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A home-built digital optical MRI console using high-speed serial links.

Weinan Tang1,2,3, Weimin Wang1,2,4, Wentao Liu1,2

  • 1Center for MRI Research, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, People's Republic of China.

Magnetic Resonance in Medicine
|August 9, 2014
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Summary

A new digital optical console for magnetic resonance imaging (MRI) was developed, offering high performance and cost-effectiveness for multichannel imaging. This innovation enhances both research and clinical MRI applications.

Keywords:
MRI consoledigital optical interconnectionhigh-speed serial linkmultichannelsystem interconnect

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Area of Science:

  • Medical Imaging
  • Electrical Engineering
  • Biomedical Engineering

Background:

  • Conventional MRI consoles face limitations in performance and scalability.
  • Developing cost-effective, high-performance MRI systems is crucial for advancing imaging research and clinical applications.

Purpose of the Study:

  • To engineer a high-performance, cost-effective digital optical console for scalable multichannel MRI.
  • To replace the traditional analog radio frequency (RF) chain with digital RF manipulation.

Main Methods:

  • Implemented a modular architecture with distributed pulse sequencers and high-speed serial links for efficient system interconnection.
  • Utilized digital optical links for transmitting MR signals from acquisition electronics near RF coils and preamplifiers.
  • Achieved a temporal resolution of 1 μs for RF and gradient operations.

Main Results:

  • Constructed a prototype console with a broad frequency range (DC to 100 MHz).
  • Digitized MR signals in the scanner room (16-24 bit dynamic range) and transmitted them via a 3.125 Gbps duplex optic fiber.
  • Acquired high-quality phantom and human images on 0.36T and 1.5T clinical MRI scanners.

Conclusions:

  • Developed a novel, high-speed serial interconnected digital optical MRI console.
  • The console is suitable for both advanced imaging research and routine clinical applications.
  • This system offers improved performance and cost-effectiveness for multichannel MRI.