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A 3 T sodium and proton composite array breast coil.

Joshua D Kaggie1, J Rock Hadley, James Badal

  • 1Department of Radiology, Utah Center for Advanced Imaging Research, University of Utah, Salt Lake City, Utah, USA; Department of Physics, University of Utah, Salt Lake City, Utah, USA.

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A new sodium phased array coil significantly improves sodium breast MRI quality at 3 Tesla, offering 2-5x better signal-to-noise ratio for sodium imaging. This advancement enables unprecedented image detail in practical scan times.

Keywords:
RF coilbreast cancerdecouplingmetabolic imagingphased arraysodium

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Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Biomedical Engineering
  • Radiology

Background:

  • Sodium MRI offers unique insights into tissue physiology.
  • Improving sodium MRI signal-to-noise ratio (SNR) at 3 Tesla is challenging.
  • Existing coil designs may limit sodium imaging performance.

Purpose of the Study:

  • To evaluate a novel composite phased array coil for 3 Tesla (3T) breast MRI.
  • To determine if the new coil improves sodium imaging capabilities.
  • To assess the quality of proton images acquired with the sodium phased array.

Main Methods:

  • A novel 7-channel sodium receive array and 4-channel proton transceive array composite coil was designed and tested.
  • The composite coil was compared against a standard single-loop dual-resonant coil.
  • Key design features include smaller sodium loops, novel decoupling techniques, and intersecting proton coil elements.

Main Results:

  • The composite array coil achieved a 2-5x improvement in SNR for sodium imaging.
  • Proton imaging SNR remained comparable to the conventional coil.
  • The new design effectively reduced coupling between proton and sodium elements.

Conclusions:

  • The developed composite phased array coil significantly enhances sodium breast MRI quality at 3T.
  • Unprecedented image quality is achievable with this coil in reasonable scan times.
  • This technology holds promise for improved breast cancer detection and characterization.