摘要
目的比较心脏磁共振测量的短轴位左心室心腔面积变化分数与心肌周向应变的相似性。资料与方法回顾性选择解放军总医院第六医学中心PACS数据库中心脏磁共振图像质量良好的40例不同表现型心肌病,在3.0T MRI上完成电影成像检查,使用Medviso Segment软件在左心室短轴位测量各层面心内膜和心外膜面积,计算各层面面积变化分数和整体面积变化分数;使用Circle CVI42软件测量各层面周向应变和整体周向应变。采用线性回归分析整体周向应变与整体面积变化分数、层面周向应变与层面面积变化分数之间的相关性。结果整体周向应变与整体面积变化分数、层面周向应变与层面面积变化分数均呈正相关(r均>0.95),且呈良好的线性回归特征(回归系数在2.40~3.16之间,P<0.05),其大小与心腔半径有关。数值标准化处理后周向应变和面积变化分数曲线具有相同的标准差。结论短轴位左心室心腔面积变化分数与心肌周向应变在层面和整体水平均呈显著正相关,曲线形态相似,提示周向应变和面积变化分数具有类似的统计学价值。
Purpose To compare the similarity between the short-axis left ventricular cavity fractional area change measured by cardiac magnetic resonance and myocardial circumferential strain.Materials and Methods Forty cases of cardiomyopathy with different phenotypes and high-quality cardiac magnetic resonance images in PACS data center of the Sixth Medical Center of Chinese PLA General Hospital were retrospectively selected.All patients underwent cine imaging on a 3.0T MRI scanner.The endocardial and epicardial areas of each short-axis left ventricular slice were measured using Medviso Segment software to calculate slice-level fractional area change and global fractional area change.Slice circumferential strain and global circumferential strain were measured using Circle CVI42 software.Linear regression analysis was performed to assess correlations between global circumferential strain and global fractional area change,as well as slice circumferential strain and slice-level fractional area change.Results Both global circumferential strain and global fractional area change,as well as slice circumferential strain and slice-level fractional area change,exhibited positive correlations(all r>0.95).Linear regression demonstrated significant relationships(regression coefficients:2.40-3.16,P<0.05),with coefficient magnitudes related to left ventricular cavity radius.After normalization,circumferential strain and fractional area change curves showed identical standard deviations.Conclusion Short-axis left ventricular cavity fractional area change and myocardial circumferential strain display significant positive correlations at both slice and global levels,with similar curve morphology.These findings suggest that circumferential strain and fractional area change possess comparable statistical value in assessing cardiac function.
作者
李梦露
张恒
王春节
蒋福壮
杨开洲
邢园园
裴方民
程流泉
LI Menglu;ZHANG Heng;WANG Chunjie;JIANG Fuzhuang;YANG Kaizhou;XING Yuanyuan;PEI Fangmin;CHENG Liuquan(Department of Radiology,the Sixth Medical Center of Chinese PLA General Hospital,Beijing 100853,China;不详)
出处
《中国医学影像学杂志》
北大核心
2025年第7期739-744,共6页
Chinese Journal of Medical Imaging
关键词
心肌疾病
磁共振成像
心肌周向应变
左心室心腔面积变化分数
线性回归分析
Cardiomyopathies
Magnetic resonance imaging
Circumferential strain of the myocardium
Left ventricular chamber area change fraction
Linear regression analysis
