Since the DRLs have been in use in Finland for approximately 20 years, the users of radiation are typically accustomed to the concept and compare their average doses to the DRLs according to the requirements in the legislation. Despite the long history, there is always room for improvement in establishing DRLs. Encouraging the facilities to use automatic dose management systems would increase the number of patient doses to be analysed. A proper national PACS with customised interfaces for facilities and competent authority could enable constantly updated statistics to base the DRLs on.

To overcome the concept of a normal-sized patient, the approach of a DRL curve could be considered also for adult patients. Especially with the increasing amount of data from national PACS and automatic dose management systems, more comprehensive statistics from the dose distributions could be presented together with the DRLs to encourage higher level of optimisation in the facilities.