20240036133. METAMATERIAL SLAB FOR MRI simplified abstract (The Governors of the University of Alberta)

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METAMATERIAL SLAB FOR MRI

Organization Name

The Governors of the University of Alberta

Inventor(s)

Adam Maunder of Edmonton (CA)

Nicola De Zanche of Edmonton (CA)

Ashwin Iyer of Edmonton (CA)

METAMATERIAL SLAB FOR MRI - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240036133 titled 'METAMATERIAL SLAB FOR MRI

Simplified Explanation

The abstract describes a metamaterial (MTM) slab that can passively interact with a magnetic resonance imaging (MRI) system to improve the homogeneity, specific absorption rate, and/or strength of the magnetic field generated by a transmit device. The MTM slab can also act as a receiver for the MRI by being connected to RF receive circuitry.

  • The MTM slab consists of a first layer and a second layer, with the second layer offset from the surface defined by the first layer.
  • The first layer and the second layer form a 2D transmission line that supports radio frequency (RF) current along the surface in two directions: a first direction and a second direction transverse to the first direction.
  • The first layer and the second layer are connected via linking capacitors.

Potential applications of this technology:

  • Improved homogeneity of the magnetic field in MRI systems, leading to better image quality and accuracy.
  • Enhanced specific absorption rate (SAR) control, allowing for safer and more efficient MRI scans.
  • Increased strength of the magnetic field, enabling faster imaging and improved signal-to-noise ratio.

Problems solved by this technology:

  • Inhomogeneity of the magnetic field in MRI systems, which can cause image artifacts and inaccuracies.
  • High SAR levels, which can lead to tissue heating and potential patient discomfort or harm.
  • Limited strength of the magnetic field, resulting in longer scan times and reduced image quality.

Benefits of this technology:

  • Improved image quality and accuracy in MRI scans.
  • Safer and more efficient MRI procedures with better SAR control.
  • Faster imaging and higher signal-to-noise ratio for enhanced diagnostic capabilities.


Original Abstract Submitted

a metamaterial (mtm) slab for a magnetic resonance imaging (mri) system passively interacts with a field generated by a transmit device to improve homogeneity of the field, specific absorption rate, and/or strength of the field. the mtm slab may also be connected to rf receive circuitry at one or more ports to act as a receiver for the mri. the mtm slab may comprise a first layer generally defining a surface and a second layer offset from the surface generally defined by the first layer, the first layer and the second layer interacting to form a 2d transmission line supporting radio frequency (rf) current along the surface in a first direction and in a second direction transverse to the first direction, the first layer and the second layer being connected via linking capacitors.

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