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Table 3 Overall statistics of mean absolute error (MAE) and mean error (ME) comparing sCT and CT images for body, brain and bone. The results for bone are also presented separately for bone resected patients (n = 14) and non-resected patients (n = 6)

From: Clinical validation of a commercially available deep learning software for synthetic CT generation for brain

  Body Brain Bone Bone (Resected) Bone (Non-resected)
Number of patients 20 20 20 14 6
MAE [HU]
 Mean ± 1 S.D 62.2 ± 4.1 9.5 ± 0.7 173.8 ± 18.2 176.5 ± 18.8 164.1 ± 14.4
 Range 56.2–70.4 8.3–11.2 144.3–208.0 153.1–208.0 144.3–179.7
ME [HU]
 Mean ± 1 S.D − 5.6 ± 4.6 1.3 ± 2.0 − 41.9 ± 18.3 − 40.0 ± 18.3 − 46.3 ± 19.4
 Range − 13.5–1.5 − 2.7–4.5 − 74.8-(− 16.7) − 74.8-(− 16.7) − 70.0-(− 22.2)