MRI machines aren’t one-size-fits-all, and for many patients, that matters more than they realize. If you’ve ever felt anxious, claustrophobic, or wondered if a machine can accommodate your size or condition, you’re not alone.
Feeling anxious about whether you’ll fit? You’re not alone. In our experience at Glen Rose Medical Center, concerns about size and comfort are among the most frequently asked questions we receive.
Whether you’re a referring physician, technologist, or patient, a comprehensive understanding of MRI machine dimensions such as bore size, weight capacity, and room requirements is crucial. This knowledge can guide better decisions and significantly improve outcomes.
At Glen Rose Medical Center, we’ve meticulously designed our radiology suite with one primary goal in mind: to prioritize patient comfort and accessibility. Here’s what you need to know before your following scan.
What Are the Standard MRI Machine Dimensions?
MRI machines vary by type (conventional, wide bore, open), but most fall within these general specs:
| MRI Type | Bore Diameter | Table Width | Machine Length | Room Size |
|---|---|---|---|---|
| Conventional | 60 cm (23.6 in) | 50–60 cm | 150–200 in | 300–500 sq ft |
| Wide Bore | 70 cm (27.5 in) | 60–70 cm | 180–220 in | 500+ sq ft |
| Open MRI | Varies | Varies | Compact | 250–350 sq ft |
Key Takeaway: Bore diameter and table width matter most for patients with claustrophobia, larger body types, or limited mobility.
Real-World MRI Models & Their Capacity
| Model | Bore Size | Weight Limit | Field Strength | Best For |
|---|---|---|---|---|
| Siemens MAGNETOM Aera | 70 cm | 550 lbs | 1.5T | Bariatric & general imaging |
| GE SIGNA Voyager | 70 cm | 500 lbs | 1.5T | For large patients, full-body scans |
| Philips Ingenia Edition | 70 cm | 550+ lbs | 3.0T | Neurological, MSK, cardiac |
Understanding specs is easier when you can see how major MRI models compare. Below are three examples of widely used machines:
Key Takeaway: Not all 70 cm systems are created equal. Table strength, field strength, and gantry design influence comfort and diagnostic precision.
MRI Weight Capacity: How Much Can They Hold?
Not all machines can accommodate every patient. Here’s a breakdown of MRI weight limits:
* Standard MRI systems: Up to 350–400 lbs
* Wide bore systems: Up to 550 lbs
* Bariatric-capable models: Up to 660+ lbs (300 kg)
These specs vary by manufacturer and model. Always check the gantry specifications for your facility’s equipment.
Key Takeaway: Patients over 400 lbs should confirm with their provider that the system supports high-capacity imaging.
What Is a Gantry and Why Does It Matter?
The gantry is the housing around the bore. For patients, its design affects positioning, noise, and scan comfort.
Key dimensions:
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- Bore width: 60–70 cm
- Scan length: 125–150 cm
- Table travel range: 190–230 cm
Key Takeaway: A wider gantry helps reduce anxiety, facilitates easier monitoring, and supports a broader range of scan types, particularly for examinations involving the shoulders, spine, and sedated patients.
Does Machine Size Affect Image Quality?
Not if the system is built for diagnostic performance.
Here’s what matters more than size:
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- Field strength (Tesla): 1.5T or 3.0T ensures sharp, fast imaging
- System generation: Newer wide bore machines match or outperform older conventional ones
- Use case: Open MRI (0.3–0.7T) may lower resolution but helps with extreme anxiety
🔗 External Reference: U.S. FDA — MRI Safety Guidelines
Key Takeaway: Wide bore systems offer the comfort of a bigger space without sacrificing clarity.
Who Benefits Most from Larger MRI Machines?
Larger MRI machines, especially wide bore or open MRI models, offer more than just physical space. They improve comfort, reduce anxiety, and expand eligibility for patients who might otherwise be turned away. Patients Who Benefit Most:
-
- Plus-size patients: Safer, more comfortable, higher weight limits
- Elderly patients: Easier positioning, better access
- Claustrophobic individuals: Wider bores reduce the “trapped” feeling
- Children & sedated patients: More space for comfort and observation
Even if the imaging outcome is technically the same, a patient’s comfort level has a direct impact on the quality of the scan. Roomier machines often result in fewer motion artifacts and higher patient compliance.
Key Takeaway: Larger machines enable providers to serve more patients with reduced stress and improved compliance.
Patient Story: Comfort Made All the Difference
“I thought I’d have to go to Dallas. Glen Rose got me in the same day—and I fit in the machine without feeling panicked. It changed everything.”
One recent patient had been turned away from another facility due to weight limits. Thanks to our 70 cm wide bore system and 550-lb reinforced table, we completed their scan comfortably in a single visit.
Key Takeaway: Technical specs are about more than engineering—they affect real people’s access to care.
Planning the MRI Room: Space and Design Requirements
Installing an MRI isn’t just about the machine. Facilities need to plan for the following:
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- Room size: Most MRI rooms require 350–500 square feet
- Shielding: RF shielding, magnetic field zoning, and acoustic protection
- Cooling systems: Especially for high-powered (3T+) machines
- Patient accessibility: Entryways, ramps, and lift availability
For example, Glen Rose Medical Center’s radiology suite was designed with accessibility and comfort in mind, offering high-capacity scanning and wide bore options.
External Reference: American College of Radiology (ACR) MRI Facility Guidelines
At Glen Rose, our MRI suite is not just a room with a machine. It’s designed for you to provide easy access, low-anxiety experiences, and rapid patient turnaround, as your comfort and safety are our top priorities.
Key Takeaway: Room design has a significant impact on both patient experience and safety. Larger machines require more extensive planning.
FAQs About MRI Machine Dimensions
What is the size of a typical MRI machine?
Most machines are 150–200 inches long with bore diameters ranging from 60 to 70 cm.
Is there an MRI machine for obese patients?
Yes. Wide bore and bariatric-capable MRI systems can accommodate up to 660 lbs and offer more internal space.
What is the MRI machine weight limit?
Standard MRIs handle 350–400 lbs. Bariatric models support up to 660 lbs or more.
Does Glen Rose Medical Center have a wide bore MRI?
Yes. See our Radiology Services for more information.
Do larger MRI machines affect image quality?
No. In most modern systems, wider bores still produce high-resolution images with no compromise in quality—especially at 1.5T or 3 T magnetic field strengths.
Are all wide bore MRI machines the same size?
Not quite. Most have 70 cm bores, but table length, weight limits, and gantry design can vary by manufacturer.
Is an open MRI better for patients with anxiety?
It depends. Open MRIs offer more visibility and space, which helps reduce anxiety. However, some open MRIs may have lower magnetic strength, so it’s best to balance comfort with the diagnostic need.
Final Takeaway: Choose an MRI That Fits You
Summary: What MRI Machine Dimensions Mean for You
Whether you’re choosing a provider or outfitting a facility, here’s what matters most:
- Bore size affects comfort and eligibility
- Weight limits vary—not all machines accommodate bariatric patients
- Room and gantry design impact workflow and safety
- Field strength and equipment quality ensure image clarity
📍 Glen Rose Medical Center offers advanced MRI systems that meet the needs of a wide range of patients—including those needing extra room or reassurance.
📞 Schedule Your MRI in Glen Rose
Do you need a wide-bore MRI? Don’t delay your diagnosis due to concerns about size. Our wide bore MRI accommodates patients up to 550 lbs – book your scan today.
Call us today at (254) 897-2215
Related Articles
→ Wide Bore MRI at Glen Rose Medical Center: Comfortable Imaging Without Claustrophobia
→ Wide Bore MRI vs. Open MRI: Complete Guide for Anxious Patients
About the Author: The Glen Rose Imaging Team
The Glen Rose Imaging Team comprises board-certified radiologists and experienced technologists who specialize in advanced diagnostic imaging, including wide bore and bariatric MRI. With decades of combined experience, our team proudly serves patients from Glen Rose, Granbury, Stephenville, and nearby communities.
We’re committed to delivering accurate results in a compassionate, low-stress environment. Whether you have concerns about weight limits or claustrophobia or want to know what to expect, we take the time to walk you through every step. Learn more about our imaging services and meet our team at glenrosemedicalcenter.com