A direct modulated optical link for MRI RF receive coil interconnection.

Area of Science:

• Medical Imaging
• Optical Engineering
• Biomedical Engineering

Background:

• Traditional coaxial cables in MRI RF receive coils suffer from crosstalk and electromagnetic interference.
• Interconnections between multiple MRI channels require robust solutions to maintain signal integrity.
• Optical fiber offers a potential solution to overcome limitations of conventional cabling.

Purpose of the Study:

• To propose and evaluate a direct modulated optical link for MRI RF receive coil interconnection.
• To assess the performance of the optical link in terms of power gain, frequency response, and dynamic range.
• To demonstrate the feasibility of using optical links for MRI imaging by comparing image quality with traditional coaxial cables.

Main Methods:

• A direct modulated optical link was designed and implemented for MRI coil interconnections.
• Key performance metrics including power gain, frequency response, and dynamic range were measured.
• Phantom and in vivo human head imaging were conducted using the optical link connected to a 0.3T MRI scanner.

Main Results:

• The direct modulated optical link was successfully implemented and tested.
• Performance measurements confirmed the viability of the optical link for MRI applications.
• MRI images acquired using the optical link showed comparable quality to those obtained with coaxial cables.
• The system was demonstrated on a 0.3T MRI scanner and showed potential for extension to 1.5T systems.

Conclusions:

• The direct modulated optical link is a feasible alternative to coaxial cables for MRI RF receive coil interconnections.
• This optical solution minimizes crosstalk and electromagnetic interference, enhancing signal quality.
• The technology can be integrated into existing MRI scanners with minor modifications and is scalable for multi-channel arrays at higher field strengths.