Publication detail
Enhancement of the signal-to-noise ratio at depths in Fourier domain optical coherence tomography
BRADU, A. BOUCHAL, P. PODOLEANU, A.
Czech title
Zvýšení poměru signál/šum ve Fourierovské optické koherentní tomografii
English title
Enhancement of the signal-to-noise ratio at depths in Fourier domain optical coherence tomography
Type
conference paper
Language
en
Original abstract
We present a Fourier domain optical coherence tomography set-up built around an optical configuration that exhibits Talbot bands. To produce Talbot bands, the two interferometer beams, object and reference are laterally shifted in their way towards the diffraction grating. This allows attenuation of mirror terms and optimisation of the sensitivity profile. We imaged the human skin in-vivo, and quantified the profile of the sensitivity profile in tissue by measuring the ratio between the strengths of signals originating in the reticular dermis and in the stratum corneum for different values of the lateral shift of the two interfering beams.
Czech abstract
Představujeme Fourierovskou optickou koherentní tomografii využívající Talbotových pásů. V modifikovaném interferometru lze příčně separovat dva interferometrické svazky při jejich cestě do spektrometru. To umožňuje snížit vliv konjugovaného obrazu a optimalizovat kontrast detekovaného signálu ve vybraných hloubkách zobrazovaného objektu. Výsledky jsou demonstrovány a kvantifikovany za využití in-vivo pozorování lidské pokožky.
English abstract
We present a Fourier domain optical coherence tomography set-up built around an optical configuration that exhibits Talbot bands. To produce Talbot bands, the two interferometer beams, object and reference are laterally shifted in their way towards the diffraction grating. This allows attenuation of mirror terms and optimisation of the sensitivity profile. We imaged the human skin in-vivo, and quantified the profile of the sensitivity profile in tissue by measuring the ratio between the strengths of signals originating in the reticular dermis and in the stratum corneum for different values of the lateral shift of the two interfering beams.
Keywords in English
optical coherence tomography; Talbot bands; mirror terms
RIV year
2012
Released
09.02.2012
Publisher
SPIE-INT SOC OPTICAL ENGINEERING
Location
BELLINGHAM, WA 98227-0010 USA
ISBN
978-0-8194-8856-5
ISSN
0277-786X
Book
Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI
Volume
8213
Number
821337
Pages from–to
[1]–[5]
Pages count
5
BIBTEX
@inproceedings{BUT99007,
author="Adrian {Bradu} and Petr {Bouchal} and Adrian {Podoleanu},
title="Enhancement of the signal-to-noise ratio at depths in Fourier domain optical coherence tomography",
booktitle="Proc. SPIE 8213, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI",
year="2012",
volume="8213",
number="821337",
month="February",
pages="[1]--[5]",
publisher="SPIE-INT SOC OPTICAL ENGINEERING",
address="BELLINGHAM, WA 98227-0010 USA",
isbn="978-0-8194-8856-5",
issn="0277-786X"
}