Open magnetic resonance imaging (MRI) scanners

Area of Science:

• Medical Imaging
• Radiology

Background:

• Traditional MRI scanners utilize a long cylindrical tube, posing challenges for large patients and those experiencing claustrophobia.
• Open MRI systems, featuring a design with the patient between two plates, address these limitations.
• While widely used, open MRI systems historically offered lower magnetic field strength and image quality compared to closed systems.

Purpose of the Study:

• To evaluate the advancements and applications of open MRI systems in medical imaging.
• To compare the efficacy and patient experience of open MRI versus closed MRI systems.
• To explore the potential of open MRI for interventional procedures.

Main Methods:

• Review of existing literature on open and closed MRI system designs and performance.
• Comparison of image quality, magnetic field strength, and examination times between open and closed MRI systems.
• Analysis of patient comfort and accessibility factors associated with different MRI configurations.

Main Results:

• Early open MRI scanners had limitations in magnetic field strength, image quality, and scan duration.
• Recent advancements have led to newer open MRI systems with higher magnetic field strengths and improved image quality.
• Closed, high-field MRI scanners with wide-bore designs offer enhanced patient comfort and may serve as an alternative to open systems.

Conclusions:

• Open MRI systems provide a viable alternative for patients who cannot tolerate closed MRI scanners.
• Technological improvements are enhancing the performance and applicability of open MRI technology.
• Open MRI systems show promise for intra-operative and image-guided interventions, expanding their clinical utility.