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Table 4 Median CTDIvol (mGy) per scanner for the different CT regions. P75 and P25 DRL levels of the nationwide survey as reference. *Separate protocols for the thorax and abdomen with different CTDIvol

From: Benchmarking adult CT-dose levels to regional and national references using a dose-tracking software: a multicentre experience

  CT- head CT-abdomen-pelvis CT- thorax CT-pulmonary embolism CT-lumbar spine CT-thorax-abdomen CT-cervical spine
CT1 25.2 10.8 5.3 12.4   12.5 11.1
CT2 25.6 9.6 6.6 10.3 17.5 12.3 11.4
CT3 53.6 9.0 4.2 11.0 28.6 6.4 30.5
CT4 20.5 4.3 3.0 2.3 12.1   6.1
CT5 18.4 4.0 3.1   13.7 * 6.6
DRL P75 58.0 13.0 10.0 20.0 32.0 13.0 32.0
DRL P25 38.0 7.0 5.0 6.5 17.5 6.5 15.0