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Table 3 Results of voxel-based analysis for each TR compared to the RR (p values stated as 0 are p values below that calculable by R)

From: Influence of X-ray computed tomography (CT) exposure and reconstruction parameters on positron emission tomography (PET) quantitation

mAs kVp Pitch Reconstruction CTDI % Voxels >QSD Maximum voxel difference Mean voxel difference p value
15 80 0.671 FBP 0.3 0.93% 23.03% 0.45% 0.00E+00
15 80 0.671 IR 0.3 5.96% 67.19% 1.43% 0.00E+00
15 80 0.828 FBP 0.3 0.31% 21.08% 0.35% 0.00E+00
15 80 0.828 IR 0.3 4.98% 56.79% 1.18% 0.00E+00
15 100 0.671 FBP 0.6 0.05% 15.40% 0.23% 0.00E+00
15 100 0.671 IR 0.6 1.22% 31.48% 0.56% 0.00E+00
15 100 0.828 FBP 0.6 0.07% 16.09% 0.23% 0.00E+00
15 100 0.828 IR 0.6 1.05% 29.29% 0.52% 0.00E+00
15 120 0.671 FBP 1 0.00% 5.85% 0.13% 0.00E+00
15 120 0.671 IR 1 0.00% 7.03% 0.14% 0.00E+00
15 120 0.828 FBP 1 0.00% 7.35% 0.14% 0.00E+00
15 120 0.828 IR 1 0.00% 6.38% 0.11% 0.00E+00
25 80 0.671 FBP 0.5 0.10% 14.62% 0.23% 0.00E+00
25 80 0.671 IR 0.5 3.24% 41.31% 0.88% 0.00E+00
25 80 0.828 FBP 0.5 0.05% 13.89% 0.20% 0.00E+00
25 80 0.828 IR 0.5 2.08% 38.10% 0.73% 0.00E+00
25 100 0.671 FBP 1 0.00% 6.91% 0.12% 0.00E+00
25 100 0.671 IR 1 0.19% 14.54% 0.28% 0.00E+00
25 100 0.828 FBP 1 0.00% 7.43% 0.12% 0.00E+00
25 100 0.828 IR 1 0.09% 14.38% 0.27% 0.00E+00
25 120 0.671 FBP 1.6 0.00% 4.06% 0.10% 0.00E+00
25 120 0.671 IR 1.6 0.00% 4.06% 0.08% 0.00E+00
25 120 0.828 FBP 1.6 0.00% 7.72% 0.09% 0.00E+00
25 120 0.828 IR 1.6 0.00% 7.19% 0.07% 0.00E+00
40 80 0.671 FBP 0.8 0.01% 11.50% 0.17% 0.00E+00
40 80 0.671 IR 0.8 1.22% 28.15% 0.55% 0.00E+00
40 80 0.828 FBP 0.8 0.00% 10.28% 0.16% 0.00E+00
40 80 0.828 IR 0.8 0.96% 22.87% 0.45% 0.00E+00
40 100 0.671 FBP 1.6 0.00% 4.43% 0.09% 0.00E+00
40 100 0.671 IR 1.6 0.00% 8.00% 0.15% 0.00E+00
40 100 0.828 FBP 1.6 0.00% 4.10% 0.08% 0.00E+00
40 100 0.828 IR 1.6 0.00% 6.22% 0.12% 0.00E+00
40 120 0.671 FBP 2.6 0.00% 4.59% 0.06% 0.00E+00
40 120 0.671 IR 2.6 0.00% 4.59% 0.05% 0.00E+00
40 120 0.828 FBP 2.6 0.00% 4.79% 0.06% 0.00E+00
40 120 0.828 IR 2.6 0.00% 6.30% 0.12% 0.00E+00
50 80 0.671 FBP 0.9 0.10% 13.61% 0.20% 0.00E+00
50 80 0.671 IR 0.9 1.13% 21.73% 0.50% 0.00E+00
50 80 0.828 FBP 0.9 0.03% 14.10% 0.19% 0.00E+00
50 80 0.828 IR 0.9 0.86% 18.32% 0.42% 0.00E+00
50 100 0.671 FBP 2 0.00% 4.59% 0.07% 2.94E-120
50 100 0.671 IR 2 0.00% 6.95% 0.11% 0.00E+00
50 100 0.828 FBP 2 0.00% 6.54% 0.11% 0.00E+00
50 100 0.828 IR 2 0.00% 7.07% 0.18% 0.00E+00
50 120 0.671 FBP 3.3 0.00% 5.93% 0.12% 0.00E+00
50 120 0.671 IR 3.3 0.00% 3.13% 0.04% 0.00E+00
50 120 0.828 FBP 3.3 0.00% 1.58% 0.03% 0.00E+00
50 120 0.828 IR 3.3 NA NA NA NA