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. 2020 May 15;20(10):2815. doi: 10.3390/s20102815
DOT Diffuse Optical Tomography
fMRI functional Magnetic Resonance Imaging
PET Positron Emission Tomography
CW Continuous–Wave
TD Time–Domain
TCSPC Time–Correlated Single-Photon Counting
PMT Photomultiplier Tube
SPAD Single-Photon Avalanche Diode
SiPM Silicon Photomultiplier
VOA Variable Optical Attenuator
DM Dichroic Mirror
TDC Time-to-Digital Converter
LV-TTL Low-Voltage Transistor-Transistor Logic
EEG Electroencephalography
DTOF Distribution of photons time-of-flight
SNR Signal-to-Noise Ratio