A mobile C-arm must preserve X-ray source-to-receptor geometry while allowing controlled movement around a procedure area. Imaging assemblies, mechanical supports, brakes, locks, encoders, counterbalance, cables, displays, computers, and cart interfaces work as one mobile fluoroscopy system.

Key takeaways

  • The tube and receptor remain mechanically aligned across the C-frame.
  • Orbital, angular, vertical, horizontal, steering, and braking assemblies have different service boundaries.
  • Detector type, generator rating, mechanical generation, software, and cart option affect parts compatibility.

01

Source and receptor assemblies

The X-ray tube housing, high-voltage connections, cooling, filtration, collimator, covers, and mounting occupy one side of the C-frame. The opposite side supports an image intensifier or flat-panel detector, acquisition electronics, shielding, covers, and sometimes anti-scatter or positioning accessories.

02

Positioning and counterbalance

Orbital rotation, angulation, horizontal travel, vertical lift, swivel, steering, and wheel movement use bearings, rails, chains, belts, cables, counterweights, springs, motors, gearboxes, actuators, handles, and structures depending on the design. Wear or imbalance can change usability without stopping image acquisition.

03

Brakes, locks, sensors, and cabling

Mechanical or powered brakes, lock handles, switches, encoders, limit sensors, collision features, cable tracks, flex harnesses, and strain reliefs communicate position and hold geometry. A brake complaint can involve adjustment, wear, a sensor, power, linkage, controller, or structural alignment.

04

Identity and system verification

Record system model and serial number, detector technology, generator rating, C-frame generation, mechanical option, monitor cart, software, assembly part number, revision, connector, mounting points, and calibration relationship. Replacement can require mechanical inspection, alignment, motion, brake, collision, image-quality, radiation-output, and dose-control checks.

Safety boundary

C-arms combine ionizing radiation, lethal voltage, heavy mobile structures, powered motion, brakes, and pinch points. Only authorized personnel should service or test them under controlled radiation and mechanical-safety procedures.

Related terminology

Terms with a published definition link directly to the glossary.