Does the choice of CMR feature-tracking software affect the reproducibility and intervendor agreement of myocardial mechanics assessment?
Reproducibility of CMR feature-tracking for myocardial mechanics varies significantly depending on the specific strain parameter and the software vendor used.
variability between software types was lowest for Ecc (ICC 0.81 0.63e0.91, 0.87 0.72e0.94 and CoV 12.47% and 14.3%, respectively) irrespective of the number of analysis repetitions. Err and torsion showed higher variability that markedly improved for torsion with repeated analyses and to a lesser extent for Err. On an intravendor level TomTec showed better reproducibility for Ecc and torsion and Circle for Err.
Schuster et al. (Thu,) studied this question.