TABLE 1

Correlation Between Planar ERNA and Two Gated SPECT Acquisitions Processed with QGS and MTK

ParametersQGS 20 minQGS 4 hMTK 20 minMTK 4 h
Ejection fraction (%)*30 ± 1330 ± 1334 ± 14†31 ± 13
Range6–587–608–648–63
Regression equationy = 0.77x + 4.74y = 0.80x + 3.34y = 0.87x + 5.52y = 0.80x ± 4.87
r0.860.900.880.87
SEE (%)6.685.756.766.61

  • ↵* Reference ejection fraction = 33 ± 14, range = 9–69.

  • ↵† Obtained values did not differ significantly from corresponding ERNA values. Other processing did significantly underestimate reference ejection fractions.

  • Data are expressed as mean ± SD.