This study compared the test-retest reproducibility of strain measures derived from two software packages (feature-tracking software (FT) and tissue-tracking (TT)) in disease populations with preserved ejection fractions.



feature-tracking software
This study compared the test-retest reproducibility of strain measures derived from two software packages (feature-tracking software (FT) and tissue-tracking (TT)) in disease populations with preserved ejection fractions.



tissue-tracking (TT)