Evidence-Based Medicine
Copyright ©The Author(s) 2017.
World J Gastrointest Oncol. Oct 15, 2017; 9(10): 423-430
Published online Oct 15, 2017. doi: 10.4251/wjgo.v9.i10.423
Table 3 Qualitative scoring of image noise, image sharpness and diagnostic quality of computed tomography images from Reader 1 and Reader 2
Image noise
Image sharpness
Diagnostic quality
Reader 1Reader 2Reader 1Reader 2Reader 1Reader 2
Low-dosea3.4 ± 0.63.6 ± 0.63.7 ± 0.53.7 ± 0.53.7 ± 0.53.8 ± 0.4
Group A (n = 8)3.6 ± 0.73.8 ± 0.53.6 ± 0.53.5 ± 0.53.9 ± 0.43.8 ± 0.5
Group B (n = 25)3.4 ± 0.63.6 ± 0.63.8 ± 0.53.8 ± 0.43.7 ± 0.63.8 ± 0.4
Group C (n = 13)3.1 ± 0.43.6 ± 0.53.6 ± 0.53.9 ± 0.43.6 ± 0.54.0 ± 0.0
Group D (n = 5)3.3 ± 0.63.0 ± 1.04.0 ± 0.03.3 ± 0.64.0 ± 0.03.7 ± 0.6
Standard-doseb3.6 ± 0.73.5 ± 0.63.3 ± 0.73.5 ± 0.63.7 ± 0.53.8 ± 0.4
Group A (n = 8)3.9 ± 0.43.5 ± 0.53.1 ± 0.63.4 ± 0.53.9 ± 0.43.8 ± 0.5
Group B (n = 25)3.7 ± 0.53.7 ± 0.53.5 ± 0.63.5 ± 0.63.8 ± 0.43.8 ± 0.4
Group C (n = 13)3.3 ± 0.53.3 ± 0.52.9 ± 0.73.9 ± 0.43.6 ± 0.54.0 ± 0.0
Group D (n = 5)2.3 ± 1.53.0 ± 1.03.0 ± 1.03.3 ± 0.62.7 ± 1.23.7 ± 0.6
P-valuea-b0.2920.6550.0120.0880.4370.206
k Cohen Reader 1-Reader 20.694a-0.756b0.783a-0.672b0.704a-0.786b