For over forty years Union City Filament has been producing x-ray filaments for medical imaging devices in use by healthcare providers across the world. Today our filaments are part of imaging systems at the forefront of digital CT scanning technology. X-ray filaments are typically single helix cylindrical coils. Leg formations, coil diameters, wire diameters, numbers of turns, and turn spacing can all be modified to adapt with the next stage cathode assembly. Flat emitters and coils with flat sides are also possible. Typical material types include tungsten and 3% rhenium tungsten.