An open bore MRI is an MRI scanner with open sides and more space around your body. You lie on a table while a strong magnetic field and radiofrequency signals create internal images. The roomier layout can make the scanner easier to enter and less confining than a conventional cylindrical system.
This guide explains how the machine works, what happens during your scan, and how it differs from a wide-bore closed MRI. It gives you a practical framework for comparing comfort, physical access, safety, image capability, scheduling, and cost.
Open-Bore MRI in Medical Imaging
The layout changes your surroundings, not the underlying imaging method. A scanner still creates cross-sectional images by measuring magnetic signals from hydrogen atoms in your body. Unlike a traditional design, you do not have to enter a long, fully enclosed cylinder.
A conventional scanner resembles a short tunnel. An open system has a roomier platform surrounded on several sides by magnetic equipment. You may see more of the room and gain greater side access as you enter or leave the scanning area.
Your added space affects physical access and your sense of comfort, but it does not determine image quality by itself. The magnet, gradients, coils, body area, positioning, motion, and examination sequence all influence the finished images.
Your required position still depends on the examination. A knee scan may require positioning only your lower leg in the imaging area. A brain or spinal scan may require your head or torso to sit more fully within the magnet, even when the scanner has open sides.
How the Machine Is Built
A scanner’s physical construction determines where you can move, which coils can be placed, and how a technologist can assist you. Two broad magnetic structures commonly face each other above and below the table in a true open configuration.
Open sides and patient space
That opposing arrangement creates space above and beside you while maintaining the magnetic environment needed to collect data. The geometry differs from a cylindrical magnet, but both configurations use controlled magnetic fields and radiofrequency pulses.
A true open system reduces the confined feeling associated with a tunnel scanner. Its extra room may help a technologist assist you onto the table, adjust a coil, or change your position. These features can help when you cannot lie flat comfortably or transfer from a wheelchair.
Movement still stops during image capture. Coils, pads, straps, and other positioning devices limit motion that could blur the scan. Open access does not mean you can move freely while the system collects images.
Related scanner configurations
Labels can conceal important physical differences. A wide-bore MRI usually describes a closed cylindrical scanner with a larger opening than an older model. A true open system provides more surrounding space and less enclosure, so confirm the actual design before scheduling.
Upright MRI uses different geometry and can support selected weight-bearing or seated examinations. An extremity scanner covers only one area, such as your hand, knee, or ankle. You shouldn’t treat these configurations as interchangeable merely because all three rely on magnets.
Product-family names also require a closer look. Siemens Healthineers markets the MAGNETOM family, Philips Healthcare markets Panorama systems, and GE HealthCare markets Optima systems. Confirm the exact model, magnet design, coils, and body area instead of assuming a family name describes every installation.
| Scanner type | Patient position | Main access feature | Common distinction |
|---|---|---|---|
| True open system | Table, seated, or supported position | Open space above and around the body | Reduced enclosure |
| Wide-bore closed system | Usually lying flat | Larger cylindrical entrance | More space, but still a tunnel |
| Upright system | Upright or supported | Vertical scanning space | Distinct magnet arrangement |
| Extremity system | Seated or reclined | Only the examined area enters | Focused body-area imaging |
What Happens During the Scan
Your appointment usually starts with questions about your medical history, implanted devices, previous scans, and ability to remain still. A radiology technologist explains the equipment, helps you onto the table, and positions you before image collection begins.
Your head, torso, or examined limb may need to rest inside the active magnet area. Even with open sides, you may hear loud knocking, ringing, and clicking or feel vibration. A coil or the narrowest part of the scanning area can also create pressure.
- Complete safety screening: Answer questions about implants, foreign objects, prior reactions, pregnancy status, and relevant medical conditions.
- Allow careful positioning: Let the technologist place the appropriate coil and align your body for imaging.
- Follow breathing instructions: Follow directions for shallow breathing or breath holding when the selected sequence requires them.
- Remain motionless during capture: Stay still while the magnet and radiofrequency system collect several image sequences.
- Complete the image series: Allow the technologist to check for movement and incomplete images before the examination ends.
- Await professional interpretation: Wait for a radiologist to interpret the completed study and send the findings to your ordering clinician.
Your scanning room may include an alarm button, communication device, or direct operator observation. Before the scan begins, ask how you’ll receive instructions and how to signal a problem without moving at an unsuitable moment.
Your scanning time depends on the body area, requested sequences, movement, and equipment. A focused joint examination may finish much faster than a study covering several areas. Ask about the complete appointment time rather than image acquisition time alone.
You can also ask whether a local facility routinely performs your examination. Experience with a specific body part can affect positioning, sequence selection, and your chance of completing the study without repeating images.
Those positioning choices can affect your comfort and access, especially if lying still or staying within the scanner feels difficult.
Comfort, Anxiety, and Physical Access
The open layout that distinguishes one scanner from a cylindrical system can also influence your emotional and physical experience. That difference matters most when enclosure, transfer, positioning, or limited contact with staff causes distress.
Reduced feelings of enclosure
Claustrophobia can involve fear of enclosed spaces, panic, sweating, breathlessness, or an intense urge to leave. You may feel less anxious on an open system because you can see more of the room and communicate more easily with the technologist.
Loud noise, unfamiliar equipment, prior trauma, pain, or concern about losing control can still create anxiety. Open sides don’t resolve every trigger, so tell the imaging team about any difficult scan you’ve had before. Your history can help staff plan contact, breaks, and positioning.
Tell the team whether you need to see the room before entry or want an adult companion present when facility rules allow it. A practical communication plan is more useful than assuming the scanner’s appearance will meet every need.
Transfer and positioning support
The wider space may help you turn, roll, or settle onto the table with less twisting. That access can help when you use a mobility device, have a larger body, or cannot lie flat for long. A technologist may also reach an injured shoulder or place a coil more comfortably.
Your access depends on more than nominal scanner width. Table height, lifting systems, clear floor space, transfer paths, and staff assistance affect your experience. A roomy magnet may still be difficult to use if you can’t reach the table or maintain a safe position.
Ask whether the table supports a direct transfer and how a staff-assisted transfer would occur. You should not assume that open sides automatically provide safe lifting clearance for every wheelchair, stretcher, or body shape.
Call the facility before scheduling and describe your mobility limits, body-position needs, and history of anxiety. Ask how the staff handles a scan that must stop before completion.
Your examination may still work best on a closed scanner because of its configuration, bore size, coil support, or established imaging protocol. More than one practical option may be available, and your imaging team can match the system to the body part and level of detail required.
Open MRI vs Closed MRI
Open and closed configurations differ most clearly in enclosure, but neither label identifies the better examination for you. Your body area, required position, movement limits, safety needs, and clinician’s imaging requirements determine the fit.
| Factor | Open MRI machine | Wide-bore closed MRI |
|---|---|---|
| Enclosure | Open or partly open sides | Full cylindrical tunnel |
| Bore width | Space around much of the body | Wider than older closed models, but still enclosed |
| Patient access | Easier side access in many models | Entry through the front of the cylinder |
| Body position | Table or supported access varies by model | Most examinations use a table |
| Anxiety response | May feel less confined | Wide-bore models may feel roomier |
| Imaging capability | Model-dependent | Model-dependent |
| Availability | Limited to selected locations | More commonly found at facilities |
A closed model may provide enough room while retaining a conventional setup. Compare the actual bore diameter instead of relying on a marketing label. A 70-centimeter opening may feel more confined than an 80-centimeter opening, although scanner length and coil position also affect comfort.
Suitable systems can produce comparable image quality, but one label may cover different magnet designs, coils, gradients, and software capabilities. Ask which scanner you’ll receive and whether its team routinely performs your examination on that model.
Your best choice isn’t necessarily the machine with the most surrounding space. You need a system that can examine the required body part safely, limit movement enough for clear images, and accommodate your physical and emotional needs.
That reasoning aligns with MRI safety and facility guidance from the American College of Radiology, which emphasizes standardized screening, trained personnel, and control of the magnetic environment. Configuration alone cannot establish safety or diagnostic suitability.
Safety, Cost, and Choosing a Facility
Once comfort and access narrow your options, safety, price, and scheduling determine whether a scanner is practical. You need accurate device information, a clear estimate, and a facility that can perform the ordered examination.
MRI safety screening
You need careful safety screening for either scanner design. Magnets can attract ferromagnetic items, and magnetic forces may affect certain implants or carried objects. The strong magnetic field remains present even when the scanner appears roomy.
Provide screening information for every implant, including its exact model number. You may need to store phones, smart watches, cards, jewelry, tools, and hearing devices securely. Follow the imaging team’s instructions because facility rules and scan protocols differ.
An open design isn’t automatically safer than a closed system. Both can present projectile hazards, noise exposure, positioning demands, and risks from unsuitable implants. Your safety depends on screening, device compatibility, staff training, object control, and correct operation.
Never treat the common name of an implant as a substitute for its model number. Even devices with similar purposes can have different components, labeling, and MRI conditions, so the facility needs precise records to screen the device correctly.
Cost and scheduling
Your bill depends on location, facility, body area, insurance coverage, and connected services. Contrast material, a specialist consultation, or additional sequences can change the total. Request a written estimate and confirm which services your plan covers.
Fewer facilities offer a true open configuration, so travel or limited scheduling can affect your options. A wide-bore closed model at a closer location may provide the opening you need with a shorter wait. Compare that practical fit before focusing on a scanner label.
Your estimate should separate the examination charge, facility fee, contrast service, and any specialist review. Ask whether additional sequences or repeat scanning could create separate charges, and confirm how your insurer handles the provider and facility portions of the bill.
Your facility checklist
- Confirm the scanner design: Ask whether the system is truly open, upright, or a wide-bore closed cylinder.
- Name the examination area: Give the facility the ordering clinician’s exact examination request.
- Describe your anxiety: Share prior panic, trapped feelings, or your need for frequent contact.
- Discuss movement limits: State your position limits, transfer needs, and whether lying flat is possible.
- Review device safety: List every implant, device, foreign object, and relevant medical condition.
- Clarify imaging needs: Ask whether the scanner and coils provide the detail required for your study.
- Request written costs: Separate scan charges, facility fees, contrast services, and insurance coverage.
- Check model availability: Confirm the actual scanner and whether the facility routinely scans your body area.
Your questions should produce specific answers rather than a general assurance that the machine is open. You need the model, bore or access dimensions, planned position, coil availability, safety process, complete appointment time, and itemized cost.
Bring an updated implant list or device records to your screening call. Exact model numbers help the imaging team check compatibility rather than relying on a device’s common name.
You should compare the response with the practical details that follow: a roomier system is useful only when it can perform your examination safely, fit your body, support the required image quality, and remain accessible within your time and cost constraints.
Bottom Line
Your strongest choice combines adequate physical space with the ability to produce the required images. A true open system may help with access or anxiety, while the model, bore width, coils, protocol, safety requirements, availability, and total cost determine the practical fit.
Confirm the actual design and exact model before you schedule. Give the facility your positioning needs, anxiety history, device records, and examination request so its team can determine whether it can meet your clinical and personal requirements.
FAQ
What is an open bore MRI?
An open bore MRI is an imaging scanner with open sides and more space around your body. It uses a strong magnet and radiofrequency signals to create internal pictures. You may find its layout easier to access and less confining than a conventional scanner.
How does an open MRI differ from a closed MRI?
An open scanner has open or partly open sides and greater side access. A closed scanner surrounds you with a cylindrical tunnel, although a wide-bore model has a larger entrance. Your scan capability depends on the scanner, coils, body area, and protocol.
Can an open MRI help with claustrophobia?
You may find an open scanner less confining because you can see more of the room and communicate more easily with staff. Noise, pain, past trauma, or anxiety can still cause distress. Describe your experience during screening so the team can plan communication and breaks.
Does an open MRI produce the same image quality as a closed MRI?
Suitable systems can produce comparable images for many examinations, but the word “open” doesn’t determine quality. The magnet, gradients, coils, software, body area, positioning, and motion all matter. Ask whether the facility routinely performs your required study with that model.
Is an open MRI safer than a closed MRI?
Neither design is automatically safer. Both use powerful magnets and require screening for implants, carried objects, foreign material, positioning needs, and scan instructions. Exact device compatibility and safe operation matter more than your scanner’s open or closed label.
How much does an open MRI cost?
Your price depends on location, facility, insurance, body area, contrast services, and added examination components. Because availability is limited, compare the written cost, travel needs, and appointment timing. A closer wide-bore scanner may be more practical for your situation.
