HYBRID C-ARM AND MOBILE X-RAY IN ONE The lightest in its class – at just 549 lbs. FDR Cross is more than 150 lbs. lighter than typical compact c-arms. Its highly maneuverable and ergonomic design allows ease of positioning for all essential procedures. The added ability to offset the tube from the detector housing allows wireless x-ray imaging comparable to that of a conventional portable x-ray system.