Welcome to the web portal for the National Diagnostic Reference Level Service’s

Multi-Detector Computed Tomography Survey

The survey is a tool for Australian MDCT providers to compare the doses they deliver with the national DRLs and thereby meet their regulatory obligations – all while helping shape the future DRLs.

This portal has been developed by, and is operated and maintained by, the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA). If you would like more information about DRLs or about using the service, see the following links:

NDRLS home page
Includes general information about DRLs and the NDRLS.

Before you register
Information on the MDCT survey registration process, and the information collected.

Before you enter data
Information on the various protocols included in the survey.

Understanding your report
Information to help you understand your NDRLS MDCT data report.

Download the user guide:

National Diagnostic Reference Level Service User Guide

National Diagnostic Reference Level Service User Guide