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Related Concept Videos

Brain Imaging01:14

Brain Imaging

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.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).

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Exploring Cognitive Functions in Babies, Children & Adults with Near Infrared Spectroscopy
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A portable instrument for high-speed brain function imaging: FEITER.

Hugh McCann1, S Talha Ahsan, John L Davidson

  • 1School of Electrical and Electronic Engineering, University of Manchester, Manchester, UK. h.mccann@manchester.ac.uk

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|January 19, 2012
PubMed
Summary

A new Electrical Impedance Tomography (EIT) system, fEITER, enables functional brain imaging using scalp electrodes. This advanced technology offers high-speed, low-noise data acquisition for human subject trials.

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Area of Science:

  • Biomedical Engineering
  • Neuroimaging
  • Electrical Engineering

Background:

  • Electrical Impedance Tomography (EIT) offers deep physiological data but faces sensitivity challenges for head imaging.
  • Existing EIT systems require improvements for effective functional brain imaging.

Purpose of the Study:

  • To introduce fEITER, a novel system for functional brain imaging using EIT.
  • To integrate scalp-mounted electrodes and evoked response stimulation for enhanced brain activity detection.
  • To leverage Field-Programmable Gate Array (FPGA) technology for flexible current excitation and signal processing.

Main Methods:

  • Development and implementation of the fEITER system.
  • Utilization of scalp-mounted electrodes for EIT measurements.
  • Integration of FPGA technology for advanced control and processing.
  • Operation at 100 frames per second with 1 μV root-mean-square (rms) voltage noise.

Main Results:

  • Demonstration of fEITER's capability for functional brain imaging.
  • Presentation of example data from human subjects.
  • Achieved high frame rate (100 fps) and low noise levels (1 μV rms).

Conclusions:

  • The fEITER system successfully enables functional brain imaging using EIT.
  • The system's design offers flexibility and high performance for neuroimaging applications.
  • Clinical trials authorized by the UK MHRA indicate readiness for broader application.