From: Comparison of 2D and 3D calculation of left ventricular torsion as circumferential-longitudinal shear angle using cardiovascular magnetic resonance tagging
r2 (T2D)
r2 (T*2D)
Time delay (time lags) (T2D, T*2D)
Base-apex
0.99 ± 0.01
0.98 ± 0.02
0.0 ± 0.0
Base-mid
0.97 ± 0.02
0.96 ± 0.03
Mid-apex
0.95 ± 0.02
0.93 ± 0.06
Average
0.96 ± 0.04