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Journal of Biomedical Optics

Study of near infrared technology for intracranial hematoma detection
Author(s): Quan Zhang; Hong Yan Ma; Shoko Nioka; Britton Chance
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Paper Abstract

Although intracranial hematoma detection only requires the continuous wave technique of near infrared spectroscopy (NIRS), previous studies have shown that there are still some problems in obtaining very accurate, reliable hematoma detection. Several of the most important limitations of NIR technology for hematoma detection such as the dynamic range of detection, hair absorption, optical contact, layered structure of the head, and depth of detection are reported in this article. A pulsed light source of variable intensity was designed and studied in order to overcome hair absorption and to increase the dynamic range and depth of detection. An adaptive elastic optical probe was made to improve the optical contact and decrease contact noise. A new microcontroller operated portable hematoma detector was developed. Due to the layered structure of the human head, simulation on a layered medium was analyzed experimentally. Model inhomogeneity tests and animal hematoma tests showed the effectiveness of the improved hematoma detector for intracranial hematoma detection.

Paper Details

Date Published: 1 April 2000
PDF: 8 pages
J. Biomed. Opt. 5(2) doi: 10.1117/1.429988
Published in: Journal of Biomedical Optics Volume 5, Issue 2
Show Author Affiliations
Quan Zhang, MGH (United States)
Hong Yan Ma, Univ. of Pennsylvania (United States)
Shoko Nioka, Univ. of Pennsylvania School of Medicine (United States)
Britton Chance, Univ. of Pennsylvania (United States)


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