MRI is the imaging modality where the site determines the purchase more than in any other. The magnet’s field imposes constraints on the room, the surrounding spaces and the building’s contents, and the cryogenic system imposes requirements on services, access and ongoing supply. A used MRI system can be a sound acquisition and an unbuildable project at the same time, and the difference is established by surveying the site rather than by assessing the scanner. This guide sets out what a sourcing exercise has to produce, who owns each step, and the sequence that establishes viability before commitment.

What This Process Has to Produce

The output is a documented position on whether the system can be installed and sustained at the intended site, together with the condition and support position of the equipment itself. That means four results: the system’s configuration and support status, the magnet and cryogen position, a site assessment covering the field constraints and services, and a costed view of what would be required to complete the installation.

The fourth result is what converts an assessment into a decision. A used system whose installation requires shielding, structural work and service upgrades presents a different proposition from one that fits an existing room, and the difference is established before purchase rather than during the project. The extractable summary is this: MRI sourcing has to establish the system’s configuration and support position, the magnet and cryogen position, whether the intended site can accept the field and the services required, and what completing the installation would involve.

A second characteristic of MRI sourcing is that the project and the purchase cannot be evaluated separately. The same system can be viable at one site and unviable at another, and the difference lies in the building rather than in the scanner. That is why the two analyses run together, and why a purchase decision taken without the site assessment is a decision taken on incomplete information.

Who Owns Each Step

The technical owner is whoever can assess the system and interpret its cryogen history, which typically means a service organisation with MRI experience. The buyer owns the site assessment, because the buyer controls the location and the building, and owns the decision about what the system must be capable of.

The siting question frequently involves parties the buyer may not have considered: the building’s owner if the site is leased, other occupants if the field extends beyond the imaging room, and whoever controls the delivery route if the magnet must be moved through the building or over a structure. Establishing who must be consulted is part of the assessment, because a constraint discovered after purchase is a project cost rather than a negotiating position.

The Sequence and Its Dependencies

The sequence begins with the intended use and the site, and the two are assessed together rather than in turn.

1. Define what the system must be capable of and where it will be installed. 2. Establish the system’s model, configuration and support position. 3. Assess the magnet and cryogen state, including the cryogen history and the requirements for continued operation. 4. Survey the site against the installation requirements, covering the field’s implications for surrounding areas. 5. Establish the services the system requires, including power, cooling and the environment. 6. Establish the delivery route and access, including structural and access constraints. 7. Work up a costed installation scope and identify what remains uncertain. 8. Verify the system against the manufacturer’s documentation, and price any gaps before agreeing terms.

The dependency most often broken is the fourth step. Where the field’s implications for surrounding spaces are considered only within the imaging room, the project discovers later that areas the field reaches have to be addressed, and by then the room design may already be fixed.

Documents Generated Along the Way

The document set has to answer both the equipment question and the project question, and the two are distinct.

Where the Process Usually Breaks

Six failures account for most disappointing MRI projects, and each is visible before commitment.

• The system is assessed and the site is assumed, so viability is established after the purchase rather than before it.
• The field’s implications for surrounding areas are considered only within the imaging room, leaving adjacent spaces unaddressed.
• The cryogen position is inferred from the system’s age rather than from its operating history.
• Delivery access is assumed from the building’s entrances rather than assessed for the magnet’s requirements.
• The support position is assumed from the model’s reputation rather than confirmed for this configuration and version.
• The installation cost is treated as a separate project, so the total cost of the acquisition is not established before commitment.

Two further failures are worth naming. The first is assuming that the field’s implications are confined to the imaging room, when adjacent spaces and the building’s contents are part of the same assessment. The second is treating the delivery route as a logistics matter, when the magnet’s movement can determine whether the project is possible at all.

Where the equipment will be subject to device-side expectations in the market concerned, those are illustrated in one market by the MHRA guidance on regulating medical devices, and cross-market expectations around equipment and safe use are summarised by the WHO medical devices programme.

Handling Exceptions and Partial Failures

Exceptions in MRI sourcing are structural rather than technical, and the response is to decide whether they are acceptable before purchase. Where the site requires modification, the cost and lead time belong in the acquisition decision, because they determine whether the project can complete at all.

Where the cryogen history is incomplete, the practical position is to treat the system’s ongoing requirement as a running cost with an uncertain pattern, and to price it accordingly rather than to assume a favourable case. Where the delivery route presents an unresolved constraint, the project should not proceed to purchase until it is resolved, because the magnet’s movement is not a detail that can be worked out later. Where the system will be used in a clinical role, its suitability remains a matter for the department’s clinical and technical assessment, and any measurement supporting a verification conclusion should be made with a traceable instrument.

What to Record for Audit and Resale

The sourcing record supports the project, the acceptance and any future sale. For a system as site-dependent as MRI, the installation record is part of the equipment record, because a later move will require the same analysis and cannot be reconstructed from drawings alone.

Keep the configuration record, the support position, the cryogen assessment, the site survey, the delivery assessment, the costed scope and the verification results together under the system identifier. Record the basis of each conclusion rather than only its outcome, because a later reader needs to know what was assumed. Where the installation involved deviations from the manufacturer’s guidance, record them with the reasoning, since they affect both the system’s position and any future relocation. Buyers who want the wider context can start from the knowledge hub, see how equipment and its condition are described on the marketplace store, or use the imaging material in the industry hub. Our guide to rigging, access and site delivery planning covers the movement and access analysis an MRI installation requires. The professional framework for servicing is covered by AAMI’s medical device servicing material, independent guidance from organisations such as ECRI is a useful reference on equipment risk, and where a verification conclusion rests on measurement, the ILAC accreditation directory allows a provider’s calibration status to be checked.

Part of the Sourcing Medical Equipment by Type guide.