How DOSE supports the Medical Physics Expert in identifying and analysing significant events

July 13, 2021

By Dr. rer. nat. Hans Dieter Nagel

How DOSE supports the Medical Physics Expert in identifying and analysing significant events - Introduction
Part 1: Identification of significant events according to StrlSchV Annex 14 I and II (1)
Part 2: Identification of significant events according to StrlSchV Annex 14 I (2) a and 14 II (2+3) a
Part 3: Determining the causes of dose limit exceedances in the CT application area 

The availability of big data and the need for stricter reporting when it comes to significant events has made dose management systems invaluable tools in the daily practice of a medi-cal imaging facility. Monitoring the workflow and the exam quality in a department used to be a tedious work which required constant presence in the rooms or hours of searching the PACS. Especially for the purpose of defining and complying with Diagnostic Reference Levels (DRLs), a set of limited patient exams of each type (incl. patient demographics, exam set-tings and device output) would be collected and sent to the legal authorities. That was not the optimal way as it was very time-consuming for the Medical Physics Expert (MPE) and it would be prone to errors or missing out on outliers. Ever since dose management systems became available, checking compliance with DRLs has become a much easier and safer pro-cess. It also allows for investigation of all the performed exams, rather than a limited num-ber of them, identification of outliers and optimization when problems are found.

The newer radiation legislations though require much more than comparison against DRLs. They require the MPE to dig deeper into the values and find which events are significant and which ones not. Having as an example the latest German radiation legislation, it seems that complying with the requirements is not possible without an advanced system to assist in this task.

DOSE by Qaelum, has invested time and effort in implementing a sophisticated scheme to automatically monitor and report the events as required by each paragraph of the German radiation legislation, for all modalities.

low dose ct

The user can evaluate the event having all the necessary information and can register the actions that have been performed.

low dose ct

With an intuitive interface and help buttons to indicate the flow and methodology, DOSE provides the significant events at your fingertips. A high degree of flexibility allows for cus-tomization of the notification rules to the needs of each medical imaging facility.

low dose ct

In order to address this important topic, Qaelum will publish a series of educational blog-posts in the following weeks.

In this series, a user of DOSE, the well-known Medical Physics Expert, Dr. rer. nat. Hans Dieter Nagel, will indicate how he uses DOSE to fulfil the requirements of the German legisla-tion for the imaging facilities that he offers his consulting services.

The first two blogposts will deal with StrlSchV Annex 14 I and II (1) and StrlSchV Annex 14 I (2) a, respectively. The third one will describe how Dr. Nagel analyses the causes for dose limit exceedances in CT.

Stay tuned for some educational weeks!

Disclosure statement

Dr.Nagel  Dr. Nagel worked for many years as a clinical scientist for one of the leading medical imaging manufacturers. In 2009, he founded his own company focusing on MPE services in the application areas of CT and XA.