Results 31 to 40 of about 311,588 (304)
Multimodal imaging of choroidal nodules in neurofibromatosis type-1
Indian Journal of Ophthalmology, 2018 Choroidal nodules in neurofibromatosis type-1 are common and are best imaged with near-infrared reflectance (NIR) imaging. The authors describe swept-source optical coherence tomography angiography (SSOCTA) of choroidal nodules. These nodules are seen as
Vinod Kumar, Shilky Singh
doaj +1 more source
Choroidal thickness measured by swept source optical coherence tomography in diabetic macular edema
Delta Journal of Ophthalmology, 2020 Purpose The aim of this study was to evaluate the choroidal thickness in eyes with diabetic macular edema (DME) with the use of swept source optical coherence tomography (SS-OCT). Patients and methods A total of 240 eyes were included in this prospective
Haitham Y Al-Nashar, Sahar Hemeda
doaj +1 more source
Swept-wavelength mid-infrared fiber laser for real-time ammonia gas sensing
, 2019 The mid-infrared (mid-IR) spectral region holds great promise for new laser-based sensing technologies, based on measuring strong mid-IR molecular absorption features.
Hudson, D. D. +3 more
core +1 more source
The formation of broad emission line regions in supernova-QSO wind interactions: II. 2D calculations [PDF]
, 2003 One aspect of supernova remnant evolution that is relatively unstudied is the influence of an AGN environment. A high density ambient medium and a nearby powerful continuum source will assist the cooling of shocked ejecta and swept-up gas.
Abajas +59 more
core +2 more sources
Digital ocular swept source optical coherence aberrometry
Biomedical Optics Express, 2021 Ocular aberrometry is an essential technique in vision science and ophthalmology. We demonstrate how a phase-sensitive single mode fiber-based swept source optical coherence tomography (SS-OCT) setup can be employed for quantitative ocular aberrometry with digital adaptive optics (DAO).
Georgiev, Stefan +7 more
openaire +2 more sources
Polarization sensitive optical coherence tomography utilizing a buffered swept source laser
Current Directions in Biomedical Engineering, 2017 We present an approach for polarization sensitive optical coherence tomography (PS-OCT) that solely requires a modification of the light source, a buffered swept source laser. For this purpose a single-mode fiber-based Fourier domain mode locked laser is
Golde Jonas, Kirsten Lars, Koch Edmund
doaj +1 more source
Parallel Imaging of 3D Surface Profile with Space-Division Multiplexing
Sensors, 2016 We have developed a modified optical frequency domain imaging (OFDI) system that performs parallel imaging of three-dimensional (3D) surface profiles by using the space division multiplexing (SDM) method with dual-area swept sourced beams.
Hyung Seok Lee +5 more
doaj +1 more source
Focal choroidal excavation in eyes with central serous chorioretinopathy. [PDF]
, 2013 [Purpose]To study the prevalence and 3-dimensional (3-D) tomographic features of focal choroidal excavations in eyes with central serous chorioretinopathy (CSC) using swept-source optical coherence tomography (OCT).
Akagi-Kurashige, Yumiko +12 more
core +1 more source
Sensors, 2014 A linearized wavelength-swept thermo-optic laser chip was applied to demonstrate a fiber Bragg grating (FBG) sensor interrogation system. A broad tuning range of 11.8 nm was periodically obtained from the laser chip for a sweep rate of 16 Hz.
Hyung-Seok Lee +5 more
doaj +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source