MRI windows must serve a dual purpose: Block out distorting radio frequencies, and contain the 5-gauss magnetic field within the controlled area. NELCO windows keep the magnetic field generated by the MRI from expanding into adjacent areas such as patient waiting rooms, spaces used for other modalities, and service areas used by staff. Because each site is unique, and the type of magnet varies, NELCO works closely with clients and MRI manufacturers to confidently address every specific need.