As a leader in the medical shielded enclosure industry, Holland Shielding Systems has the established experience, practical knowledge, advanced techniques and design ideas necessary to build dependable state-of-the-art MRI facilities
High quality RF shielding
Dependable state-of-the-art shielded MRI facilities – High quality RF shielding for Magnetic Resonance Imaging
The MRI Faraday cages are used in combination with all big manufactures of MRI systems like Siemens, Philips, Hitachi, General Electric and Toshiba. A MU-COPPER™ wallpaper system has been developed to transform a (mobile) medical room into a highly qualified MRI room. The image quality of the scan highly depends upon the shielding measures, as well as the performance of other sensitive equipment that might be influenced by lift shafts (ferrous metal objects) and traffic. Certain cases may require magnetic shielding for the magnetic fringe field within the room.
The warranty on these easy to apply Mu-Copper foil systems is 10 years. Mu-copper foil systems last for decades when installed under our strict quality control and can be used for future systems, in an extraordinary wide frequency range.
Customized shielding cages
Due to Holland Shielding Systems flexible business management we have the ability to provide you with high quality single source solutions. As a single source provider, we coordinate all aspects of the process such as designing the system, providing quality materials, installing the components and conducting final RF compliance testing while assuring clear imaging, low noise(less) and noise controlled measurements.
We can customize our regularly updated (f) MRI shielding cages to your specifications to help you shield all types of permanent and superconducting magnet MRI scanners. Optionally we can provide an emergency venting panel, additional windows/skylights, HVAC waveguide vents, pipe penetration waveguides, utilities shielding, EMI rated power- and signal line filters, backlit panels, etc.
Specifications MRI Faraday cage (depending on the construction)
We can meet any specification required for the MRI facility. A typical performance requirement of a MRI shielded cage is 100 dB RF signal attenuation from 60 MHz to 130 MHz. Holland Shielding systems also helps you design and or adjust the MRI facility to meet the 5 Gauss line requirement in order to meet ICNIRP requirements stated as law in many European countries.
- Customization Complete range of solutions to meet unique shielding requirements and site conditions
- Design Expertise We have a team of dedicated professionals with specific extensive experience on MRI facility shielding
- Safety All safety and health regulations are respected
- Testing RF qualification and acceptance tests as well as a ground isolation test after the completion of installation
For more information please take a look at the chapter magnetic shielding.
Solutions for noise levels produced by MRI environments
With the introduction of more powerful gradient coils, today’s high field MRI scanners are producing increasingly high noise levels. During a typical scan sequence, many newer MRI systems will produce average sound pressure levels (SPL) as high as 100 to 110 dBA, with peak levels of 120 dB.
While the patient located at the epicenter of the resonator module is exposed to the noise for only a short time during a scanning procedure, technicians and other staff are subjected to long-term noise exposure. Moreover, the noise can travel from the MRI room into adjoining rooms and corridors, thereby disturbing other building occupants. Three typical cases are:
- New building complexes where adjacent suites will be affected
- Older facilities that were not originally intended for MRI systems
- Hospitals and clinics for which noise suppression specifications often exist
The first step in designing acoustic shielding for sound abatement in your MRI suite and adjoining areas is to gain an understanding of noise sources and sound transmission. From a given MRI scanner, noise may be generated through two acoustic transmissions:
- Air (airborne noise) and/or
- Building structure (structure borne noise)
Airborne noise arises when the magnet produces high-energy pressure waves that excite the air within the MRI room. Airborne noise may be transmitted into surrounding rooms by escaping through openings such as seams, small holes, HVAC ducts, waveguide entrances, penetration panels and cracks. The noise can travel great distances.
Structure-borne noise is carried through solid structures rather than through the air. Structure-borne noise occurs when gradient coils in the scanner cause mechanical excitation of the floor or building structure, which in turn causes the building to vibrate. The vibration of the surfaces in surrounding spaces then radiate as acoustic noise. The noise concern can be further complicated when the MRI system is installed in an elevated floor condition.
Due to our know how of managing sound and vibrations we can offer technical solutions for all kind of acoustic shielding. Also think about emergency generators, compressors, pumps and other technical equipment.