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Proceedings Paper

Monitoring combat wound healing by IR hyperspectral imaging
Author(s): Chris R. Howle; Abigail M. Spear; Ehsan Gazi; Nicole J. Crane
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Paper Abstract

In recent conflicts, battlefield injuries consist largely of extensive soft injuries from blasts and high energy projectiles, including gunshot wounds. Repair of these large, traumatic wounds requires aggressive surgical treatment, including multiple surgical debridements to remove devitalised tissue and to reduce bacterial load. Identifying those patients with wound complications, such as infection and impaired healing, could greatly assist health care teams in providing the most appropriate and personalised care for combat casualties.

Candidate technologies to enable this benefit include the fusion of imaging and optical spectroscopy to enable rapid identification of key markers. Hence, a novel system based on IR negative contrast imaging (NCI) is presented that employs an optical parametric oscillator (OPO) source comprising a periodically-poled LiNbO3 (PPLN) crystal. The crystal operates in the shortwave and midwave IR spectral regions (ca. 1.5 – 1.9 μm and 2.4 – 3.8 μm, respectively). Wavelength tuning is achieved by translating the crystal within the pump beam. System size and complexity are minimised by the use of single element detectors and the intracavity OPO design. Images are composed by raster scanning the monochromatic beam over the scene of interest; the reflection and/or absorption of the incident radiation by target materials and their surrounding environment provide a method for spatial location. Initial results using the NCI system to characterise wound biopsies are presented here.

Paper Details

Date Published: 7 March 2016
PDF: 11 pages
Proc. SPIE 9703, Optical Biopsy XIV: Toward Real-Time Spectroscopic Imaging and Diagnosis, 97031E (7 March 2016); doi: 10.1117/12.2213330
Show Author Affiliations
Chris R. Howle, Defence Science and Technology Lab. (United Kingdom)
Abigail M. Spear, Defence Science and Technology Lab. (United Kingdom)
Ehsan Gazi, Defence Science and Technology Lab. (United Kingdom)
Nicole J. Crane, Naval Medical Research Ctr. (United States)
Uniformed Services Univ. of Health Sciences (United States)


Published in SPIE Proceedings Vol. 9703:
Optical Biopsy XIV: Toward Real-Time Spectroscopic Imaging and Diagnosis
Robert R. Alfano; Stavros G. Demos, Editor(s)

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