Results 1 to 10 of about 62,286 (210)

Characterization of a Time-Resolved Diffuse Optical Spectroscopy Prototype Using Low-Cost, Compact Single Photon Avalanche Detectors for Tissue Optics Applications [PDF]

Sensors, 2018
Time-resolved diffuse optical spectroscopy (TR-DOS) is an increasingly used method to determine the optical properties of diffusive media, particularly for medical applications including functional brain, breast and muscle measurements.
Mrwan Alayed, Darek P. Palubiak, M. Jamal Deen   +2 more
doaj   +2 more sources

In vivo imaging of the outer retina after an autologous neurosensory retinal free flap transplantation for a refractory macular hole closure [PDF]

Journal of Medical Case Reports
Background There are limited surgical options to successfully close a refractory macular hole. One promising option is an autologous neurosensory retinal free flap transplantation.
Danae A. Johnson, Nathan Doble, Matthew P. Ohr, Stacey S. Choi   +3 more
doaj   +2 more sources

Evaluation of Signal Degradation Due to Birefringence in a Multiple Reference Optical Coherence Tomography System With Polarization-Based Balanced Detection

IEEE Photonics Journal, 2022
Although time-domain optical coherence tomography (TD-OCT) systems are straightforward to realize, the imaging speed, sensitivity, and imaging depth limit their range of applications.
Anand Arangath, Kai Neuhaus, Sergey Alexandrov, Martin Leahy   +3 more
doaj   +1 more source

Simple Characterization Scheme for Optical Coherence Tomography Systems With Application to a Commercial and a Near-Isometric Resolution Fibre-Based System

IEEE Photonics Journal, 2022
Optical Coherence Tomography (OCT) is a rapidly growing imaging modality in biomedical optics. OCT can perform high-resolution, cross-sectional imaging of the microstructure of biological tissues by measuring the coherent spectrum from the backscattered ...
Rajib Dey, Yi Zhou, Kai Neuhaus, Sergey Alexandrov, Andrew Nolan, Ting-Chiao Chang, Martin Leahy   +6 more
doaj   +1 more source

Contrast agents for photoacoustic imaging: a review of stem cell tracking

Stem Cell Research & Therapy, 2021
With the advent of stem cell therapy for spinal cord injuries, stroke, burns, macular degeneration, heart diseases, diabetes, rheumatoid arthritis and osteoarthritis; the need to track the survival, migration pathways, spatial destination and ...
Soorya James, Kai Neuhaus, Mary Murphy, Martin Leahy   +3 more
doaj   +1 more source

Accessing depth-resolved high spatial frequency content from the optical coherence tomography signal

Scientific Reports, 2021
Optical coherence tomography (OCT) is a rapidly evolving technology with a broad range of applications, including biomedical imaging and diagnosis. Conventional intensity-based OCT provides depth-resolved imaging with a typical resolution and sensitivity
Sergey Alexandrov, Anand Arangath, Yi Zhou, Mary Murphy, Niamh Duffy, Kai Neuhaus, Georgina Shaw, Ryan McAuley, Martin Leahy   +8 more
doaj   +1 more source

VIS-NIR Diffuse Reflectance Spectroscopy System with Self-Calibrating Fiber-Optic Probe: Study of Perturbation Resistance

Diagnostics, 2023
We report on the comparative analysis of self-calibrating and single-slope diffuse reflectance spectroscopy in resistance to different measurement perturbations.
Valeriya Perekatova, Alexey Kostyuk, Mikhail Kirillin, Ekaterina Sergeeva, Daria Kurakina, Olga Shemagina, Anna Orlova, Aleksandr Khilov, Ilya Turchin   +8 more
doaj   +1 more source

Co-axial acoustic-based optical coherence vibrometry probe for the quantification of resonance frequency modes in ocular tissue

Scientific Reports, 2022
We present a co-axial acoustic-based optical coherence vibrometry probe (CoA-OCV) for vibro-acoustic resonance quantification in biological tissues.
Ryan McAuley, A. Nolan, A. Curatolo, S. Alexandrov, F. Zvietcovich, A. Varea Bejar, S. Marcos, M. Leahy, J. S. Birkenfeld   +8 more
doaj   +1 more source

Transformational change in the field of diffuse optics: From going bananas to going nuts [PDF]

Journal of Innovative Optical Health Sciences, 2020
The concept of region of sensitivity is central to the field of diffuse optics and is closely related to the Jacobian matrix used to solve the inverse problem in imaging. It is well known that, in diffuse reflectance, the region of sensitivity associated
Sergio Fantini, Giles Blaney, Angelo Sassaroli   +2 more
doaj   +1 more source

The Use of Supercontinuum Laser Sources in Biomedical Diffuse Optics: Unlocking the Power of Multispectral Imaging

Applied Sciences, 2021
Optical techniques based on diffuse optics have been around for decades now and are making their way into the day-to-day medical applications.
Frédéric Lange, Luca Giannoni, Ilias Tachtsidis   +2 more
doaj   +1 more source