摘要
目的评估EasyScan自动定位技术与传统手动定位方法在扫描时间、定位准确性及心功能结果一致性,以验证该技术在提升检查效率与保持图像质量方面的潜力。方法前瞻性连续选取2024年10月至2025年3月于首都医科大学附属北京友谊医院通州院区行心脏磁共振检查的患者65例,其中6例患者未接受增强检查,余59例患者完成了全部序列的扫描。每例患者均接受传统手动定位及增强前后的EasyScan自动定位扫描。通过比较客观角度测量各平面定位线与解剖基准线之间的夹角、主观图像评分、心功能参数[包括左心室舒张末期容积(LVEDV)、左心室收缩末期容积(LVESV)、左心室射血分数(LVEF)、左心室每搏输出量(LVSV)、左心室质量(LVmass)及扫描时间],全面评估3种定位方法的效能;采用Spearman相关性分析两种定位方法的相关性;采用Bland-Altman分析和组内相关系数用于一致性评价。结果注射对比剂后EasyScan自动定位扫描时间显著短于传统手动定位[(70.68±22.35)s vs(288.24±77.03)s,P<0.001]。角度测量显示,注射对比剂后EasyScan自动定位与传统手动定位两腔心、四腔心及短轴位层面角度比较,差异无统计学意义(P>0.05),Bland-Altman分析显示,以上数据点位于95%CI内。短轴位电影图像显示,对注射对比剂后EasyScan自动定位与传统手动定位LVEF、LVEDV、LVESV、LVSV、LVmass比较,差异无统计学意义(P>0.05),且Spearman相关系数均高于0.78。结论EasyScan自动定位技术在注射对比剂前后均表现出与传统手动定位相当的准确性和一致性,同时显著缩短扫描时间,可提高心脏磁共振临床检查效率并减轻患者配合负担。
Objective To evaluate the scanning time,positioning accuracy,and consistency of cardiac function results between the EasyScan automatic positioning technology and the traditional manual positioning method,aiming to verify the potential of this technology in improving examination efficiency and maintaining image quality.Methods Sixtyfive consecutive patients who underwent cardiac magnetic resonance(CMR)examination at the Tongzhou Campus of Beijing Friendship Hospital Affiliated to Capital Medical University from October 2024 to March 2025 were prospectively enrolled.Among them,6 patients did not undergo contrast-enhanced examination,and the remaining 59 patients completed the scanning of all sequences.Each patient underwent traditional manual positioning and EasyScan automatic positioning scans both before and after contrast enhancement.The efficacy of the three positioning scenarios was comprehensively evaluated by comparing the following indicators:the angle between the positioning lines of each plane and the anatomical reference lines(objectively measured),subjective image scores,cardiac function parameters[including left ventricular end-diastolic volume(LVEDV),left ventricular end-systolic volume(LVESV),left ventricular ejection fraction(LVEF),left ventricular stroke volume(LVSV),left ventricular mass(LVmass)],and scanning time.Spearman correlation analysis was used to assess the correlation between the two positioning methods,while Bland-Altman analysis and the intraclass correlation coefficient were applied for consistency evaluation.Results After contrast agent injection,the scanning time for EasyScan automatic positioning was significantly shorter than that for traditional manual positioning[(70.68±22.35)s vs(288.24±77.03)s,P<0.001].Angle measurements showed no statistically significant differences in the angles of the two-chamber view,four-chamber view,and short-axis plane between EasyScan automatic positioning and traditional manual positioning after contrast agent injection(P>0.05).Bland-Altman analysis indicated that all these data points fell within the 95%confidence interval(95%CI).Analysis of short-axis cine images revealed no statistically significant differences in LVEF,LVEDV,LVESV,LVSV,and LVmass between EasyScan automatic positioning and traditional manual positioning after contrast agent injection(P>0.05),and the Spearman correlation coefficients were all higher than 0.78.Conclusion The EasyScan automatic positioning technology demonstrates accuracy and consistency comparable to traditional manual positioning both before and after contrast agent injection,while significantly shortening the scanning time.It can improve the efficiency of clinical CMR examinations and reduce the burden of patient cooperation.
作者
泽昆
王朝朝
孔慧慧
李向明
成雨萌
贺毅
ZHOU Zekun;WANG Zhaozhao;KONG Huihui;LI Xiangming;CHENG Yumeng;HE Yi(Department of Radiology,Beijing Friendship Hospital,Capital Medical University,Beijing 100050,China;Shanghai United Imaging Healthcare Co.,Ltd,Shanghai 201815,China)
出处
《转化医学杂志》
2026年第3期386-392,共7页
Translational Medicine Journal
关键词
磁共振成像
心脏
人工智能
深度学习
自动定位
magnetic resonance imaging
heart
artificial intelligence
deep learning
automatic positioning
