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Controlled Cortical Impact Model for Traumatic Brain Injury
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A Wireless Intracranial Brain Deformation Sensing System for Blast-Induced Traumatic Brain Injury.

S Song1,2, N S Race3,4, A Kim1,2

  • 1School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USA.

Scientific Reports
|November 21, 2015
PubMed
Summary

A new wireless sensor system monitors real-time intracranial brain deformation during blast-induced traumatic brain injury (bTBI). This technology aids understanding of bTBI

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Traumatic Brain Injury Research

Background:

  • Blast-induced traumatic brain injury (bTBI) is associated with delayed neurodegenerative and neuropsychiatric disorders.
  • The precise mechanisms linking bTBI to these conditions are not fully understood.
  • Characterizing the initial mechanical forces is crucial for understanding bTBI pathogenesis.

Purpose of the Study:

  • To develop and validate a wireless sensing system for real-time monitoring of intracranial brain deformation during bTBI.
  • To establish mechanistic relationships between blast-induced mechanical events and subsequent neurological sequelae.
  • To investigate the immediate effects of blast waves on brain structure and function.

Main Methods:

  • Development of a wireless sensing system comprising an implantable soft magnet and an external head-mounted magnetic sensor.
  • Measurement of 3D magnetic field changes induced by the relative motion between the magnet and sensor during a blast event.
  • Real-time extraction of temporal and spatial brain motion data with resolutions of 5 μs and 10 μm.
  • Validation of the system followed by measurement of brain deformations in a live rodent model during bTBI.

Main Results:

  • The developed wireless system successfully monitored intracranial brain deformation in real-time during a simulated bTBI event.
  • The system achieved high temporal (5 μs) and spatial (10 μm) resolutions.
  • Brain deformations were successfully measured in a live rodent model, providing critical data on the mechanical impact of blast waves.

Conclusions:

  • The wireless sensing system offers a novel capability for real-time, high-resolution measurement of brain deformation during bTBI.
  • This technology can provide crucial insights into the mechanical underpinnings of bTBI and its associated neurological disorders.
  • Further research using this system can advance our understanding of bTBI pathogenesis and inform the development of protective strategies.