Versatile optical coherence tomography system applied for imaging of teeth



Amaechi, Bennett T, Podoleanu, Adrian Gh, Rogers, John A, Higham, Susan M, Dunne, Shane and Jackson, David A
(2002) Versatile optical coherence tomography system applied for imaging of teeth. Proceedings of SPIE, 4619. 180 - 186.

[img] Text
AmaechiB2002Versatile.pdf - Published Version

Download (636kB)

Abstract

The utility of a versatile multifunctional standalone Optical Coherence Tomography (OCT)/confocal system for imaging dental tissue was investigated. The system can collect A-scan (reflectivity versus depth graph), longitudinal (B-scan) and en-face (C-scan) OCT images, simultaneously with a confocal image. The power to the sample was 250 jiW, wavelength x= 850 am and the depth resolution in air was 16 jm. The OCT images showed caries lesions as volumes of reduced reflectivity. Transversal images (C-scan) showed the en-face slices of the tooth tissue like in confocal microscopy. Longitudinal images showed the depth ofthe lesion into the tooth tissue as well as the different structural layers of sound tooth in the same way as seen in ultrasound images. A-scans preformed in locations selected in the en-face images provided quantitative data about the reflectivity versus depth. The confocal channel was extremely useful for guidance and it has also shown the integral of the intensity over depth at transversal locations. We concluded that OCT proved capable to detect an early caries lesion, to show the depth of the lesion into the tissue, and quantitatively assess the degree of demineralisation.

Item Type: Article
Additional Information: Available online 14 June 2002. Conference date: Monday 21 January 2002 Conference Location: San Jose, CA, USA Conference Title: Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI
Uncontrolled Keywords: Optical coherence tomography, low coherence mterferometry, dental imaging, caries diagnosis, demineralisation, confocal imaging, enamel, dental caries, optical methods
Subjects: R Medicine > RK Dentistry
Divisions: ?? sch_dental ??
Depositing User: Symplectic Admin
Date Deposited: 15 Oct 2009 10:34
Last Modified: 09 Jan 2021 08:58
DOI: 10.1117/12.470481
Publisher's Statement : ©2003 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. Versatile optical coherence tomography system applied to the imaging of teeth Bennett T. Amaechi, Adrian Gh. Podoleanu, John A. Rogers, Susan M. Higham, Shane Dunne, and David A. Jackson, Proc. SPIE 4619, 180 (2002), DOI:10.1117/12.470481 http://dx.doi.org.ezproxy.liv.ac.uk/10.1117/12.470481
URI: https://livrepository.liverpool.ac.uk/id/eprint/1144