Radial strain and histology. A and B. Parametric image representation of radial strain at mid left ventricle at baseline (A) and following 30 minutes of ischemia/60 minutes of reperfusion (B). The color represents radial strain at endsystole with scale to the right of the image. There is reduction in radial strain in all segments but greatest in the anteroseptum, anterior and anterolateral segments. D and E. Graphical representation of radial strain by time in the cardiac cycle at baseline (D) and following ischemia-reperfusion (E) demonstrates reduction in systolic strain in all segments. C. TTC histology at mid ventricle. There are pale areas in the anteroseptal (AS), anterior (A) and anterolateral (AL) segments corresponding to lack of TTC and myocardial necrosis. The inferolateral (IL), inferoseptal (IS) and inferior segments show no necrosis. The numbers in each region represent the mean ± standard deviation of the area of necrosis in each segment.