highly significantp < 0.001
LV mass index (p = 0.001), IVSd (p < 0.001), and LVPWd (< 0.001) demonstrated a highly significant difference between positive and negative 99m Tc-PYP groups. 99m Tc-PYP positive patients had a higher relative apical sparing of LV LS (p < 0.001), and notably, no 99m Tc-PYP negative patient had a ratio > 1.0.