NDRLS 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 2015. 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 is more recent than the data used to specify the current DRLs and, consequently, the DRLs do not match the 75th percentile of the plotted distributions – in general, the 75th percentile is considerably lower than the DRL.
Abdomen Pelvis, Adult, Single phase
Chest, Adult Single phase
Chest, Abdomen, Pelvis, Adult, Single phase
Chest Abdomen Pelvis, Adult, Two phase
Head, Adult, Single phase
Lumbar Spine, Adult, single phase
Neck, Adult, Single phase
Further information on International Best Practice for Radiation Protection of Patients can be found on the International Atomic Energy Agency Radiation Protection of Patients website, which can be accessed via the following link: