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Fig. 6. —Box plots show median of summarized mean values of image
quality rating based on axial source images and multiplanar reformations (MPR)
using thin-section (4 x 1 mm collimation) and standardized (4 x
2.5 mm collimation) 4-MDCT trauma protocols. Each box plot ranges from 25th to
75th percentile. Minimum and maximum values are indicated by short horizontal
lines. Standardized 4-MDCT trauma protocol (4 x 2.5 mm collimation)
shows significantly reduced image quality for multiplanar reformation images
compared with thin-section spinal protocol (p < 0.001), whereas
difference between both protocols with regard to axial images was not
statistically significant (p > 0.061).
