Australian medical imaging providers are required under the ARPANSA Code of Practice (RPS C-5 Section 3.2.15, previously RPS 14 Section 3.1.8) to regularly compare typical patient doses to the national diagnostic reference levels (DRLs).

ARPANSA's NDRLS provides free tools for conducting dose comparisons: login or register for the multi-detector CT survey here or see the relevant imaging modality section for details.


Patient undergoing medical scan tended by male and female doctors
Find out more information on diagnostic reference levels, how they are derived and how you can calculate your facility reference levels,
Female doctor standng in front of medical scanner
View the diagnostic reference level tables for multi detector computed tomography, Image guided and interventional procedures (IGIP) and nuclear medicine.
Computed tomography scans of skull
Find out more about the Australian diagnostic reference levels for multi detector computed tomography for adult and paediatric patients.
Nuclear medicine scan of skull using positron emission tomography
Find out more about the Australian diagnostic reference levels for nuclear medicine and positron emission tomography procedures.
Fluoroscopy of the skull
Find out more about ARPANSA's efforts to develop DRLs for IGIP.
Bookshelf displaying reference material
View publications related to the National Diagnostic Reference Level Service.

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