[Low-field magnetic resonance imaging : Just less expensive or completely different?]

Area of Science:

• Medical Imaging
• Biophysics

Background:

• Magnetic Resonance Imaging (MRI) field strength has historically increased.
• Recent advancements in "dry" superconductive magnets have spurred renewed interest in low-field MRI.

Purpose of the Study:

• To demonstrate that the resurgence of low-field MRI is technologically driven, not solely by economics.
• To highlight the diagnostic adequacy and efficiency of modern low-field MRI systems.
• To explore new applications and inherent advantages of low-field MRI.

Main Methods:

• Integration of improved gradient and radiofrequency systems.
• Application of advanced algorithms, including artificial intelligence (AI).
• Utilizing robust sampling methods like spiral MRI.

Main Results:

• Low-field MRI achieves diagnostic adequacy without compromising patient throughput or efficiency.
• Low-field MRI offers advantages for imaging the lung, metallic implants, and interventional procedures.
• Existing interventional devices are compatible with low-field MRI, often without modification.

Conclusions:

• Low-field MRI is a technologically advanced, cost-efficient solution.
• It possesses the potential to expand the applications of MRI.
• Modern low-field MRI represents a significant leap beyond previous iterations.