| 冠状动脉追踪冻结技术对高心率儿童冠状动脉成像质量的改善 |
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| 引用本文： | 李昊岩,,孙记航,彭芸,李海云.冠状动脉追踪冻结技术对高心率儿童冠状动脉成像质量的改善[J].中国医学物理学杂志,2021,0(10):1237-1242. |
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| 作者姓名： | 李昊岩 孙记航 彭芸 李海云 |
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| 作者单位： | 1.首都医科大学生物医学工程学院， 北京 100069； 2.国家儿童医学中心首都医科大学附属北京儿童医院影像中心， 北京 100045 |
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| 摘 要： | 目的:探索第二代冠状动脉追踪冻结（SSF2）技术是否可以提升高心率儿童冠状动脉的形态分辨能力。方法:对53例心率≥75次/min患儿行冠状动脉CT血管成像，年龄平均（17.5±18.7）个月，平均体质量（10.68±5.13） kg，扫描电压80、100 kV，采用智能心电门控技术自动选择曝光期相。将原始数据分别重建为3组图像:A组为常规图像；B组为采用SSF1技术的重建图像；C组为采用SSF2技术的重建图像。对3组冠状动脉图像的质量评分及可诊断率进行评估。结果:53例共评价534个冠状动脉节段。B组与C组右冠状动脉、左前降支、冠状动脉起源和冠状动脉评分及可诊断率差异均有统计学意义（P均<0.05），左回旋支（LCX）评分差异有统计学意义（P<0.05），LCX可诊断率无统计学意义（P=0.05）。A组与B组左前降支、LCX和冠状动脉起源评分差异均无统计学意义（P=0.07、0.14、0.43）。结论:采用SSF2技术可进一步改善高心率患儿冠状动脉CT血管成像质量。
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| 关 键 词： | 冠状动脉疾病 高心率儿童 冠状动脉追踪冻结技术 冠状动脉CT血管成像 |
Improving coronary artery image quality in children with high heart rate by coronary artery snapshot freeze technique |
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| LI Haoyan,,SUN Jihang,PENG Yun,LI Haiyun.Improving coronary artery image quality in children with high heart rate by coronary artery snapshot freeze technique[J].Chinese Journal of Medical Physics,2021,0(10):1237-1242. |
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| Authors: | LI Haoyan SUN Jihang PENG Yun LI Haiyun |
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| Affiliation: | 1. School of Biomedical Engineering, Capital Medical University, Beijing 100069, China 2. Imaging Center, Beijing Childrens Hospital, Capital Medical University, National Center for Childrens Health, Beijing 100045, China |
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| Abstract: | Abstract: Objective To explore whether the second generation of coronary artery snapshot freeze (SSF2) technique can improve the ability in recognizing coronary arteries in high heart rate children. Methods A total of 53 children whose heart rate were ≥75 times per minute, with an average age of (17.5±18.7) months and an average weight of (10.68±5.13) kg, were enrolled and underwent coronary CT angiography with a tube voltage of 80 or 100 kV, and the auto ECG gating technique was used to automatically select the exposure phase. The original data was reconstructed into 3 groups, namely group A (conventional images), group B (images reconstructed using SSF1 technique) and group C (images reconstructed using SSF2 technique). The image quality scores and diagnosable rates of coronary artery were compared among 3 groups. Results A total of 534 coronary artery branches in 53 patients were assessed. There were statistically significant differences in the image quality scores and diagnosable rates of right coronary artery, left anterior descending artery, coronary artery origin and coronary artery between groups B and C (all P<0.05). Although the differences in the image quality score of left circumflex artery (LCX) were statistically significant (P<0.05), the diagnosable rate of LCX was similar in groups B and C (P=0.05). No significant difference was found in the image quality scores of left anterior descending artery, LCX and coronary origin between groups A and B (P=0.07, 0.14, 0.43). Conclusion SSF2 technique can further improve the image quality of coronary CT angiography of children with high heart rate. |
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| Keywords: | Keywords: coronary artery disease children with high heart rate coronary artery snapshot freeze technique coronary CT angiography |
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