高心率儿童冠状动脉成像追踪冻结技术的临床应用  

Clinical application of snapshot freeze technique during coronary angiography in children with high heart rate

作　　者：李昊岩 孙记航[1] 段晓岷[1] 刘勇[1] 刘道永[1] 胡迪[1] 曹永丽[1] 于彤[1] 彭芸[1] LI Haoyan;SUN Jihang;DUAN Xiaomin;LIU Yong;LIU Daoyong;HU Di;CAO Yongli;YU Tong;PENG Yun(Department of Imaging Center,National Center for Children's Health,BeijingChildren's Hospital,Capital Medical University,Beijing 100045,China)

机构地区：[1]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

出　　处：《中国医学影像技术》2019年第4期596-600,共5页Chinese Journal of Medical Imaging Technology

摘　　要：目的观察冠状动脉追踪冻结(SSF)技术在高心率儿童冠状动脉CTA(CCTA)中的价值。方法对50例心率≥75次/分患儿行CCTA,将原始数据重建为4组图像:A组为手动选择最佳期相,不采用SSF技术;B组为手动选择最佳期相,采用SSF技术;C组为采用Smart Phase技术自动选择最佳期相,不采用SSF技术;D组为Smart Phase技术自动选择最佳期相,采用SSF技术。比较4组冠状动脉图像的质量评分及可诊断率。结果 50例共评价675个冠状动脉节段,A、B、C、D组间左回旋支(LCX)图像质量评分和可诊断率总体差异无统计学意义(P均>0.05),右冠状动脉(RCA)、左前降支(LAD)及冠状动脉图像质量评分和可诊断率总体差异均有统计学意义(P均<0.05)。A组与B组间RCA和冠状动脉评分差异均有统计学意义(P均<0.01),LAD评分差异无统计学意义(P=0.08)。A组与B组间LAD和冠状动脉可诊断率差异均有统计学意义(P均<0.01);RCA可诊断率差异无统计学意义(P=0.08)。C组与D组间RCA、LAD及冠状动脉评分及可诊断率差异均有统计学意义(P均<0.05)。结论采用SSF可改善高心率患儿CCTA图像质量。Objective To explore the value of snapshot freeze (SSF) technique in coronary CTA (CCTA) in pediatric patients with high heart rates. Methods Totally 50 children whose heart rate were ≥ 75 times per minute were selected and underwent CCTA.The raw data were reconstructed into 4 groups.The best phase in group A was manually selected without SSF technique,in group B was manually selected with SSF,in group C was automatically selected (Smart Phase) without SSF,while in group D was automatically selected with SSF.The image quality scores and diagnostic rates of coronary artery were compared among 4 groups. Results Totally 675 branches were assessed in 50 patients.There was no significant difference of left circumflex artery (LCX) image quality scores nor diagnostic rates among 4 groups (both P >0.05).There were significant differences of right coronary artery (RCA),left anterior descending (LAD),total coronary artery scores and diagnostic rates (all P <0.05).Significant differences of RCA and coronary artery scores were found (both P <0.01),while no significant difference of LAD scores was detected ( P =0.08) between group A and B.There were significant differences of LAD and coronary artery diagnostic rates (both P <0.01),while no significant difference of RCA diagnostic rates was found ( P =0.08) between group A and B.Significant differences of RCA,LAD and coronary artery scores and diagnostic rates were observed between group C and D (all P <0.05). Conclusion SSF technique can improve image quality of CCTA in children with high heart rate.

关 键 词：冠状动脉疾病 儿童 血管造影术 体层摄影术 X线计算机 

分 类 号：R543.3[医药卫生—心血管疾病] R814.42[医药卫生—内科学]