Investigation of retinal vessel autoregulation using real-time spectral domain Doppler optical coherence tomography

2006 ◽  
Author(s):  
Bradley A. Bower ◽  
Mingtao Zhao ◽  
Joseph A. Izatt
Keyword(s):  
Optical Coherence Tomography ◽  
Real Time ◽  
Retinal Vessel ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Doppler Optical Coherence Tomography

scholarly journals Retinal vessel structure measurement using spectral-domain optical coherence tomography

Eye ◽  
2015 ◽  
Vol 30 (1) ◽  
pp. 111-119 ◽  
Author(s):  
T H Rim ◽  
Y S Choi ◽  
S S Kim ◽  
M-j Kang ◽  
J Oh ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Retinal Vessel ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Vessel Structure ◽  
Structure Measurement

Ambiguity-free spectral-domain optical coherence tomography for determining the layer thicknesses in fluttering foils in real time

2012 ◽  
Vol 50 (10) ◽  
pp. 1372-1376 ◽  
Author(s):  
Alexandra Nemeth ◽  
Robert Gahleitner ◽  
Günther Hannesschläger ◽  
Giselher Pfandler ◽  
Michael Leitner
Keyword(s):  
Optical Coherence Tomography ◽  
Real Time ◽  
Spectral Domain ◽  
Optical Coherence

scholarly journals Numerical-Sampling-Functionalized Real-Time Index Regulation for Direct k-Domain Calibration in Spectral Domain Optical Coherence Tomography

Electronics ◽  
2018 ◽  
Vol 7 (9) ◽  
pp. 182 ◽  
Author(s):  
Sangyeob Han ◽  
Oeon Kwon ◽  
Ruchire Wijesinghe ◽  
Pilun Kim ◽  
Unsang Jung ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Real Time ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Axial Resolution ◽  
Dependent Signal ◽  
Nonlinear Sampling ◽  
Time Linear ◽  
Optical Laser ◽  
Sd Oct

An index-regulation technique functionalized by numerical sampling for direct calibration of the non-linear wavenumber (k)-domain to a linear domain in spectral domain optical coherence tomography (SD-OCT) is proposed. The objective of the developed method is to facilitate high-resolution identification of microstructures in biomedical imaging. Subjective optical alignments caused by nonlinear sampling of interferograms in the k-domain tend to hinder depth-dependent signal-to-noise ratios (SNR) and axial resolution in SD-OCT. Moreover, the optical-laser-dependent k-domain requires constant recalibrated in accordance with each laser transition, thereby necessitating either hardware or heavy software compensations. As the key feature of the proposed method, a relatively simple software-based k-domain mask calibration technique was developed to enable real-time linear sampling of k-domain interpolations whilst facilitating image observation through use of an index-regulation technique. Moreover, it has been confirmed that dispersion can be simultaneously compensated with noise residuals generated using the proposed technique, and that use of complex numerical or hardware techniques are no longer required. Observed results, such as fall-off, SNR, and axial resolution clearly exhibit the direct impact of the proposed technique, which could help investigators rapidly achieve optical-laser-independent high-quality SD-OCT images.

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