imaging was 5 days (2-7 days).Mean CMR-LVEF was 59±14% and mean wall motion score index (WMSI) was 1.27±0.40.Myocardial edema was found in 30 patients (71%) and mean number of myocardial segments affected by edema was 4.8±2.5.We found a negative correlation between myocardial edema extensión and time from admission to CMR imaging (r -0.464, r2 0.215; p=0.002).CMR-WMSI was significantly higher in patients with myocardial edema (1.36±0.45vs 1.05±0.08;p=0.03) but we found no differences in mean CMR-LVEF (59±14% vs 59±15%; p=0.93).Widespread negative T-wave development at the time of CMR imaging was associated with a smaller number of myocardial segments with edema (2.9±2.4 vs 6.1±3.4;p=0.03).However, no correlation was found between other ECG features or cardiac biomarkers peak, and myocardial edema.Conclusions: Myocardial edema is a common CMR finding in TTS patients and showed a progressive recovery over time.Delaying the performance of CMR during hospital admission reduces substantially the possibility of identifying myocardial edema.Other clinical factors (ECG changes and cardiac biomarkers) are not reliable predictors of edema by CMR.Moreover, our study suggests that in TTS patients recovery of contractility passes through a previous recovery of edema.
This paper focuses on the tire force characteristics related to the vehicle speed. We constructed a mechanical tire model using a Voigt-Type viscoelastic spring system for the tread rubber. And, we analyze the force distribution along the contact length, the dependence of vehicle speed to the tire forces and the moments to a change in side slip angle and coefficient of viscosity. Finally, it is shown that the tire model has good agreement with actual measurements results qualitatively, and also it is found that the characteristics of lateral force have independence to the vehicle speed.
