Reliable scattering coefficient estimation against absorption inhomogeneity by time-resolved measurement of backscattered light

Author(s):  
Takeshi Namita ◽  
Masayuki Kawashima ◽  
Yuji Kato ◽  
Koichi Shiniizu
1995 ◽  
Author(s):  
Yoshio Tsunazawa ◽  
Ichiro Oda ◽  
Hideo Eda ◽  
Michinosuke Takada

2021 ◽  
Vol 27 (11) ◽  
pp. 890-896
Author(s):  
Won Young Chung ◽  
Sun Young Kim ◽  
Chan Gook Park ◽  
Chang Ho Kang

2019 ◽  
Vol 20 (9) ◽  
pp. 2214 ◽  
Author(s):  
Shinsuke Nirengi ◽  
Sayuri Fuse ◽  
Shiho Amagasa ◽  
Toshiyuki Homma ◽  
Ryotaro Kime ◽  
...  

Brown adipose tissue (BAT) may potentially be used in strategies for preventing lifestyle-related diseases. We examine evidence that near-infrared time-resolved spectroscopy (NIRTRS) is capable of estimating human BAT density (BAT-d). The parameters examined in this study are total hemoglobin [total-Hb]sup, oxygenated Hb [oxy-Hb]sup, deoxygenated Hb [deoxy-Hb]sup, Hb O2 saturation (StO2sup), and the reduced scattering coefficient in the supraclavicular region (μs’sup), where BAT deposits can be located; corresponding parameters in the control deltoid region are obtained as controls. Among the NIRTRS parameters, [total-Hb]sup and [oxy-Hb]sup show region-specific increases in winter, compared to summer. Further, [total-Hb]sup and [oxy-Hb]sup are correlated with cold-induced thermogenesis in the supraclavicular region. We conclude that NIRTRS-determined [total-Hb]sup and [oxy-Hb]sup are useful parameters for evaluating BAT-d in a simple, rapid, non-invasive manner.


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