Results 91 to 100 of about 387,781 (388)

Optical sectioning in induced coherence tomography with frequency-entangled photons [PDF]

open access: yes, 2018
We demonstrate a different scheme to perform optical sectioning of a sample based on the concept of induced coherence [Zou et al., Phys. Rev. Lett. 67, 318 (1991)].
Jiménez, Gerard   +3 more
core   +2 more sources

Optical coherence tomography in mild cognitive impairment – systematic review and meta-analysis [PDF]

open access: yes, 2020
Thinning of retinal layers, measured using optical coherence tomography (OCT), is associated with some neurodegenerative disorders such as established Alzheimer’s disease and multiple sclerosis.
Almghairbi, Dalal   +2 more
core   +2 more sources

Non‐Destructive and Mechanical Characterization of the Bond Quality of Co‐Extruded Titanium‐Aluminum Profiles

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the bond quality of co‐extruded aluminum–titanium hybrid profiles, focusing on the lateral angular co‐extrusion (LACE) process. It examines how heat treatments (HT) affect intermetallic phase formation, bond strength, and material properties.
Norman Mohnfeld   +9 more
wiley   +1 more source

Long wavelength optical coherence tomography for painted objects [PDF]

open access: yes, 2013
Optical Coherence Tomography has been successfully applied to the imaging of painted objects in recent years. However, a significant limitation is the low penetration depth of OCT in paint because of the high opacity of paint due to either scattering or ...
Cheung, CS   +4 more
core   +1 more source

Ghost optical coherence tomography

open access: yesOptics Express, 2019
We demonstrate experimentally ghost optical coherence tomography using a broadband incoherent supercontinuum light source with shot-to-shot random spectral fluctuations. The technique is based on ghost imaging in the spectral domain where the object is the spectral interference pattern generated from an optical coherence tomography interferometer in ...
Caroline G. Amiot   +4 more
openaire   +5 more sources

Optical Coherence Tomography of Cholesteatoma [PDF]

open access: yesOtology & Neurotology, 2010
To image cholesteatoma using optical coherence tomography (OCT) and correlate the results with clinical findings and conventional observations obtained using binocular microscopy and histology. OCT is a high-resolution optical imaging modality that generates cross-sectional images of turbid media, such as tissue with resolution approaching that of ...
Djalilian, Hamid R   +6 more
openaire   +5 more sources

Analysis of Temperature and Stress Distribution on the Bond Properties of Hybrid Tailored Formed Components

open access: yesAdvanced Engineering Materials, EarlyView.
Hybrid materials enable high‐performance components but are challenging to process. This study explores an inductive heating concept with spray cooling for steel–aluminum specimens in a two‐step process including friction welding and cup backward extrusion.
Armin Piwek   +7 more
wiley   +1 more source

Optical coherence tomography angiography in preclinical Alzheimer’s disease

open access: yesBritish Journal of Ophthalmology, 2019
Background/aims As a protrusion from the brain, the retina might reflect the status of the brain. Previous studies showed a decrease in vessel density and foveal avascular zone (FAZ) enlargement on optical coherence tomography angiography (OCTA) in ...
Jacoba A van de Kreeke   +12 more
semanticscholar   +1 more source

Mathematical Modelling of Optical Coherence Tomography

open access: yes, 2014
In this chapter a general mathematical model of Optical Coherence Tomography (OCT) is presented on the basis of the electromagnetic theory. OCT produces high resolution images of the inner structure of biological tissues. Images are obtained by measuring
A Knüttel   +41 more
core   +1 more source

Intraoperative detection of blood vessels with an imaging needle during neurosurgery in humans [PDF]

open access: yes, 2018
Intracranial hemorrhage can be a devastating complication associated with needle biopsies of the brain. Hemorrhage can occur to vessels located adjacent to the biopsy needle as tissue is aspirated into the needle and removed. No intraoperative technology
Jacques, Angela   +6 more
core   +3 more sources

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