Skip to content
Patient guidance

MRI safety starts before scan day.

MRI does not use ionising radiation, but it does use a strong magnetic field. That is why accurate safety screening is an essential part of the imaging pathway.

Safety screening

Why the questions matter

The team needs to know about implanted devices, metal, previous surgery and other factors that may affect whether or how an MRI can be performed.

The team needs to know about implanted devices, metal, previous surgery and other factors that may affect whether or how an MRI can be performed.

01

Give the exact implant/device details when available.

02

Do not remove or stop medication unless specifically instructed.

03

Contact the clinic if you are unsure how to answer a safety question.

Metal & devices

Bring information, not assumptions

Some devices may be compatible with MRI under specific conditions, while others require extra checks. The clinic needs the model or documentation where relevant rather than a guess about whether something is safe.

Some devices may be compatible with MRI under specific conditions, while others require extra checks. The clinic needs the model or documentation where relevant rather than a guess about whether something is safe.

01

Pacemakers or implanted cardiac devices

02

Neurostimulators, pumps or implanted electronics

03

Surgical clips, stents or other implants

04

Metal fragments or occupational metal exposure

Pregnancy & health history

Raise important information early

If you are pregnant, may be pregnant, or have a health issue that could affect the planned scan, tell the clinic before the appointment so it can follow its approved clinical policy.

If you are pregnant, may be pregnant, or have a health issue that could affect the planned scan, tell the clinic before the appointment so it can follow its approved clinical policy.

01

Possible or confirmed pregnancy

02

Recent surgery

03

Previous reactions or concerns if contrast is being considered

04

Severe pain or mobility limitations that may affect positioning

Questions

Useful things to clarify before attending.

MRI uses magnetic fields and radiofrequency energy rather than ionising radiation. The strong magnetic environment is the reason detailed safety screening is required.
Tell the clinic the exact implant/device name and bring any manufacturer or implant card information available. Compatibility can depend on the specific device and scanning conditions.
Metallic and electronic items generally need to stay outside the MRI scan room. Follow the clinic’s instructions about jewellery, watches, cards, hearing devices and clothing.
Contact the imaging team before the appointment rather than guessing. They can tell you what information or further checks are needed.