Light transport model of frequency domain in a n-layered mismatched tissue

2007 ◽  
Author(s):  
X. C. Wang ◽  
Guangzhen Wang ◽  
Xuehui Zhang
Keyword(s):  
Frequency Domain ◽  
Transport Model ◽  
Light Transport

scholarly journals Synthetic Photoplethysmography (PPG) of the radial artery through parallelized Monte Carlo and its correlation to Body Mass Index (BMI)

2020 ◽  
Author(s):  
Tananant Boonya-ananta ◽  
Andres J. Rodriguez ◽  
Ajmal Ajmal ◽  
Vinh Nguyen Du Le ◽  
Anders K. Hansen ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Body Mass Index ◽  
Monte Carlo ◽  
Body Mass ◽  
Radial Artery ◽  
Transport Model ◽  
The United States ◽  
Light Transport ◽  
Signal Ratio ◽  
Experimental Stage

ABSTRACTCardiovascular disease is one of the leading causes of death in the United States and obesity significantly increases the risk of cardiovascular disease. The measurement of blood pressure (BP) is critical in monitoring and managing cardiovascular disease hence new wearable devices are being developed to make the BP metric mode accessible to physicians and patients. Several wearables utilize photoplethysmography from the wrist vasculature to derive BP assessment although many of these devices are still at the experimental stage. With the ultimate goal of supporting instrument development, we have developed a model the photoplethysmographic waveform derived from the radial artery at the volar surface of the wrist. To do so we have utilized the relation between vessel biomechanics through Finite Element Method and Monte Carlo light transport model. The model shows similar features to that seen in PPG waveform captured using an off the shelf device. We observe the influence of body mass index (BMI) on the PPG signal. A degradation the PPG signal of up to 40% in AC to DC signal ratio was thus observed.

scholarly journals Phasor field waves: A Huygens-like light transport model for non-line-of-sight imaging applications

2019 ◽  
Vol 27 (20) ◽  
pp. 29380 ◽  
Author(s):  
Syed Azer Reza ◽  
Marco La Manna ◽  
Sebastian Bauer ◽  
Andreas Velten
Keyword(s):  
Transport Model ◽  
Light Transport ◽  
Line Of Sight ◽  
Non Line Of Sight

Application of Hybrid Light Transport Model in Forward Problems of Multispectral Cerenkov Luminescence Tomography

2018 ◽  
Vol 47 (11) ◽  
pp. 1111001
Author(s):  
任青云 REN Qing-yun ◽  
侯榆青 HOU Yu-qing ◽  
贺小伟 HE Xiao-wei ◽  
王琳 WANG Lin ◽  
易黄建 YI Huang-jian ◽  
...  
Keyword(s):  
Transport Model ◽  
Light Transport ◽  
Forward Problems

scholarly journals SPLITSnow: A spectral light transport model for snow

2021 ◽  
Vol 255 ◽  
pp. 112272
Author(s):  
Petri M. Varsa ◽  
Gladimir V.G. Baranoski ◽  
Bradley W. Kimmel
Keyword(s):  
Transport Model ◽  
Light Transport
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