Simple, low-cost multipurpose RF coil for MR microscopy at 9.4 T

Area of Science:

• Physics
• Biomedical Engineering
• Radiology

Background:

• High-field magnetic resonance imaging (MRI) at 9.4 T offers enhanced signal-to-noise ratio and spectral resolution.
• Specialized radiofrequency (RF) coil designs are crucial for optimal performance in high-field MRI systems.
• Existing RF coil technologies may have limitations in flexibility and applicability for diverse imaging scenarios.

Purpose of the Study:

• To introduce and evaluate a novel inductively coupled RF coil for high-resolution MRI at 9.4 T.
• To demonstrate the coil's adaptability for both implantable and surface coil applications.
• To address and provide solutions for implementation challenges associated with high-field RF coil operation.

Main Methods:

• Design and implementation of an inductively coupled RF coil optimized for 9.4 T operation.
• Testing the coil in both implantable (for local imaging) and surface coil configurations.
• Acquisition of high-resolution MR images from biological samples (rat spinal cord, mouse spine and brain).

Main Results:

• The developed RF coil successfully operated at 9.4 T, enabling high-resolution imaging.
• Demonstrated versatility through successful imaging of rat spinal cord (implanted) and mouse spine/brain (surface coil).
• Practical solutions were identified and offered for implementation challenges at strong magnetic fields.

Conclusions:

• The inductively coupled RF coil is a versatile and effective tool for high-resolution MRI at 9.4 T.
• The coil's design facilitates both implantable and surface applications, expanding imaging possibilities.
• This work provides valuable insights into overcoming technical hurdles for high-field RF coil development and application.