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Proceedings Paper

Hyperspectral imaging of bruised skin
Author(s): Lise L. Randeberg; Ivar Baarstad; Trond Løke; Peter Kaspersen; Lars O. Svaasand
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Paper Abstract

Bruises can be important evidence in legal medicine, for example in cases of child abuse. Optical techniques can be used to discriminate and quantify the chromophores present in bruised skin, and thereby aid dating of an injury. However, spectroscopic techniques provide only average chromophore concentrations for the sampled volume, and contain little information about the spatial chromophore distribution in the bruise. Hyperspectral imaging combines the power of imaging and spectroscopy, and can provide both spectroscopic and spatial information. In this study a hyperspectral imaging system developed by Norsk Elektro Optikk AS was used to measure the temporal development of bruised skin in a human volunteer. The bruises were inflicted by paintball bullets. The wavelength ranges used were 400 - 1000 nm (VNIR) and 900 - 1700 nm (SWIR), and the spectral sampling intervals were 3.7 and 5 nm, respectively. Preliminary results show good spatial discrimination of the bruised areas compared to normal skin. Development of a white spot can be seen in the central zone of the bruises. This central white zone was found to resemble the shape of the object hitting the skin, and is believed to develop in areas where the impact caused vessel damage. These results show that hyperspectral imaging is a promising technique to evaluate the temporal and spatial development of bruises on human skin.

Paper Details

Date Published: 22 February 2006
PDF: 11 pages
Proc. SPIE 6078, Photonic Therapeutics and Diagnostics II, 60780O (22 February 2006); doi: 10.1117/12.646557
Show Author Affiliations
Lise L. Randeberg, Norwegian Univ. of Science and Technology (Norway)
Ivar Baarstad, Norsk Elektro Optikk AS (Norway)
Trond Løke, Norsk Elektro Optikk AS (Norway)
Peter Kaspersen, Norsk Elektro Optikk AS (Norway)
Lars O. Svaasand, Norwegian Univ. of Science and Technology (Norway)


Published in SPIE Proceedings Vol. 6078:
Photonic Therapeutics and Diagnostics II
Kenton W. Gregory; Guillermo J. Tearney; Nikiforos Kollias; Haishan Zeng; Bernard Choi; Reza S. Malek; Michael D. Lucroy; Lloyd P. Tate; Henry Hirschberg; Steen J. Madsen; Brian Jet-Fei Wong; Justus F. R. Ilgner; Eugene A. Trowers; Werner T.W. de Riese, Editor(s)

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