Optimization of Photobiomodulation Dose in Biological Tissue by Adjusting the Focal Point of Lens

The optical power density in biotissue is an important issue for photobiomodulation (PBM) clinical applications. In our previous study, the maximal dose and the power density distributions of 830 nm lasers under human skin could be exactly calculated and measured. In this work, the laser power densi...

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Main Authors: Chuan-Tsung Su, Fu-Chien Chiu, Shih-Hsin Ma, Jih-Huah Wu
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:Photonics
Subjects:
Online Access:https://www.mdpi.com/2304-6732/9/5/350
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author Chuan-Tsung Su
Fu-Chien Chiu
Shih-Hsin Ma
Jih-Huah Wu
author_facet Chuan-Tsung Su
Fu-Chien Chiu
Shih-Hsin Ma
Jih-Huah Wu
author_sort Chuan-Tsung Su
collection DOAJ
description The optical power density in biotissue is an important issue for photobiomodulation (PBM) clinical applications. In our previous study, the maximal dose and the power density distributions of 830 nm lasers under human skin could be exactly calculated and measured. In this work, the laser power density in tissue can be changed by adjusting the focal point of the lens. From the experimental results, it is evident that the power densities on the attached gingiva and the surrounding tissues can be improved. Thus, the dose of a near-infrared (NIR) laser in the target tissue can be increased with a suitable lens. Most importantly, focusing lasers on deeper tissue can avoid any damage to the skin. This study provides a dose optimization method on the target tissue, and the results can be applied to clinical applications, especially laser acupuncture (LA).
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spelling doaj.art-e4b54b61fd0b4e648b276a9488acddf12023-11-23T12:41:13ZengMDPI AGPhotonics2304-67322022-05-019535010.3390/photonics9050350Optimization of Photobiomodulation Dose in Biological Tissue by Adjusting the Focal Point of LensChuan-Tsung Su0Fu-Chien Chiu1Shih-Hsin Ma2Jih-Huah Wu3Department of Healthcare Information and Management, Ming Chuan University, Taoyuan 33348, TaiwanDepartment of Electronic Engineering, Ming Chung University, Taoyuan 33348, TaiwanDepartment of Photonics, Feng Chia University, Taichung 40724, TaiwanDepartment of Biomedical Engineering, Ming Chuan University, Taoyuan 33348, TaiwanThe optical power density in biotissue is an important issue for photobiomodulation (PBM) clinical applications. In our previous study, the maximal dose and the power density distributions of 830 nm lasers under human skin could be exactly calculated and measured. In this work, the laser power density in tissue can be changed by adjusting the focal point of the lens. From the experimental results, it is evident that the power densities on the attached gingiva and the surrounding tissues can be improved. Thus, the dose of a near-infrared (NIR) laser in the target tissue can be increased with a suitable lens. Most importantly, focusing lasers on deeper tissue can avoid any damage to the skin. This study provides a dose optimization method on the target tissue, and the results can be applied to clinical applications, especially laser acupuncture (LA).https://www.mdpi.com/2304-6732/9/5/350photobiomodulationdosenear infrared (NIR)laser acupuncture (LA)
spellingShingle Chuan-Tsung Su
Fu-Chien Chiu
Shih-Hsin Ma
Jih-Huah Wu
Optimization of Photobiomodulation Dose in Biological Tissue by Adjusting the Focal Point of Lens
Photonics
photobiomodulation
dose
near infrared (NIR)
laser acupuncture (LA)
title Optimization of Photobiomodulation Dose in Biological Tissue by Adjusting the Focal Point of Lens
title_full Optimization of Photobiomodulation Dose in Biological Tissue by Adjusting the Focal Point of Lens
title_fullStr Optimization of Photobiomodulation Dose in Biological Tissue by Adjusting the Focal Point of Lens
title_full_unstemmed Optimization of Photobiomodulation Dose in Biological Tissue by Adjusting the Focal Point of Lens
title_short Optimization of Photobiomodulation Dose in Biological Tissue by Adjusting the Focal Point of Lens
title_sort optimization of photobiomodulation dose in biological tissue by adjusting the focal point of lens
topic photobiomodulation
dose
near infrared (NIR)
laser acupuncture (LA)
url https://www.mdpi.com/2304-6732/9/5/350
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AT shihhsinma optimizationofphotobiomodulationdoseinbiologicaltissuebyadjustingthefocalpointoflens
AT jihhuahwu optimizationofphotobiomodulationdoseinbiologicaltissuebyadjustingthefocalpointoflens