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Table 5 Distribution of ranges, standard deviation (SD) and mean values of dose length product (DLP), Computed Tomography Dose Index (CTDIvol) and size specific dose estimate (SSDE)

From: Image quality and pathology assessment in CT Urography: when is the low-dose series sufficient?

Phase DLP
mGy .cm
CTDIvol
mGy
SSDE
mGy
Native
 Mean 135.7 2.84 3.51
 SD 38.3 0.73 0.79
 Range 63.8–257.6 1.45–5.39 2.28–6.93
Nephrogram
 Mean 336.2 6.9 8.52
 SD 100.6 1.9 2.55
 Range 151.5–696.8 3.46–14.58 5.45–18.75
Excretory
 Mean 135.4 2.83 3.49
 SD 38.7 0.73 0.79
 Range 65.4–254.0 1.49–5.32 2.29–6.84