Myocardial Magnetic Resonance Texture Characteristics of Healthy Volunteers

WU Tao, SUN Huai-qiang, LIU Xiu-min, CHEN Yu-cheng, DONG Yang, HE Shuai, WAN Ke, CHENG Wei, GAO Fa-bao, SUN Jia

Abstract

To determine the myocardial texture features of cardiac magnetic resonance (CMR) in healthy adult Han populations.  Methods  59 healthy Han volunteers were recruited for this study from May 2016 to November 2017. CMR examinations were performed on the participants with a 3.0T scanner (Tim Trio, Siemens Medical Solution) to estimate the functional parameters, Native T1 value and ECV. Texture analysis (TA) was performed on the region of interest (ROI) in the left ventricle myocardium on T1 mapping images, with 40 myocardial texture features being extracted. Differences in the myocardial texture features across gender and age groups were analyzed through Student's t-tests or Wilcoxon signed-rank tests. Spearman correlations were analyzed between the myocardial texture features and age, native T1 value and extracellular volume (ECV).  Results  Of the 59 participants, 28 were women and 29 were in the younger age group (< 45 years old). The male participants had higher left ventricular mass index (Lvmassi) and lower native T1 than their female counterparts (P < 0.01). No gender differences in blood pressure, heart rate, left ventricular ejection fraction (LVEF) and ECV values were found. Ten of the forty myocardial texture features showed gender differences, including two first order features and eight Grey-level co-occurrence matrix (GLCM) features. Gender differences appeared in five first order features and eight GLCM features in the younger group (< 45 years old), but not in the older group (≥45 years old). Eight myocardial texture features were correlated with age, including five first order features and three GLCM features (all P < 0.01). Six first-order texture features were correlated with Native T1 values of the left ventricle middle myocardium. Three first-order texture features were correlated with ECV.  Conclusion  Myocardial texture features in T1 mapping images vary by gender and age in healthy Han populations.

 

Keywords: Cardiac magnetic resonance, T1 mapping, Texture feature, Age, Gender

 

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References


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