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Table 1 Analytical test case: Relative deviation of analytical peak rotation and torsion per AoRdisp*

From: Regional assessment of left ventricular torsion by CMR tagging

  Simulated apex displaced Simulated base displaced Both displaced in same direction Both displaced in opposite direction
Torsion: global and transmural layers 0.03 0.03 0.05 0.05
Torsion: circumferential segments 0.56 ± 0.27 0.45 ± 0.26 0.50 ± 0.29 0.90 ± 0.44
Rotation: global and transmural layers 0.001 0.002 n/a n/a
Rotation: circumferential segments 0.64 ± 0.29 0.68 ± 0.40 n/a n/a
  1. *The simulated apex and base are the largest and smallest Z value (Eq. [5–7]) of the cylinder. Torsion and rotation calculated in circumferential segments are averaged over all segments.