Facility reference level data

The curves below show the cumulative distributions for the DLP and CTDIvol from adult DRL surveys submitted to ARPANSA between the end of April 2013 (when we started collecting information regarding iterative reconstruction) and the end of 2018. The plots display the percentage of surveys that achieved a facility reference level (FRL) below the dose specified on the x-axis.

The blue curve represents all of the submitted data, the green curve represents the surveys where iterative reconstruction (IR) was used and the red curve represents the surveys where IR was not used. The data portrayed includes data older than that used to calculate the current DRLs and, consequently, the DRLs do not match the 75th percentile of the plotted distributions.


Cervical spine

Soft tissue neck


Chest abdomen pelvis

Kidney Ureter Bladder

Abdomen pelvis

Lumbar spine