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Influence of pulse waves on the transmission of near-infrared radiation in outer-head tissue layers |
Jerzy PLUCIŃSKI1(), Andrzej FRYDRYCHOWSKI2 |
1. Department of Metrology and Optoelectronics, Faculty of Electronics, Telecommunication and Informatics, Gdańsk University of Technology, ul. G. Narutowcza 11/12, 80-233 Gdańsk, Poland 2. Department of Human Physiology, Faculty of Health Sciences with Subfaculty of Nursing and Institute of Maritime and Tropical Medicine, Medical University of Gdańsk, ul. Tuwima 15, 80-210 Gdańsk, Poland |
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Abstract In this study, we investigate the effect of pulse waves on the transmission of near-infrared radiation in the outer tissue layers of the human head. This effect is important in using optical radiation to monitor brain conditions based on measuring the transmission changes in the near-infrared radiation between the source and the detector, placed on the surface of the scalp. This is because the signal related to the changes in the width of the subarachnoid space (SAS) due to the pulse wave is modified. These latter changes can be used, for instance, in detecting cerebral edema and in evaluating cerebral oxygenation. The research was performed by modeling the propagation of near-infrared radiation in the tissue layers using a Monte-Carlo method. The main objective of this study was to assess the extent to which the changes in the transmission of near-infrared radiation correspond to the changes in the optical parameters of the tissues of the head and in the width of the subarachnoid layer.
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Keywords
infrared radiation
transmission
human head
tissue
Monte-Carlo method
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Corresponding Author(s):
Jerzy PLUCIŃSKI
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Just Accepted Date: 18 July 2017
Online First Date: 23 August 2017
Issue Date: 26 September 2017
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