Table 1.

Noise, SNR, and CNR from Phantom Imaging in Different-Sized Phantoms

Note.- Average values for all data using 100, 120, 140, 160, 180, 200, 250, and 290 mAs, respectively, are shown. ^*P value indicates p value from repeated measures analysis of variance, ^†P_1,2,3indicates that all three p values from Bonferroni correction are < 0.05. AIDR = adaptive iterative dose reduction, CNR = contrast-to-noise ratio, FBP = filtered back projection, Mild = AIDR mild reconstruction algorithm, SNR = signal-to-noise ratio, STD = AIDR standard reconstruction algorithm, STR = AIDR strong reconstruction algorithm, 24 = 24-cm phantom, 30 = 30-cm phantom, 40 = 40-cm phantom, respectively