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Description (A) Db estimates in 4% Intralipid phantom (0.8% lipid) at source‐detector fiber separations of 6 to 25 mm. Mean and SD over 100 repetitions at a measurement time of 32.8 ms. (B) SNR vs τ for the...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description Illustration of speckle pattern on detector pixels. The speckle pattern has been obtained by spatially filtering random noise (randn and filtfilt, MatLab, Mathworks)
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description Db measured on the volar forearm during the blood occlusion test using a source‐detector fiber separation of 5 mm and a fiber‐SPAD distance of 11 mm (mean values over 10 repetitions in each time...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description Experimental setup with variable source‐detector fiber separation and detector fiber‐SPAD (single photon avalanche diode) distance. The fiber‐SPAD distance was varied with a stack of SM1 tubes. The...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description (A) Impact of the contiguous repetition length on signal‐to‐noise ratio (SNR). The square root of the repetition length normalized with the SNR for g2 at the longest repetition length is plotted...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description Sketch of typical fiber configurations and light trajectories for laser Doppler flowmetry (LDF) and diffuse correlation spectroscopy (DCS). In LDF, the light scattered through the tissue is...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description Db from changing temperature with measurements using the 200 μm fiber at 4.6 mm source‐detector fiber separation. (A) Examples of fits to g2 at a measurement time of 16.4 ms (2.5 mm fiber‐SPAD...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description Photon detection efficiency (PDE) of the single photon avalanche diode detector as a function of wavelength measured at three different excess bias voltages. Note that the PDE at 780 nm (the...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description (A) Values for β when changing fiber‐detector separation. It can be noted that maximizing these values do not correspond to optimal signal‐to‐noise ratio as can be seen when comparing with Figure ....
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description (A) Fitted Db when changing fiber‐SPAD separation. Error bars correspond to mean and SD over 100 sets of 16.4 ms measurements. (B) The stability of the Db estimates tended to increase with...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description Variation of fiber parameters
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description Signal‐to‐noise ratio (SNR) for 60 ms measurements when changing fiber‐detector distance for (A) Set 1, (B) Set 2 and (C) Set 3. Averaging g2 from four pixels (red curves) approximately doubles the...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics -
Description (A) Average light intensity on the detector pixels when changing fiber‐detector distance. By itself, higher light intensity is expected to give higher signal‐to‐noise ratio (SNR). However, higher...
Article Title: A multipixel diffuse correlation spectroscopy system based on a single photon avalanche diode array
Publication Title: Journal of Biophotonics