Brief Article
Copyright ©2012 Baishideng Publishing Group Co.
World J Radiol. Mar 28, 2012; 4(3): 102-108
Published online Mar 28, 2012. doi: 10.4329/wjr.v4.i3.102
Table 2 Computed tomography numbers and quantitative image noise for ideally centered and off-centered patients (mean ± SD)
DirectionaHUpHULivHUaSDpSDLivSD
Ideal centering-97.5 ± 15.9-92.8 ± 15.1117.0 ± 21.59.9 ± 4.911.8 ± 4.317.0 ± 3.7
A-96.9 ± 11.5 (0.4)-91.4 ± 12.5 (0.25)111.1 ± 24.3 (0.05)11.8 ± 4.1 (0.004)a12.8 ± 3.8 (0.045)a18.8 ± 5.3 (0.003)a
B-95.5 ± 14.4 (0.16)-89.1 ± 14.5 (0.03)a121.0 ± 24.5 (0.1)9.8 ± 2.6 (0.33)12.8 ± 3.9 (0.03)a17.6 ± 4.3 (0.09)