
- 冠状动脉CT成像 /
- 图像质量 /
- 运动校正
Abstract: Objective: To assess SSF for its effect on image quality of coronary artery in 64 multislice spiral CT.Method: Retrospectively analysed the image qulity of standard reconstruction and motion-corrected reconstruction that based on SSF platform of one hundred and twenty-one patients who underwent coronary CT angiography.Thirty-nine patients with mean heart rate (HR) ≤ 60bpm,forty-two patients with HR between 60~70 bpm and forty patients with HR＞70bpm.Assessed the impact of mean HR,HR variability and HR fluctuation on image qualtiy of CCTA.Compared the image quality before and after motion correction with the same mean HR.Result: The image quality of coronary artery was highly dependent on the mean heart rate.SSF could improve image quality of right coronary artery (RCA) when mean HR ≤ 60bpm.While mean HR was between 60~70bpm,SSF had value in improving image quality of RCA and small vessels of left coronary artery.SSF could significantly improve image quality of left and right coronary artery when mean HR＞70bpm.Conclusion: SSF has well application value in improving image qualtiy of coronary artery,especially for high HR patients.
- snapshot freeze /
- coronary CT angiography /
- image quality /
- motion-corrected

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