Digital lock-in detection system based on single photon counting for near-infrared functional brain imaging

Author(s):  
Wei Meng ◽  
Hui Guo ◽  
Ming Liu ◽  
Xi Yi ◽  
Linhui Wu ◽  
...  

2011 ◽  
Author(s):  
A. Tosi ◽  
A. Bahgat Shehata ◽  
A. Della Frera ◽  
A. Dalla Mora ◽  
S. Tisa ◽  
...  


Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2815
Author(s):  
David Orive-Miguel ◽  
Laura Di Sieno ◽  
Anurag Behera ◽  
Edoardo Ferocino ◽  
Davide Contini ◽  
...  

Near-infrared diffuse optical tomography is a non-invasive photonics-based imaging technology suited to functional brain imaging applications. Recent developments have proved that it is possible to build a compact time-domain diffuse optical tomography system based on silicon photomultipliers (SiPM) detectors. The system presented in this paper was equipped with the same eight SiPM probe-hosted detectors, but was upgraded with six injection fibers to shine the sample at several points. Moreover, an automatic switch was included enabling a complete measurement to be performed in less than one second. Further, the system was provided with a dual-wavelength (670 n m and 820 n m ) light source to quantify the oxy- and deoxy-hemoglobin concentration evolution in the tissue. This novel system was challenged against a solid phantom experiment, and two in-vivo tests, namely arm occlusion and motor cortex brain activation. The results show that the tomographic system makes it possible to follow the evolution of brain activation over time with a 1 s -resolution.



Author(s):  
Liantuan Xiao ◽  
Xiaobo Wang ◽  
Guofeng Zhang ◽  
Suotang Ji




1996 ◽  
Vol 67 (11) ◽  
pp. 3984-3989 ◽  
Author(s):  
Benjamin L. Legendre ◽  
Daryl C. Williams ◽  
Steven A. Soper ◽  
Rainer Erdmann ◽  
Uwe Ortmann ◽  
...  


2007 ◽  
Vol 26 (4) ◽  
pp. 38-46 ◽  
Author(s):  
Meltem Izzetoglu ◽  
Scott C. Bunce ◽  
Kurtulus Izzetoglu ◽  
Banu Onaral ◽  
and Kambiz Pourrezaei




2016 ◽  
Vol 45 (11) ◽  
pp. 1117001
Author(s):  
赵会娟 ZHAO Hui-juan ◽  
戚彩霞 QI Cai-xia ◽  
刘明 LIU Ming ◽  
秦转萍 QIN Zhuan-ping ◽  
张耀 ZHANG Yao ◽  
...  


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