Development of a low-cost point of care device for near-infrared spectroscopy (NIRS) based online imaging during non-invasive electrical brain stimulation
Abstract
All of us are exposed to optical (i.e., visible and near-infrared) radiation from the sun and other
sources throughout our lives. Assuming our eyes are shielded from excessive intensity, and our
skin is protected from the ultraviolet content of sunlight, we accept this exposure in the
knowledge that it is perfectly safe. Unlike x-rays, optical photons are insufficiently energetic to
produce ionisation, and unless light is concentrated to such a high degree that it causes burning
to the skin, optical radiation offers no significant hazard. The diagnostic potential of optical
methods has been widely known since Jöbsis [1] first demonstrated that transmittance
measurements of near-infrared (NIR) radiation could be used to monitor the degree of
oxygenation of certain metabolites. This led to the development and increasingly widespread use
of clinical near-infrared spectroscopy (NIRS), which offers a safe, non-invasive means of
monitoring cerebral function at the bedside without the use of radioisotopes or other contrast
agents [2].
Origin : Files produced by the author(s)
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