Results 61 to 70 of about 3,498,742 (390)

Quantum coherence of cosmological perturbations

open access: yes, 2017
The degrees of quantum coherence of cosmological perturbations of different spins are computed in the large-scale limit and compared with the standard results holding for a single mode of the electromagnetic field in an optical cavity.
Giovannini, Massimo
core   +1 more source

Optical Coherence Tomography Angiography [PDF]

open access: yesRetina, 2015
This issue of the journal RETINA is devoted to the use of optical coherence tomography (OCT) in creation of a new form of angiography, known as OCT angiography. Optical coherence tomography produces depth-resolved evaluation of the reflectance data from tissue.
Richard F, Spaide   +2 more
openaire   +2 more sources

Panretinal Optical Coherence Tomography

open access: yesIEEE Transactions on Medical Imaging, 2023
We introduce a new concept of panoramic retinal (panretinal) optical coherence tomography (OCT) imaging system with a 140° field of view (FOV). To achieve this unprecedented FOV, a contact imaging approach was used which enabled faster, more efficient, and quantitative retinal imaging with measurement of axial eye length.
Shuibin Ni   +10 more
openaire   +2 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Multimodal imaging of type 1 aneurysmal telangiectasia in a Turkish female with giant arteriovenous aneurysmal malformation

open access: yesTherapeutic Advances in Ophthalmology, 2019
We present a case with giant arteriovenous aneurysmal malformation with different imaging modalities, including fundus photography, fundus fluorescein angiography, spectral domain optical coherence tomography, and optical coherence tomography angiography.
Yasin Sakir Goker   +3 more
doaj   +1 more source

Anterior segment optical coherence tomography

open access: yesProgress in retinal and eye research, 2018
Optical coherence tomography (OCT) provides non‐contact, rapid in vivo imaging of ocular structures, and has become a key part of evaluating the anterior segment of the eye.

semanticscholar   +1 more source

Real-time high-resolution mid-infrared optical coherence tomography [PDF]

open access: yesLight: Science & Applications, 2018
The potential for improving the penetration depth of optical coherence tomography systems by using light sources with longer wavelengths has been known since the inception of the technique in the early 1990s. Nevertheless, the development of mid-infrared
N. Israelsen   +9 more
semanticscholar   +1 more source

Remote Monitoring in Myasthenia Gravis: Exploring Symptom Variability

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is a rare, autoimmune disorder characterized by fluctuating muscle weakness and potential life‐threatening crises. While continuous specialized care is essential, access barriers often delay timely interventions. To address this, we developed MyaLink, a telemedical platform for MG patients.
Maike Stein   +13 more
wiley   +1 more source

Singular value representation of the coherence Poincaré sphere

open access: yesJournal of the European Optical Society-Rapid Publications, 2022
The so-called coherence Poincaré sphere was recently introduced for geometrical visualization of the state of two-point spatial coherence of a random electromagnetic beam. The formalism and its interpretation strongly utilized a specific decomposition of
Laatikainen Jyrki   +3 more
doaj   +1 more source

OCTID: Optical Coherence Tomography Image Database [PDF]

open access: yesComputers & electrical engineering, 2018
Optical coherence tomography (OCT) is a non-invasive imaging modality which is widely used in clinical ophthalmology. OCT images are capable of visualizing deep retinal layers which is crucial for early diagnosis of retinal diseases.
P. Gholami   +3 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy