Differences between time domain and Fourier domain optical coherence tomography in imaging tissues

2017 ◽  
Vol 268 (2) ◽  
pp. 119-128 ◽  
Author(s):  
W. GAO ◽  
X. WU
Keyword(s):  
Optical Coherence Tomography ◽  
Time Domain ◽  
Fourier Domain ◽  
Optical Coherence

scholarly journals Comparison of Fourier-Domain and Time-Domain Optical Coherence Tomography in the Measurement of Thinnest Corneal Thickness in Keratoconus

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Chunxiao Wang ◽  
Xueying Xia ◽  
Bishan Tian ◽  
Shiyou Zhou
Keyword(s):  
Optical Coherence Tomography ◽  
Time Domain ◽  
Pearson Correlation ◽  
Corneal Thickness ◽  
Intraclass Correlation ◽  
Fourier Domain ◽  
Optical Coherence ◽  
Highly Correlated ◽  
Time Domain Oct

Objective. To compare fourier-domain optical coherence tomography (FD-OCT) and time-domain OCT (TD-OCT) in the determination of thinnest corneal thickness (TCT).Methods. This study included 55 keratoconus patients and 50 healthy volunteers. The RTVue-OCT (FD-OCT) and Visante-OCT (TD-OCT) were used for the measurement of the TCT. Three consecutive scans were performed. The comparison and agreement between the two modalities were analyzed by pairedt-test, the Pearson correlation, intraclass correlation coefficient (ICC), and Bland-Altman plots. intraobserver repeatability was analyzed by the intraobserver within-subject standard deviation (S(w)), coefficient of variation (CV(w)), and ICC.Results. The TCT value of normal corneas was higher by RTVue-OCT (530.4 ± 19.7 μm) than Visante-OCT (521.5 ± 18.3 μm) (p<0.001). For keratoconus eyes, the TCT was 425.0 ± 58.2 μm and 424.4 ± 55.7 μm (difference being 0.6 ± 10.2 μm,p=0.604). Strong correlation (r= 0.938∼0.985) (ICC = 0.915–0.984) was observed between the two OCTs, and each OCT exhibited excellent repeatability in determining the TCT in all subjects (ICC = 0.984–0.994).Conclusions. The values of TCT obtained from RTVue-OCT and Visante-OCT were highly correlated; however, the two values were different. Both OCT instruments exhibited good intraobserver reliability. The existence of systematic differences suggested that the two instruments cannot be used interchangeably.

Comparison of Fourier-Domain and Time-Domain Optical Coherence Tomography in the Detection of Band Atrophy of the Optic Nerve

2009 ◽  
Vol 147 (1) ◽  
pp. 56-63.e2 ◽  
Author(s):  
Luciana V.F. Costa-Cunha ◽  
Leonardo P. Cunha ◽  
Roberto F.S. Malta ◽  
Mário L.R. Monteiro
Keyword(s):  
Optical Coherence Tomography ◽  
Optic Nerve ◽  
Time Domain ◽  
Fourier Domain ◽  
Optical Coherence

Fourier domain versus time domain optical coherence tomography of the prostate nerves

2011 ◽  
Author(s):  
Shahab Chitchian ◽  
Gwen Lagoda ◽  
Arthur Burnett ◽  
Nathaniel M. Fried
Keyword(s):  
Optical Coherence Tomography ◽  
Time Domain ◽  
Domain Versus ◽  
Fourier Domain ◽  
Optical Coherence
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