Radio frequency (RF) shielding is required for all MRI scanners. The construction of an RF shielded enclosure reduces the RF noise inside the MRI exam room. Noise sources can originate from radio stations, electrical equipment, and other various things. The air is full of random radio frequency signals. MRI uses radio signals to make images and the external RF in the environment has the potential to cause image artifacts if not shielded from the MRI exam room. The shielding consists of a metal layer installed in the structure of the MRI exam room, including walls, floor, and ceiling.
Various metals can be used in a number of construction methods. There are pros and cons with all the RF shielding systems available, however, solder seamed Copper is the best method when considering quality and long term reliability. Other RF shielding systems may utilize galvanized steel and modular panels that are bolted together. The shielding needs to protect every entrance to the room including doors, windows, HVAC ductwork, electrical circuits for lights/outlets, and any other apertures that penetrate the room. All penetrations must be passed through RF filters or waveguides to reduce the level. We offer both solder seamed copper and modular panel systems and will tailor to the needs of the customer and project.