Interferometric diffusing wave spectroscopy imaging with an electronically variable time-of-flight filter

M Zhao, W Zhou, S Aparanji, D Mazumder… - Optica, 2023 - opg.optica.org
Diffuse optics (DO) is a light-based technique used to study the human brain, but it suffers
from low brain specificity. Interferometric diffuse optics (iDO) promises to improve the …

Portable, high speed blood flow measurements enabled by long wavelength, interferometric diffuse correlation spectroscopy (LW-iDCS)

MB Robinson, M Renna, N Ozana, AN Martin, N Otic… - Scientific Reports, 2023 - nature.com
Diffuse correlation spectroscopy (DCS) is an optical technique that can be used to
characterize blood flow in tissue. The measurement of cerebral hemodynamics has arisen …

Time-resolved laser speckle contrast imaging (TR-LSCI) of cerebral blood flow

F Fathi, S Mazdeyasna, D Singh… - IEEE transactions on …, 2024 - ieeexplore.ieee.org
To address many of the deficiencies in optical neuroimaging technologies, such as poor
tempo-spatial resolution, low penetration depth, contact-based measurement, and time …

First-in-clinical application of a time-gated diffuse correlation spectroscopy system at 1064 nm using superconducting nanowire single photon detectors in a neuro …

CS Poon, DS Langri, B Rinehart, TM Rambo… - Biomedical Optics …, 2022 - opg.optica.org
Recently proposed time-gated diffuse correlation spectroscopy (TG-DCS) has significant
advantages compared to conventional continuous wave (CW)-DCS, but it is still in an early …

0.5 billion counts per second enable high speed and penetration in time-domain diffuse optics

L Di Sieno, T Talala, E Avanzi, I Nissinen… - IEEE Journal of …, 2023 - ieeexplore.ieee.org
We present the application to time-domain diffuse optics of a high-speed 8× 256 array of
single-photon avalanche diodes with integrated 256 parallel time-to-digital converters …

Epinephrine iontophoresis attenuates changes in skin blood flow and abolishes cutaneous contamination of near-infrared diffuse correlation spectroscopy estimations …

MF Bartlett, A Palmero-Canton… - American Journal …, 2023 - journals.physiology.org
Near-infrared diffuse correlation spectroscopy (NIR-DCS) is an optical imaging technique for
measuring relative changes in skeletal muscle microvascular perfusion (ie, fold change …

Performance assessment of laser sources for time-domain diffuse correlation spectroscopy

S Samaei, L Colombo, D Borycki… - Biomedical Optics …, 2021 - opg.optica.org
Time-domain diffuse correlation spectroscopy (TD-DCS) is an emerging optical technique
that enables noninvasive measurement of microvascular blood flow with photon path-length …

Impact of cutaneous blood flow on NIR-DCS measures of skeletal muscle blood flow index

MF Bartlett, JD Akins, AP Oneglia… - Journal of Applied …, 2021 - journals.physiology.org
Near-infrared diffuse correlation spectroscopy (NIR-DCS) is an optical technique for
estimating relative changes in skeletal muscle perfusion during exercise but may be affected …

Towards time-domain diffuse optics with extreme photon rate

L Di Sieno, T Talala, E Avanzi, I Nissinen… - … on Biomedical Optics, 2023 - opg.optica.org
We present the application to time-domain diffuse optics of a device composed of 8x256
CMOS SPAD array with 256 7-bit time-to-digital converters. Thanks to its structure and …

Finding Signal in the Noise: High-Fidelity, Quantitative, Optical Blood Perfusion Imaging with Interference

AM Safi - 2022 - search.proquest.com
For label-free, non-invasive, wide field-of-view (FOV) imaging/monitoring of blood flow,
speckle-based approaches are gaining popularity. However, to obtain quantitative flow …