Why all jewellery, even stainless steel, has to come off before an MRI

Why all jewelry must be removed before an MRI, including stainless steel. In short: All jewelry must be removed before an MRI, including pieces made of stainless steel, gold, or titanium. The magnetic field can move magnetizable metals, all conductive metals can heat up, and metal in the imaging area creates artifacts that render the findings useless. The practice's instructions apply without exception.

Status: September 2026. By Phil Oberlaender, Corelune Jewellery, Düsseldorf.

For X-rays, jewelry is only a concern if it is located in the area being scanned. The situation is different for an MRI because it operates with a very strong and constantly active magnetic field, often at 1.5 or 3 Tesla.

This regularly leads to discussions at reception because people have read that their stainless steel is not magnetic. This is usually true, but it does not change the instructions, and for two further reasons.

What actually happens in the magnetic field

Magnetizable metals are attracted and can move. This concerns ferritic steels, iron, and some alloys. The force is small for a tiny earring, but can become significant for larger pieces.

The second point concerns all conductive metals, including non-magnetic ones: the radiated radio waves can induce currents in closed metal loops, and these generate heat. A chain is exactly such a loop.

The third reason is the most common

Metal in the imaging area creates artifacts, i.e., disturbances and extinctions in the image. They affect an area around the metal, not just the spot itself. That is exactly where the finding on which everything depends may lie.

In practice, this is the reason why scans have to be repeated. This costs time in the machine, a new appointment, and, in case of doubt, a delayed diagnosis.

What this means for individual materials

So, even non-magnetic metals stay off. You can find out whether your piece reacts to a magnet with the test from the article Is stainless steel jewelry magnetic. The result does not change anything for the examination.

How to prepare practically

Remove chains, rings, bracelets, and earrings at home if you know an MRI is coming up. Practices rarely have secure storage, and an ear stud in a paper cup is quickly lost. This also includes hair clips, piercings, and watches.

Do not bring anything you absolutely need. If you arrive without jewelry, you save yourself the question of where to put things during the exam.

Piercings, implants, and anything that doesn't come off

Anything that cannot be removed belongs in the consultation, not in an internet search. The practice team will then decide if and how the examination is possible. For some piercings, there are plastic replacement studs; the practice will clarify if this fits in individual cases.

The same applies to implants, braces, and tattoos with metal-containing pigments. The question is routine and asked at every appointment; it is no cause for concern.

If the ring won't come off

This is not a rare case and no reason to panic. Cool your hand, because cold makes the tissue shrink. Apply some soap or hand cream. Pull the ring off with a twisting motion rather than pulling straight, and keep your hand raised so there is less blood in the finger.

If that doesn't work, the practice will help you; they have tools for it. Anyone who doesn't want to buy a ring that is tight in the first place should measure in the evening and choose the larger size in case of doubt. Adjustable models can be found under adjustable rings.

Difference from CT, X-ray, and ultrasound

With CT and X-rays, it is not about magnetism, but about shadows in the image. Jewelry in the imaging area is removed; jewelry far away from it can usually stay. A ring does not interfere with a chest X-ray.

With ultrasound, jewelry practically does not matter unless it lies exactly on the examined area. Only with MRI does the blanket rule apply to everything on the body.

Afterward: Putting jewelry back on and checking briefly

After the examination, nothing happens to the jewelry; it was outside the field. Nevertheless, it is worth a quick look at the clasp, as jewelry is bent more often when removed and stored quickly than when worn.

A carabiner that can be opened with very little force is the classic harbinger of a lost pendant. More on this in why chains break.

Material, dimensions, and prices at a glance

Showering, swimming, and sports do not harm stainless steel; it does not tarnish. For reference, the values from the Corelune range.

Frequently Asked Questions

May I keep stainless steel jewelry on during an MRI?

No. Even though austenitic stainless steel is barely magnetic, it can heat up due to the radiated radio waves and interfere with the image. The practice's instruction applies to all metals equally, regardless of what is on the product label.

What about braces, implants, and piercings?

Anything not removable belongs in the consultation before the examination. The practice team decides if the scan is possible as is or needs to be adjusted. Plastic replacements for piercings are a solution in some cases, but the practice clarifies that.

Must jewelry also be removed for CT or X-rays?

That is about shadows in the image, not magnetism. Jewelry in the imaging area is removed; jewelry outside usually stays. This distinction does not apply to MRI; there, everything comes off, regardless of the body region examined.

Can the magnetic field damage my jewelry?

This is not to be expected with stainless steel, gold, and silver. Watches with mechanical movements can be influenced by strong fields, which is why they also stay off. However, the practical reason for removing them is not the protection of the jewelry, but safety and image quality.

Where do I leave my jewelry during the examination?

Best at home. If that is not possible, ask for a lockable compartment. Loose storage in the changing area is the most common place where small pieces go missing, usually because they slip into a crack and no one misses them until it is too late.

Covered in detail: the three mechanisms of action in the magnetic field, material overview, preparation, piercings and implants, as well as the difference from CT and X-rays.

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About the author

Phil Oberlaender runs Corelune Jewellery in Düsseldorf and has been working with stainless steel jewelry daily since 2024: quality inspections, complaints, daily wear tests. The information in this article comes from our own product range and from customer feedback. Where Corelune does not offer something, it is stated as such.

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