Myocardial area at risk and salvage in reperfused acute MI measured by texture analysis of cardiac T2 mapping and its prediction value of functional recovery in the convalescent stage

We sought to distinguish area at risk from salvage myocardial zone and predict left ventricle functional recovery in the convalescent stage by Texture Analysis (TA) of T2−Mapping. One hundred six patients diagnosed with AMI treated percutaneous coronary intervention (PCI) underwent acute cardiac magnetic resonance imaging (CMR) 45 whom had a subsequent CMR scan following recovery. Cine imaging, T2−Mapping, T2−weighted STIR LGE were performed. In texture analysis, regions interest (infarcted, salvageable, remote) drawn two blinded, independent readers. Seven features on T2−Mapping selected: Perc.50%, S(2,2)InvDfMom, S(2.−2)AngScMom, S(4,0)Entropy, 45dgrLngREmph, 45dgr_Fraction 135dr_GLevNonU. Among them, average value 135dr_GLevNonU infarct zone, AAR remote was: 61.96±26.03, 31.811±18.933 99.839±26.231, respectively. Additionally, provided highest under curve (AUC) receiver operating characteristic (ROC curve) for distinguishing each subgroup (all patients, MVO and)were 0.845 ± 0.052 0.855 0.083 0.066, respectively, more promise than mean (p<0.001). The AUC differentiating is 0.942±0.041. are not associated decreased strain, ejection fraction (EF) or remodeling (LVR) analysis (p>0.05). TA T2−mapping can both without reperfused AMI. However, these able patients’ stage.