National survey on dose data analysis in computed tomography
Elmar Max Merkle
Received: 19 January 2018 /Revised: 21 February 2018 /Accepted: 22 February 2018
European Society of Radiology 2018, corrected publication July 2018
Objectives A nationwide survey was performed assessing current practice of dose data analysis in computed tomog-
Material and Methods All radiological departments in Switzerland were asked to participate in the on-line survey composed of
19 questions (16 multiple choice, 3 free text). It consisted of four sections: (1) general information on the department, (2) dose
data analysis, (3) use of a dose management software (DMS) and (4) radiation protection activities.
Results In total, 152 out of 241 Swiss radiological departments filled in the whole questionnaire (return rate, 63%).
Seventy-nine per cent of the departments (n = 120/152) analyse dose data on a regular basis with considerable hetero-
geneity in the frequency (1-2 times per year, 45%, n = 54/120; every month, 35%, n = 42/120) and method of analysis.
Manual analysis is carried out by 58% (n = 70/120) compared with 42% (n = 50/120) of departments using a DMS.
Purchase of a DMS is planned by 43% (n = 30/70) of the departments with manual analysis. Real-time analysis of dose
data is performed by 42% (n = 21/50) of the departments with a DMS; however, residents can access the DMS in clinical
routineonlyin20%(n = 10/50) of the departments. An interdisciplinary dose team, which among other things com-
municates dose data internally (63%, n = 76/120) and externally, is already implemented in 57% (n = 68/120)
Conclusion Swiss radiological departments are committed to radiation safety. However, there is high heterogeneity
among them regarding the frequency and method of dose data analysis as well as the use of DMS and radiation
• Swiss radiological departments are committed to and interest in radiation safety as proven by a 63% return rate of the survey.
• Seventy-nine per cent of departments analyse dose data on a regular basis with differences in the frequency and method of
analysis: 42% use a dose management software, while 58% currently perform manual dose data analysis. Of the latter, 43%
plan to buy a dose management software.
• Currently, only 25% of the departments add radiation exposure data to the final CT report.
Keywords Surveys and questionnaires
Electronic supplementary material The online version of this article
(https://doi.org/10.1007/s00330-018-5408-0) contains supplementary
material, which is available to authorized users.
* Christina Heilmaier
Swiss Society of Radiology; c/o: ecos Office Center, Bellerivestrasse
11, CH-8008 Zürich, Switzerland
Federal Office of Health, Schwarzenburgstrasse 157,
CH-3003 Bern, Switzerland
Department of Radiology, University Hospital Basel, Petersgraben 4,
CH-4031 Basel, Switzerland
Institute of Diagnostic and Interventional Radiology, University
Hospital Zurich, Raemistrasse 100, CH-8091 Zurich, Switzerland
Institute of Radiology and Nuclear Medicine, Stadtspital Triemli
Zurich, Birmensdorferstrasse 497, CH-8063 Zurich, Switzerland
Department of Radiology, Kantonsspital Aarau, Tellstrasse 25,
CH-5001 Aarau, Switzerland