三点定位技术在心脏MRI四腔心成像中的应用价值  

The value of three-point localization method for four-chamber view acquisition in cardiac magnetic resonance imaging

作　　者：陈丽虹[1] 屈婷婷[1] 曹乐 李雅楠[1] 樊钢练[1] 刘冰 荐志洁[1] 郭建新[1] CHEN Lihong;QU Tingting;CAO Le;LI Yanan;FAN Ganglian;LIU Bing;JIAN Zhijie;GUO Jianxin(Department of Medical Imaging,the First Affiliated Hospital of Xi'an Jiaotong University,Xi’an 710061,China)

机构地区：[1]西安交通大学第一附属医院医学影像科,陕西西安710061

出　　处：《西安交通大学学报（医学版）》2024年第3期491-496,共6页Journal of Xi’an Jiaotong University（Medical Sciences）

基　　金：陕西省重点研发计划项目-一般项目(No.2023-YBSF-068);陕西省重点研发计划项目-高校联合项目(No.2020GXLH-Y-026)。

摘　　要：目的评估三点定位技术在提升心脏磁共振(CMR)四腔心图像质量及扫描效率中的应用价值。方法回顾性连续收集2022年1月—2023年10月行CMR四腔心扫描患者215例,对照组(109例)采用传统定位技术,实验组(106例)采用三点定位技术。由2名影像医师采用Likert 4分法评估2组患者四腔心图像的二尖瓣、三尖瓣及十字结构的显示质量。记录从定位像扫描结束到获取四腔心图像所需时间。构成比资料和计量资料分别采用卡方检验和双样本t检验进行分析,一致性分析则采用Kappa检验。结果2组患者性别、年龄、疾病构成和扫描技师工作年限无统计学差异。对照组和实验组患者二尖瓣、三尖瓣、十字结构的评分均值分别为3.44±0.64和3.63±0.49(P=0.023)、3.43±0.67和3.53±0.60(P=0.202)、3.71±0.49和3.83±0.35(P=0.047),实验组图像评分均优于对照组,其中二尖瓣和十字结构评分具有统计学差异。对照组、实验组患者获取四腔心图像所需时间分别为(11.67±3.49)min和(7.212±1.83)min,差异具有统计学意义(P<0.001)。结论相比于传统定位方法,三点定位技术所获四腔心图像可更好地显示二尖瓣、三尖瓣和十字结构,且缩短了成像时间。Objective To evaluate the application value of the three-point localization method in improving the quality and efficiency of four-chamber view acquisition in cardiac magnetic resonance(CMR)imaging.MethodsA total of 215 patients who underwent four-chamber view in CMR imaging from January 2022 to October 2023 were retrospectively enrolled and divided into two groups.The control group(n=109)received traditional localization method while the study group(n=106)received three-point localization method.The image quality of mitral valve,tricuspid valve and cruciform structure in four-chamber view images were assessed by two radiologists using a Likert 4-piont scale.The time-consumption from scout imaging to the finish of four-chamber view imaging was recorded.Constituent data and numeral data were compared by Chi-square test and two-sample t test,respectively.Kappa test was used to analyze the inter-observer consistency.Results There were no significant inter-group differences in gender,age,disease profile,or the radiographers'experience.The mean quality scores of the mitral valve,tricuspid valve and cruciform structure in the control group and the study group were 3.44±0.64 and 3.63±0.49(P=0.023),3.43±0.67 and 3.53±0.60(P=0.202),3.71±0.49 and 3.83±0.35(P=0.047),respectively.The image quality score was higher in the study group than in the control group,with the differences in mitral valve and cruciform structure reaching statistical significance.The time-consumption for obtaining four-chamber view for the control group and the study group was 11.67±3.49 minutes and 7.212±1.83 minutes,respectively,with statistically significant differences(P<0.001).Conclusion Compared with the traditional localization method,the three-point localization method provides better image quality in four-chamber view imaging with shortened imaging time.

关 键 词：心脏磁共振(CMR) 三点定位技术 四腔心 成像速度 图像质量 

分 类 号：R445.2[医药卫生—影像医学与核医学]