Compatibility of diagnosing LVD between HBW and PSD HBW PSD Total Positive (PSD ≥31.99) Negative (PSD <31.99) Positive (≥84.25) 76 5 81 Negative (<84.25) 1 24 25 Total 77 29 106 Compatibility Po = 0.94 k = 0.85 p < 0.05 Pe = 0.62 The observed compatibility of diagnosing LVD on Gated - SPECT between PSD and HBW is 94.3% (100/106) with Kappa coefficient of 0.85.