scholarly journals Potential Imaging Capability of Optical Coherence Tomography as Dental Optical Probe: A Mini-Review

2021 ◽  
Vol 11 (22) ◽  
pp. 11025
Author(s):  
Ramadhan Hardani Putra ◽  
Nobuhiro Yoda ◽  
Eha Renwi Astuti ◽  
Keiichi Sasaki
Keyword(s):  
Optical Coherence Tomography ◽  
Soft Tissues ◽  
Optical Probe ◽  
Periodontal Pocket ◽  
Optical Coherence ◽  
Imaging Capability ◽  
Online Searches ◽  
Imaging Performance ◽  
Clinical Experiments ◽  
Further Development

Optical coherence tomography (OCT) has been emerging in the dental field as an alternative diagnostic imaging for “optical probes” owing to its micro-meter resolution and non-invasiveness. This review aims to answer the following question: what is the imaging capability of OCT to visualize the subgingival area? Online searches were performed on PubMed and SPIE digital library databases, followed by a manual screening of references listed in relevant studies. The feasibility and imaging performance of OCT to visualize the subgingival area, including the periodontal, peri-implant, and crown margins, are discussed. All of the literature reviewed in this study demonstrated that OCT has the ability to visualize periodontal, including hard and soft tissues, and peri-implant conditions with high resolution. Gingival sulcus depth, periodontal pocket, and calculus deposition can also be depicted. However, clinical evidence that support the imaging capability of OCT as a dental optical probe to visualize subgingival area is lacking. Limited availability, portability, and usability of OCT for clinical experiments in dentistry, particularly for the subgingival area, might be contributed to its limitations. Hence, further development of handheld OCT systems and controlled clinical trials are needed to confirm the imaging capability of OCT reported in this review.

scholarly journals Quantitative imaging of cochlear soft tissues in wild-type and hearing-impaired transgenic mice by spectral domain optical coherence tomography

2011 ◽  
Vol 19 (16) ◽  
pp. 15415 ◽  
Author(s):  
Simon S. Gao ◽  
Anping Xia ◽  
Tao Yuan ◽  
Patrick D. Raphael ◽  
Ryan L. Shelton ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Transgenic Mice ◽  
Soft Tissues ◽  
Quantitative Imaging ◽  
Hearing Impaired ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Wild Type

scholarly journals Adaptive optical probe design for optical coherence tomography and microscopy using tunable optics

2013 ◽  
Vol 21 (2) ◽  
pp. 1567 ◽  
Author(s):  
Minseog Choi ◽  
Seungwan Lee ◽  
Jong-hyeon Chang ◽  
Eunsung Lee ◽  
Kyu-Dong Jung ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Probe ◽  
Probe Design ◽  
Optical Coherence

scholarly journals Imaging the Electro-Kinetic Response of Biological Tissues with Optical Coherence Tomography

2021 ◽  
Author(s):  
Valentin Demidov
Keyword(s):  
Optical Coherence Tomography ◽  
Soft Tissues ◽  
Low Frequency ◽  
Depth Resolution ◽  
Biological Tissues ◽  
Phase Changes ◽  
Optical Coherence ◽  
Ac Electric Field ◽  
Novel Approach ◽  
Phase Images

This thesis reports on developing a novel approach to imaging the electro-kinetic response of biological tissues with optical coherence tomography (OCT). The changes of backscattered OCT signal from tissues were investigated with a low frequency AC electric field being applied to the tissues. Advanced processing algorithms were developed to analyze the amplitude and phase changes of OCT signal. Two-dimensional electrically induced optical changes (EIOC) amplitude and phase images related to the electro-kinetic response of soft tissues were obtained with depth resolution and compared with structural OCT images. The procedure for removing the background noise from EIOC images was introduced.

scholarly journals Microscale light management and inherent optical properties of intact corals studied with optical coherence tomography

2019 ◽  
Vol 16 (151) ◽  
pp. 20180567 ◽  
Author(s):  
Daniel Wangpraseurt ◽  
Steven Jacques ◽  
Niclas Lyndby ◽  
Jacob Boiesen Holm ◽  
Christine Ferrier Pages ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Properties ◽  
Light Scattering ◽  
Soft Tissues ◽  
Coral Species ◽  
High Efficiency ◽  
Coral Tissue ◽  
Optical Coherence ◽  
Stylophora Pistillata ◽  
Inherent Optical Properties

Coral reefs are highly productive photosynthetic systems and coral optics studies suggest that such high efficiency is due to optimized light scattering by coral tissue and skeleton. Here, we characterize the inherent optical properties, i.e. the scattering coefficient, μ s , and the anisotropy of scattering, g , of eight intact coral species using optical coherence tomography (OCT). Specifically, we describe light scattering by coral skeletons, coenoarc tissues, polyp tentacles and areas covered by fluorescent pigments (FP). Our results reveal that light scattering between coral species ranges from μ s = 3 mm −1 ( Stylophora pistillata ) to μ s = 25 mm −1 ( Echinopora lamelosa ) . For Platygyra pini , μ s was 10-fold higher for tissue versus skeleton, while in other corals (e.g. Hydnophora pilosa ) no difference was found between tissue and skeletal scattering. Tissue scattering was threefold enhanced in coenosarc tissues ( μ s = 24.6 mm −1 ) versus polyp tentacles ( μ s = 8.3 mm −1 ) in Turbinaria reniformis . FP scattering was almost isotropic when FP were organized in granule chromatophores ( g = 0.34) but was forward directed when FP were distributed diffusely in the tissue ( g = 0.96). Our study provides detailed measurements of coral scattering and establishes a rapid approach for characterizing optical properties of photosynthetic soft tissues via OCT in vivo .

Optical probe using eccentric optics for optical coherence tomography

2007 ◽  
Vol 271 (1) ◽  
pp. 285-290 ◽  
Author(s):  
Yoshiyuki Takahashi ◽  
Mitsuharu Iwaya ◽  
Yuuki Watanabe ◽  
Manabu Sato
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Probe ◽  
Optical Coherence
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