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Table 3 Recovery coefficients (RCs) for the whole-parenchyma kidney phantoms, three different target-to-background ratios, and two different SPECT reconstruction iteration numbers

From: The magnitude of the partial volume effect in SPECT imaging of the kidneys: a phantom study

Whole-parenchyma phantom name Recovery coefficients [%]
36 iterations
Recovery coefficients [%]
72 iterations
Target-to-background ratio Target-to-background ratio
Infinity 10:1 5:1 Infinity 10:1 5:1
Pat7L 75.3 74.5 78.5 75.2 75.5 80.3
Pat7R 76.0 75.3 80.5 76.9 76.6 82.3
Pat8L 77.3 75.9 78.3 77.5 77.6 80.4
Pat8R 76.8 76.6 80.0 76.9 78.1 80.1
Pat9L 77.9 74.8 79.4 78.9 76.0 80.8
Pat9R 74.8 75.4 78.7 74.5 76.4 79.8
Pat10L 78.5 78.5 82.3 78.3 79.4 83.9
Pat10R 77.1 76.0 79.5 77.8 76.9 81.0
Pat11L 77.1 78.3 80.0 77.5 79.2 81.5
Pat11R 77.7 77.9 79.8 78.1 78.9 80.9
AVG ± SD 76.9 ± 1.2 76.3 ± 1.5 79.7 ± 1.2 77.1 ± 1.4 77.5 ± 1.4 81.1 ± 1.2
Ellipsoid 85.4 82.8 89.0 85.4 83.3 89.6
  1. The AVG ± SD row denotes the average plus/minus one standard deviation of all whole-parenchyma phantoms RCs. The last line contains the RCs of the ellipsoidal phantom for comparison. Values were obtained for LEHR collimation and the radionuclide 99mTc