In vivo depth-resolved tissue contrast by local birefringence and differential optic axis orientation using polarization-sensitive swept-source optical coherence tomography

2009 ◽  
Author(s):  
Shuichi Makita ◽  
Masahiro Yamanari ◽  
Yoshiaki Yasuno
Keyword(s):  
Optical Coherence Tomography ◽  
Optic Axis ◽  
Optical Coherence ◽  
Swept Source ◽  
Axis Orientation ◽  
Tissue Contrast

scholarly journals Quantitative Swept-Source Optical Coherence Tomography of Early Enamel Erosion in vivo

2017 ◽  
Vol 51 (4) ◽  
pp. 410-418 ◽  
Author(s):  
Rupert S. Austin ◽  
Maisalamah Haji Taha ◽  
Frederic Festy ◽  
Richard Cook ◽  
Manoharan Andiappan ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Healthy Volunteers ◽  
Orange Juice ◽  
Signal Intensity ◽  
Surface States ◽  
Enamel Surface ◽  
Optical Coherence ◽  
Swept Source ◽  
Water Rinsing

Swept-source optical coherence tomography (SS-OCT) shows potential for the in vivo quantitative evaluation of micro-structural enamel surface phenomena occurring during early erosive demineralization. This randomized controlled single-blind cross-over clinical study aimed to evaluate the use of SS-OCT for detecting optical changes in the enamel of 30 healthy volunteers subjected to orange juice rinsing (erosive challenge) in comparison to mineral water rinsing (control), according to wiped and non-wiped enamel surface states. Participants were randomly allocated to 60 min of orange juice rinsing (pH 3.8) followed by 60 min of water rinsing (pH 6.7) and vice versa, with a 2-week wash-out period. In addition, the labial surfaces of the right or left maxillary incisors were wiped prior to SS-OCT imaging. An automated ImageJ algorithm was designed to analyse the back-scattered OCT signal intensity (D) after orange juice rinsing compared to after water rinsing. D was quantified as the OCT signal scattering from the 33 µm sub-surface enamel, normalised by the total OCT signal intensity entering the enamel. The back-scattered OCT signal intensity increased by 3.1% (95% CI 1.1-5.1%) in the wiped incisors and by 3.5% (95% CI 1.5-5.5%) in the unwiped incisors (p < 0.0001). Wiping reduced the back-scattered OCT signal intensity by 1.7% (95% CI -3.2 to -0.3%; p = 0.02) in comparison to the unwiped enamel surfaces for both rinsing solutions (p = 0.2). SS-OCT detected OCT signal changes in the superficial sub-surface enamel of maxillary central incisor teeth of healthy volunteers after orange juice rinsing.

Swept source optical coherence tomography for in vivo imaging and vibrometry in the apex of the mouse cochlea

2015 ◽  
Author(s):  
Hee Yoon Lee ◽  
Patrick D. Raphael ◽  
Audrey K. Ellerbee ◽  
Brian E. Applegate ◽  
John S. Oghalai
Keyword(s):  
Optical Coherence Tomography ◽  
In Vivo Imaging ◽  
Optical Coherence ◽  
Swept Source

4D in vivo imaging of subpleural lung parenchyma by swept source optical coherence tomography

2009 ◽  
Author(s):  
S. Meissner ◽  
A. Tabuchi ◽  
M. Mertens ◽  
H. Homann ◽  
J. Walther ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
In Vivo Imaging ◽  
Lung Parenchyma ◽  
Optical Coherence ◽  
Swept Source

scholarly journals Sensing of Tooth Microleakage Based on Dental Optical Coherence Tomography

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Chia-Wei Sun ◽  
Yi-Ching Ho ◽  
Shyh-Yuan Lee
Keyword(s):  
Optical Coherence Tomography ◽  
Scanning Probe ◽  
Filling Material ◽  
Optical Coherence ◽  
Oral Medicine ◽  
Swept Source ◽  
Treatment Plans ◽  
Imaging Instrument ◽  
Good Contrast

This study describes microleakage sensing based on swept-source optical coherence tomography (SS-OCT). With a handheld scanning probe, the SS-OCT system can provide portable real-time imaging for clinical diagnosis. Radiography is the traditional clinical imaging instrument used for dentistry; however, it does not provide good contrast images between filling material and the enamel of treated teeth with microleakage. The results of this study show that microleakage can be detected with oral probing using SS-OCTin vivo. The calculated microleakage length was 401 μm and the width is 148 μm, which is consistent with the related histological biopsy measurements. The diagnosis of microleakage in teeth could be useful for prevention of secondary caries in the clinical treatment plans developed in the field of oral medicine.

In vivo depth structural imaging of rat olfactory bulb with a swept source optical coherence tomography

2011 ◽  
Vol 71 ◽  
pp. e207
Author(s):  
Hideyuki Watanabe ◽  
Uma Maheswari Rajagopalan ◽  
Yu Nakamichi ◽  
Kei Igarashi ◽  
Violeta Dimitrova Madjarova ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Olfactory Bulb ◽  
Optical Coherence ◽  
Structural Imaging ◽  
Swept Source

scholarly journals In vivo early detection of smoke-induced airway injury using three-dimensional swept-source optical coherence tomography

2009 ◽  
Vol 14 (6) ◽  
pp. 060503 ◽  
Author(s):  
Jiechen Yin ◽  
Gangjun Liu ◽  
Jun Zhang ◽  
Lingfeng Yu ◽  
Sari Mahon ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Early Detection ◽  
Three Dimensional ◽  
Optical Coherence ◽  
Swept Source ◽  
Airway Injury
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