Figure 2
From: Correlation of DTI tractography with electroanatomic mapping in normal and infarcted myocardium
(A) PA is approximately 4° in normal myocardium and is highly conserved across species. Regions of infarction, however, show a significant increase (p < 0.05) in PA consistent with myofiber disorganization. (B) Infarcted myocardium is also characterized by a wide dispersion of PA. (C) Correlation between myocardial voltage and PA was determined by a rational polynomial curve. Regions of normal myocardium are characterized by voltage > 1.5 mV and PA < 4°. Regions with heterogenous scar have a voltage between 0.5-1.5 mV and PA between 4-10°. Dense scar is characterized by PA > 10° and a very low voltage.