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Related Concept Videos

Brain Imaging01:14

Brain Imaging

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
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Functional Neuroimaging Using Ultrasonic Blood-brain Barrier Disruption and Manganese-enhanced MRI
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Feasibility Study of Enhancing Microwave Brain Imaging Using Metamaterials.

Eleonora Razzicchia1, Ioannis Sotiriou1, Helena Cano-Garcia2

  • 1Faculty of Natural and Mathematical Sciences, King's College London, Strand, London WC2R 2LS, UK.

Sensors (Basel, Switzerland)
|December 18, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a novel metamaterial (MM) design to improve microwave brain imaging. The MM enhances signal penetration and detection for better brain hemorrhage monitoring.

Keywords:
brain imagingcross-shaped split-ring resonators (CS-SRRs)metamaterialmetasurfacemicrowave imaging (MWI)microwave tomography (MWT)split-ring resonators (SRRs)

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Area of Science:

  • Electromagnetics and Applied Physics
  • Biomedical Engineering
  • Materials Science

Background:

  • Microwave brain imaging offers a safe, non-ionizing alternative for neuroimaging.
  • Current limitations include poor signal penetration and detection sensitivity.
  • Metamaterials (MMs) show potential for enhancing electromagnetic wave interactions.

Purpose of the Study:

  • To develop and evaluate a novel metamaterial (MM) planar design for enhanced microwave brain imaging.
  • To assess the MM's performance as an impedance-matching layer and signal enhancer.
  • To investigate the MM's utility in detecting simulated brain hemorrhages.

Main Methods:

  • Design and fabrication of a cross-shaped split-ring resonator (SRR-CS) metamaterial (MM).
  • Experimental and simulation (CST Microwave Studio®) analysis of MM interaction with electromagnetic waves.
  • Testing the MM in contact with skin tissue and integrated into a headband scanner setup.
  • Evaluation of signal penetration and detection of a blood-like dielectric target.

Main Results:

  • The MM acts as an effective impedance-matching layer, enhancing transmitted signal penetration into a human head model.
  • The MM significantly improves the detection of weak signals, increasing the signal difference from a simulated hemorrhage.
  • The MM demonstrated improved performance compared to a scenario without metamaterials.

Conclusions:

  • The proposed MM film, based on SRR-CS, is a promising hardware advancement for microwave brain imaging.
  • This technology can potentially lead to improved scanners for brain hemorrhage detection and monitoring.
  • Metamaterial-enhanced microwave imaging offers a pathway to safer and more sensitive neuroimaging techniques.