What is the Difference Between Closed & Open MRI Machines?

Recently updated

MRI technology has changed the game! Healthcare providers can now diagnose and monitor many medical conditions without the need for any invasive procedures. It does this thanks to the powerhouse combination of radio waves and a strong magnetic field! 

However, there are now, of course, many different types of medical imaging equipment available. So, choosing an MRI machine is not always easy.

The first decision you must make is whether to opt for a closed or open MRI machine. So, what’s the difference? And, which one is right for you?

Closed MRI Machines: Traditional and Powerful

Closed-bore machines, the traditional design familiar to many, feature a long, narrow tube into which a patient slides. The standard bore size is approximately 60cm, although newer models may offer a slightly larger diameter of up to 70cm. These machines generally operate at higher magnetic field strengths, commonly around 1.5T and 3.0T (Teslas), which allows for more detailed images.

Advantages of Closed MRI

• Higher image quality - The image clarity and detail is impressive. You’ll need this when diagnosing complex conditions.
• Faster scan times - Rapid speed? ✔️- No problem! This can reduce overall procedure time quite considerably. 

Challenges with Closed MRI

Claustrophobia and discomfort - The bore’s enclosed nature can result in anxiety and discomfort. This is especially the case for claustrophobic patients.
Size limitations - Larger patients may find it difficult or even impossible to fit into these machines.
Noise - These machines are pretty loud, which only adds to patient stress.

Open MRI Machines: Patient-Friendly Design

In contrast to the enclosed tube of the closed MRI, open medical imaging equipment is designed with space and comfort in mind. 

This medical equipment does not completely enclose the patient. The design significantly reduces the feeling of being confined, making the MRI experience less intimidating.

Benefits of Open MRI

Reduced claustrophobia - The open aspect is particularly beneficial for patients who struggle with anxiety and/or claustrophobia. 

Accommodates more patients - This type of machine is better for larger patients.

Patient interaction - Open designs allow for better communication with medical staff while having a the scan.

Drawbacks of Open MRI

·          Lower image quality - Open MRIs typically have lower field strengths. This can affect the detail and clarity of images.

·          Longer scan times - To compensate for the lower field strength, scans may take longer.

Understanding the Key Differences Between Closed and Open MRIs

Here’s a detailed table comparison to help you:

Making the Right Choice for Your Needs

Your final decision comes down to three main factors:

·          Patient Demographics 

Do your patients generally have high levels of anxiety? Maybe they include individuals with larger body types? If so, an open MRI may be more suitable.

·          Diagnostic Requirements 

Closed MRI machines are preferable for conditions that require the highest image quality, such as certain neurological disorders.

·          Operational Efficiency

Closed MRIs offer quicker scans, which can be a significant advantage in medical settings that see a large volume of patients.

Choosing Between Closed & Open MRIs

So, which machine is right for your practice? Does high-quality imaging matter the most? Or, do you want the machine that’s going to make your patients as comfortable as possible? There’s no right or wrong answer. It’s all about figuring out what matters the most to you!