# Open MRI vs Closed MRI: Machine Types, Trade-Offs, and Who Benefits

Closed MRI machines have strong magnets and produce the highest-quality images. Open MRI machines are less confining and accommodate larger bodies, but image quality and exam time may differ.

Updated 2026-10-10. Also on the [web page](https://mriprices.fyi/guides/open-mri-vs-closed-mri).

# Open MRI vs Closed MRI: Machine Types, Trade-Offs, and Who Benefits

Not all MRI machines are the same. The two main designs — closed and open — use different magnet configurations that affect image quality, scan time, patient comfort, and exam cost. Knowing the difference helps you understand what your imaging center offers and why.

## How closed MRI works

A closed MRI machine is a large cylinder with a powerful magnet inside. The patient lies on a table that slides into the center of the tube. Because the magnets are arranged in a full ring around the body, they produce a very strong and uniform magnetic field. This allows closed machines to generate high-resolution images in a shorter scan time.

Most hospital and imaging center MRIs are closed machines. They are the standard for nearly all diagnostic purposes, including scans of the brain, spine, joints, and internal organs.

- Typical magnetic field strength: 1.5 Tesla or 3.0 Tesla
- Higher field strength means better image clarity and shorter scan times
- The tunnel opening is usually about 60 to 70 centimeters in diameter

## How open MRI works

An open MRI machine uses two flat magnets positioned above and below the patient, or a C-shaped design that leaves the sides open. The patient is not enclosed in a tunnel. This design provides more space and can feel much less confining.

- Magnetic field strength is often lower, typically 0.2 to 1.2 Tesla
- Lower field strength may mean longer scan times and somewhat less detailed images
- The open sides make it more comfortable for patients who feel claustrophobic

Some newer open MRI machines approach the image quality of closed systems, but the gap has not fully closed in all exam types.

## Who benefits from open MRI

Open MRI is especially helpful for:

- Patients with claustrophobia or anxiety about tight spaces
- Larger patients who cannot fit into a standard closed machine
- Patients who need to be scanned in a non-standard position
- Children who are more comfortable in an open environment
- Scans of arms, legs, or other extremities that can be positioned more naturally

## Wide-bore MRI as a middle option

Wide-bore MRI machines are a variation of the closed design with a larger tunnel opening. They offer more room than a standard closed machine while retaining most of the image quality advantages. Wide-bore machines are becoming more common and may be a good alternative for patients who find standard closed machines too tight but do not need a fully open design.

## When open or closed matters for pricing

The price of an MRI is influenced partly by the machine type. Open MRI machines are less common and may have a higher per-scan cost because they are slower. However, the price difference is not consistent across all markets. Some facilities charge the same regardless of machine type. When comparing quotes, ask whether the price assumes a closed machine, an open machine, or a wide-bore machine — and whether the choice affects the total.

## Questions for your imaging center

- What type of MRI machine do you use for this exam?
- If I need an open machine to feel comfortable, is that available at this location?
- Does the quoted price change depending on which machine is used?
- How long will the scan take on the machine you plan to use?
- Do you have a wide-bore option as an alternative?

## Questions

### Which type of MRI is better — open or closed?

For image quality, closed MRI is generally better because its stronger magnetic field produces clearer, faster scans. Open MRI is better for patient comfort, anxiety, and body size accommodation. The right choice depends on your medical needs and the body part being scanned.

### Can a closed MRI accommodate larger patients?

Most closed MRI machines have weight and width limits. If you exceed those limits, you may not be able to use a standard closed machine. Open MRI and wide-bore machines offer alternatives for patients who need more space.

### Does an open MRI cost more than a closed MRI?

Pricing varies by location and facility. Open MRI may cost more in some markets because there are fewer machines and the scans take longer, but the difference is not universal. Always compare quotes for the exact exam type you need.