Skip to main content

Table 4 CR, BV, and LE for the six tests performed with QUICK phantom as average ± standard deviation of datasets from all QUICK sites combined [17]

From: Evaluation of PET quantitation accuracy among multiple discovery IQ PET/CT systems via NEMA image quality test

 NEMA ACQ and RECON OSEM (test 1)NEMA ACQ and RECON BSREM (test 2)NEMA ACQ and clinical RECON OSEM (test 3)NEMA ACQ and clinical RECON BSREM (test 4)Clinical ACQ and RECON OSEM (test 5)Clinical ACQ and RECON BSREM (test 6)
SphereContrast recovery (%): average ± SD
10 mm29.4 ± 2.039.9 ± 2.517.9 ± 1.617.6 ± 2.418.0 ± 2.118.8 ± 1.1
13 mm42.9 ± 1.653.5 ± 1.130.8 ± 3.034.1 ± 3.430.7 ± 3.036.1 ± 2.2
17 mm52.9 ± 1.661.4 ± 1.545.0 ± 4.349.5 ± 3.143.8 ± 4.450.2 ± 1.6
22 mm60.5 ± 1.267.5 ± 1.454.8 ± 4.560.7 ± 2.654.9 ± 4.361.6 ± 0.5
28 mm67.9 ± 0.777.7 ± 1.059.3 ± 1.666.8 ± 2.459.3 ± 1.767.5 ± 1.5
37 mm74.6 ± 0.483.1 ± 0.666.6 ± 2.375.9 ± 1.866.9 ± 1.776.9 ± 1.1
SphereBackground variability (%): average ± SD
10 mm7.4 ± 2.18.9 ± 0.64.3 ± 1.84.0 ± 1.24.7 ± 1.84.8 ± 1.6
13 mm5.9 ± 1.67.1 ± 0.53.8 ± 1.63.5 ± 1.14.2 ± 1.64.2 ± 1.4
17 mm4.6 ± 1.25.4 ± 0.43.2 ± 1.33.0 ± 0.83.6 ± 1.43.5 ± 1.2
22 mm3.6 ± 0.94.1 ± 0.32.8 ± 1.12.4 ± 0.63.1 ± 1.22.9 ± 0.9
28 mm2.8 ± 0.73.1 ± 0.32.3 ± 0.92.0 ± 0.42.6 ± 0.92.3 ± 0.7
37 mm2.2 ± 0.52.4 ± 0.22.0 ± 0.71.7 ± 0.42.3 ± 0.81.9 ± 0.5
 Lung error (%): average ± SD
 16.4 ± 0.512.2 ± 0.623.1 ± 1.414.3 ± 1.122.6 ± 2.513.1 ± 1.3