MRI Devices Corporation, Waukesha, Wis, offers the MRIDC High Resolution Head Coil, an 8-channel dome design that produces SNR improvements at 1.5T.? Signal-to-noise in the center of the coil is approximately 35% greater than standard coils, and over 100% greater at the periphery of the head, the company states.? (800) 524.1476; .