April 7, 2026 | Terry Smith Top 10 things to consider when specifying an X-ray compatible patient trolley for your imaging department In imaging, “X-ray compatible” is often treated as a tick box. In reality, the design choices beneath the mattress platform can directly affect image quality, workflow efficiency, patient safety, and avoidable repeat exposures. When specifying a patient trolley for use in X-ray, CT, or hybrid imaging environments, these are the ten areas that deserve close attention, and the questions every imaging department should be asking suppliers. 1. Is there a full-length X-ray tunnel or just a cassette holder? Not all X-ray compatible trolleys are designed to the same standard. Some offer little more than a fixed cassette holder intended for basic chest imaging. Others provide a true full-length X-ray tunnel, allowing imaging from head to toe without repositioning the patient. Why it matters Full-length tunnels support trauma imaging, lower limb studies, and complex positioning. This is particularly important in emergency, orthopaedic, and CT settings. Key question Is the tunnel genuinely full length, or primarily designed for chest X-rays? 2. Can the cassette move freely, both longitudinally and laterally? A full-length tunnel only adds value if the cassette can be positioned exactly where the anatomy requires. Some systems allow movement along the length of the trolley but restrict lateral positioning. This can make extended limbs, off-centre anatomy, or oblique views difficult or impossible. Best practice Free longitudinal movement Free lateral movement No fixed channels dictating cassette position Red flag Any system where the cassette must adapt to the trolley rather than the patient anatomy. 3. Is the X-ray tunnel flat or profiled, and does it matter? Some tunnels are moulded or profiled for structural or aesthetic reasons. The issue is that profiles can obstruct cassette movement, catch edges, or introduce inconsistency in positioning. Flat profile tunnels offer: Predictable cassette travel Faster positioning Reduced risk of repeat imaging due to misalignment If a profiled tunnel is used, it should be demonstrably smooth and proven not to interfere with cassette movement. 4. What imaging profiles is the trolley actually designed for? Suppliers should be clear about the intended use. Is the trolley designed for: Chest X-ray only Trauma imaging Lower limb and extended extremity work Cross-table lateral imaging CT transfers A trolley designed primarily for ward transport may technically be X-ray compatible, but still be poorly suited to real imaging workflows. 5. How has artefact reduction at joints been addressed? Backrest hinges and kneebrake joints are common sources of artefact, particularly at lower exposure levels. Key considerations include: Are metal components present across the imaging plane? Do joints overlap common imaging zones? Has testing been carried out across different kVp and mAs ranges? A well-designed trolley minimises structural interruptions in key anatomical areas. 6. Is the mattress helping or hurting image quality? Mattresses are often overlooked during specification. Common problems include mattresses that are: Castellated, creating density variation artefacts Too soft, allowing uneven anatomy positioning Too thick, increasing object to detector distance Ideal mattress characteristics Uniform density Radiolucent materials Firm enough to maintain anatomy position Designed specifically for imaging, not just comfort 7. Has the trolley been linked to avoidable imaging incidents? This is an uncomfortable but important question to ask. Have there been: CQC observations Internal trust incident reports Repeat exposure issues linked to trolley design While suppliers may not volunteer this information, experienced manufacturers should be able to demonstrate established use in imaging environments without recurring issues. 8. Are cassette placement aids available, and are they practical? Some manufacturers offer cassette placement devices or positioning aids. When well designed, these can: Reduce staff strain Improve positioning accuracy Speed up trauma workflows When poorly designed, they can: Obstruct lateral imaging Introduce artefacts Reduce flexibility Ask to see them used in real clinical scenarios, not just product literature. 9. Has lateral and AP imaging been properly considered? True imaging compatibility requires unobstructed AP and lateral views. Check for: Side rails, frames, or actuators intruding into the beam Structural elements that only become problematic during lateral imaging Adequate clearance for cross-table lateral imaging without modifying the trolley If lateral imaging relies on workarounds, the trolley is not doing its job. 10. Does the height range align with CT scanner beds? Finally, consider transfer height compatibility. If the trolley cannot align closely with the CT scanner bed heights: Manual handling risk increases Transfer times slow Patient safety is compromised Look for smooth, controlled height adjustment that aligns comfortably with modern CT table ranges. Final thought An X-ray compatible trolley should support imaging, not work against it. Decisions made at the procurement stage are felt every day by radiographers in image quality, repeat rates, patient comfort, and workflow efficiency. Asking the right questions early helps avoid expensive compromises later. Contact our team today. 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