Download LED Luminaire Installation for Magnetic Resonance Imaging Suites

LED Luminaire Installation for Magnetic Resonance Imaging Suites (MRI)
Magnetic Resonance Imaging (MRI) machines generate strong magnetic fields to create images which aid in medical
diagnoses. Objects and equipment inside the MRI suite must be non-ferromagnetic and the electrical wiring entering must
be filtered so as not to interfere with the medical imaging. The light source operating inside the room must not produce
interference. In the past, dimmable tungsten halogen lamps on direct current have been used but they were inefficient and
had a very short life. Today, LED luminaires with remote constant current drivers are ideal for MRI applications since they
are energy efficient, have a very long useful life and are dimmable.
The Lighting Quotient offers several LED luminaires specifically designed for MRI suites with non-ferromagnetic
components and remote drivers mounted outside of the shielded room. Each driver’s output must be filtered upon entry
into the shielded MRI suite.
Since MRI filters can be expensive it is recommended to contact The Lighting Quotient prior to specification as it may be
possible to reduce the number of drivers and MRI filters required (depending upon the layout and type of luminaires).
The Lighting Quotient offers accessory MRI room filters (AMR02050) to individually filter the output of each remote LED
driver entering the shielded area of the MRI suite.
AMR02050 Specifications
Maximum Rated 250V
Case Material
Plated Steel
Voltage
Rated Current
2 wires @ 5A
Operating
-25°C to 85°C
(amps)
Temperature
Overload
7.5A for 10
Output wires (load
UL1015
minutes
side)
Hi-pot Rating
Per UL 1283
Attenuation
>100dB (5MHz to 10GHz)
Voltage Drop at
<1%
IEC Climatic category 25/85/21
rated current
AMR02050 filters provide 100 decibels of attenuation on the driver output lines from 5MHz to 10GHz up to 5 amps of
current. Specifier shall confirm performance complies with filter requirements of the specific MRI equipment used.