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Table 1 Average maximum and minimum mid systolic and peak systolic strain rate and end systolic strain.

From: Strain and strain rate parametric imaging. A new method for post processing to 3-/4-dimensional images from three standard apical planes. Preliminary data on feasibility, artefact and regional dyssynergy visualisation

  Mid syst. strain rate (s-1) Peak syst. strain rate (s-1) End syst. strain (%)
  Max. Min. Diff. Max. Min. Diff. Max. Min. Diff.
Controls: -0.01 (0.16) -1.21 (0.27) -1.20 (0.35) -0.89 (0.77) -1.11 (0.70) -0,21 (1.31) 0% (3) -22% (3) -22% (5)
Patients: 0.05 (0.17) -1.51 (0.37) -1.36 (0.39) 0.02 (0.16) -1.66 (0.36) -1.68 (0.36) 5% (7) -25% (4) -30% (9)
P: NS NS NS 0.03 NS 0.04 NS NS NS
  1. Measurements made in points identified as max and min. mid systolic strain by bull's eye (standard deviations in parentheses). In systole, the deformation is shortening, i.e. negative values, so the lowest negative value indicates most deformation, i.e. highest contractility.