How to Choose a Mobile C-Arm X-Ray Machine: 10-Point Checklist

Start with the clinical profile

List the procedures you will perform and their weekly numbers. Mark which are demanding: obese patients, hip and pelvis, spine, vascular, long cases. The most demanding procedure on the list sets the minimum specification; the average one only sets the typical workload. Think five to ten years ahead about whether spine, 3D or vascular work will be added.

If you are not sure what a mobile C-arm is capable of, read what is a C-arm machine and types of C-arm machines before writing the specification.

Detector and image quality

Choose between an image intensifier and a flat panel, then the size. Flat panels give a distortion-free image and a wide dynamic range; typical sizes are 9 or 12 inch, or 21 × 21 and 30 × 30 cm. A larger field shows more anatomy and may cut the number of shots. The PLX C1320/1321 offers an optional large dynamic flat panel that doubles the imaging area and an optional IGZO panel for finer detail.

Judge image quality on real cases and at low dose settings, not only in a brochure. Compare in more detail in flat panel vs intensifier.

Generator, tube and heat

Generator power determines how well the unit penetrates large patients and how fast it can acquire. Ratings range from a few kilowatts for light surgery to 25 kW for demanding work: the Arcovis DRF comes with 5, 20 or 25 kW generators, and the PLX C7100 offers up to 25 kW. Focal spot size affects sharpness, and heat capacity affects whether you can run continuously.

Ask for the tube's heat storage and cooling rate in writing, and for the longest continuous run at the frame rate you will use.

• Generator power and focal spot sizes
• Tube heat capacity and cooling
• Detector type, size and frame rate
• Pulse rates and automatic exposure control

Software and workflow

Check which functions are standard: metal artefact suppression, long-bone stitching, DSA and road mapping, last-image hold, annotations, DICOM and PACS. The user interface should be easy to learn; touch panels, one-click startup and position memory shorten set-up time. Make sure that the software licences are explicit in the quotation.

Test the workflow with your own staff: how many steps from switch-on to first image, how images are saved, how patient data are entered and how easy it is to recover from an error.

Mechanics, footprint and safety

Examine the movements of the arm: vertical lift, orbital rotation, angulation, horizontal travel and, if relevant, motorisation. A wide throat helps the lateral view of the hip. Measure the unit and its monitor cart against your doors, lifts and storage place. Check weight and wheel control for manoeuvring in a crowded OR.

Dose tools matter: pulsed fluoroscopy, collimation, laser positioning and dose-area-product display. The PLX C1320/1321 has laser positioning on tube and flat panel and a DAP dose display. For protection see C-arm radiation safety.

Mistakes to avoid

Do not write the specification around one model, because it narrows competition and may lock in features you do not need. Do not accept a quotation that omits software licences, accessories, drapes, lead protection or training. Do not forget to test the unit in your own room, including doors, lifts and the path from the parking place to the table.

Finally, involve the people who will use the machine. Surgeons, radiographers and OR nurses notice usability problems that a specification sheet hides: a pedal that is hard to find, a monitor that glares or an arm that fights the table.

Service, documents and total cost

Ask the supplier about installation, acceptance testing, operator training, preventive maintenance, response time, spare parts stock and a loan unit. Request the user and service manuals, the electrical safety and registration documents for the exact model, and confirm UAE requirements with the relevant authority (MOHAP, DHA or DOH, depending on the emirate).

Compare offers on total cost of ownership rather than the headline figure; see C-arm machine price for what to include. For a shortlist matched to your department, request a consultation from Beckfinity's specialists via the contact page.