Technische und normative Anforderungen an die Errichtung und Prüfung von MR-Räumen in Österreich

Abstract

Background
The planning and construction of magnetic resonance (MR) rooms require high standards in terms of technical precision, electromagnetic compatibility, safety, and hygiene. In particular, the quality of radio frequency (RF) shielding is critical for ensuring optimal image quality and the interference-free operation of MR systems. Against this background, the present study investigates the practical implementation of these requirements through the analysis of three completed MR projects in Austria, with a particular focus on the construction and measurement-based validation of RF enclosures.
Methods
Three MR projects with varying cabin materials (two steel, one aluminum) were documented. The implementation was reconstructed using technical blueprints, manufacturer interface descriptions, and photographic documentation. In addition, technical measurements of shielding effectiveness and galvanic isolation were conducted using shielding attenuation tests and insulation resistance measurements. The results were evaluated descriptively and discussed from a technical perspective.
Results
All three projects met the relevant standards for RF shielding and electrical isolation. Shielding attenuation reached at least 90 dB, with two projects achieving values of 100 dB. In all cases, insulation resistance exceeded the maximum measurable threshold of 100 Ω. The findings indicate that the quality of electrical bonding and the precision of execution at transition points, such as doors, windows, and quench pipe penetrations, are decisive for the technical effectiveness of the RF enclosure, regardless of the material used.
Conclusion and Discussion
The study confirms the critical importance of accurate, standards-compliant, and highquality implementation of RF requirements in MR room construction. While material selection (aluminum vs. steel) plays a secondary role, execution quality proved to be the key success factor. The results demonstrate that technically reliable performance can be achieved even under challenging logistical conditions when planning, interface management, and construction are well coordinated. These insights are highly relevant for optimizing future MR infrastructure projects and highlight the importance of quality assurance in preventing RF artifacts.

Date of Award	2025
Original language	German (Austria)
Awarding Institution	FH Gesundheitsberufe OÖ GmbH
Supervisor	Mario Scheweder (Supervisor)