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- Within tissue, photons interact with biological matter via various processes, which can be broadly categorized into scattering and absorption (Fig. 1a and Box 1). Scattering can alter the propagation path, polarization and spectrum of scattered light. The states of the scattered light can be analysed and mapped for diagnosis and imaging.
pmc.ncbi.nlm.nih.gov/articles/PMC5476943/
The use of light in medicine is an extension of light’s evolutionary role in biology. Color perception is mediated by the absorption of light by three types of cones (blue, green and red, with respective wavelengths of 400–450 nm, 500–570 nm and 610–750 nm).
- Visible Light Part I. Properties and Cutaneous Effects of ...
Photons from visible light are absorbed by photoreceptive...
- Visible Light Part I. Properties and Cutaneous Effects of ...
After introducing the physical parameterization of light in terms of standard units, three concepts of light are introduced: light as a wave, light as a quantum particle, and light as a quantum field.
- Richard Haglund
- richard.haglund@vanderbilt.edu
Sep 22, 2021 · Light, as an electromagnetic wave, possesses several fundamental properties, which include intensity, wavelength, phase and polarisation 1, 2 (see Fig. 1a). While the former three are scalar...
- Chao He, Honghui He, Jintao Chang, Binguo Chen, Hui Ma, Martin J. Booth
- 2021
The optical properties of a tissue affect both diagnostic and therapeutic applications of light. The ability of light to penetrate a tissue, interrogate the tissue components, then escape the tissue for detection is key to diagnostic applications.
- 2MB
- 26
Photons from visible light are absorbed by photoreceptive chromophores (e.g., melanin, heme, and opsins), altering skin function by activating and imparting energy to chromophores. Additionally, visible light can penetrate the full thickness of the skin and induce pigmentation and erythema.
Sep 1, 2013 · Once a diagnosis is made and a laser is chosen as a treatment tool, a basic knowledge and understanding of the physics and properties of light/tissue interaction is essential to allow practitioners to provide their patients with optimal results. laser, light, basics, parameters, wavelengths. Topic: lasers. physics. diagnosis. wavelength.
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The purpose of this paper is to bring a broader understanding to the physiology of light metabolism in the human body and to present novel techniques of utilizing light diagnostically and therapeutically.
