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Table 2 The best EF estimates of IQ-SPECT and LEHR imaging protocols and corresponding EI, EDV and ESV values analysed using QGS and 4DM software

From: Ejection fraction in myocardial perfusion imaging assessed with a dynamic phantom: comparison between IQ-SPECT and LEHR

QGS
Phantom EF setting IQ-SPECT LEHR
EI EF EDV [ml] ΔEDV [%] ESV [ml] ΔESV [%] EI EF EDV [ml] ΔEDV [%] ESV [ml] ΔESV [%]
45 21 45 38 −33 21 −36 12 44 44 −23 24 −26
55 17 53 42 −43 18 −44 12 54 54 −26 25 −23
65 16 65 54 −42 19 −41 12 65 67 −28 24 −26
70 16 70 63 −43 19 −41 14 69 80 −28 24 −26
4DM
Phantom EF setting IQ-SPECT LEHR
EI EF EDV [ml] ΔEDV [%] ESV [ml] ΔESV [%] EI EF EDV [ml] ΔEDV [%] ESV [ml] ΔESV [%]
45 21 45 38 −33 21 −35 30 45 55 −3 30 −7
55 16 56 42 −43 18 −44 20 58 54 −26 26 −20
65 18 67 54 −42 18 −44 16 65 74 −21 26 −20
70 22 70 57 −48 17 −47 10 70 74 −33 22 −32
  1. The percentage differences, ΔESV and ΔEDV, to CT volumes are also shown