Figure 8

HA histograms of normal human, normal sheep and infarcted sheep hearts . HA Histograms in a normal human heart with fiber length limited to πR (A-C) and the dimensions of a small ROI (D-F). HA histograms of a normal and an infarcted (remote zone) sheep heart have been superimposed (G-L). The histogram of the normal heart is in mauve, the remote zone is in bright red, and areas where the histograms overlap are in dark red. The histograms in the remote zone are significantly shifted to the right, both with fiber length limited to πR (G-I) and the ROI (J-L). The variance ratio (i.e. the ratio between the negative and positive variance in the median HA histogram) is significantly reduced in the remote zone, consistent with the rightward HA shift, both when fiber length is limited to πR (M) and to the ROI (N).