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Portable Near Infrared Technology for Detection of Traumatic Brain Injuries in…

Award Information

Agency:
Department of Defense
Branch:
Office of the Secretary of Defense
Award ID:
71924
Program Year/Program:
2004 / SBIR
Agency Tracking Number:
O041-DH4-3012
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
GEOPHEX LTD.
605 Mercury Street Raleigh, NC -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2004
Title: Portable Near Infrared Technology for Detection of Traumatic Brain Injuries in Operational Environments
Agency / Branch: DOD / OSD
Contract: N00014-04-M-0245
Award Amount: $97,981.00
 

Abstract:

Acute head trauma can cause disability and death without prompt diagnosis and treatment. The methods of choice for such diagnosis are x-ray CT or MRI, but these systems are costly and lack portability. Blood has an electrical conductivity and a dielectric permittivity about 50 to 100% higher than that of healthy brain tissue, depending on the excitation frequency. This suggests that an entirely non-contact technique for detecting bleeding in the brain (hematoma) could be based on a magnetic induction measurement that responds to anomalous changes in the conductivity between the skull and dura. One possible design of such a sensor would consist of concentric transmitting and receiving coils in close proximity to the head, but not touching. If the frequency is swept over a suitable range, then a one-dimensional profile of conductivity as a function of depth could be generated by exploiting the electromagnetic skin effect. The advantages of this approach over near-infrared spectroscopy include the non-contact nature of the measurement and the possibility of using a conductivity profile to delineate the dimensions of the hematoma. A conductivity sensor could be designed to be portable, compact and relatively inexpensive. A prototype sensor suitable for testing on tissue phantoms will be developed in Phase I.

Principal Investigator:

Stephen J. Norton
Senior Scientist
9198398515
norton@geophex.com

Business Contact:

Steven Daib
Contract Officer
9198398515
daib@geophex.com
Small Business Information at Submission:

GEOPHEX LTD.
605 Mercury Street Raleigh, NC 27603

EIN/Tax ID: 561378871
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No