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Head & Neck Oncology

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Open Access 01-12-2012 | Research

Structural validation of oral mucosal tissue using optical coherence tomography

Authors: Zaid Hamdoon, Waseem Jerjes, Raed Al-Delayme, Gordon McKenzie, Amrita Jay, Colin Hopper

Published in: Head & Neck Oncology | Issue 1/2012

Abstract

Background

Optical coherence tomography (OCT) is a non-invasive optical technology using near-infrared light to produce cross-sectional tissue images with lateral resolution.

Objectives

The overall aims of this study was to generate a bank of normative and pathological OCT data of the oral tissues to allow identification of cellular structures of normal and pathological processes with the aim to create a diagnostic algorithm which can be used in the early detection of oral disorders.

Material and methods

Seventy-three patients with 78 suspicious oral lesions were referred for further management to the UCLH Head and Neck Centre, London. The entire cohort had their lesions surgically biopsied (incisional or excisional). The immediate ex vivo phase involved scanning the specimens using optical coherence tomography. The specimens were then processed by a histopathologist.

Five tissue structures were evaluated as part of this study, including: keratin cell layer, epithelial layer, basement membrane, lamina propria and other microanatomical structures. Two independent assessors (clinician and pathologist trained to use OCT) assessed the OCT images and were asked to comment on the cellular structures and changes involving the five tissue structures in non-blind fashion.

Results

Correct identification of the keratin cell layer and its structural changes was achieved in 87% of the cohort; for the epithelial layer it reached 93.5%, and 94% for the basement membrane. Microanatomical structures identification was 64% for blood vessels, 58% for salivary gland ducts and 89% for rete pegs. The agreement was “good” between the clinician and the pathologist.

OCT was able to differential normal from pathological tissue and pathological tissue of different entities in this immediate ex vivo study. Unfortunately, OCT provided inadequate cellular and subcellular information to enable the grading of oral premalignant disorders.

Conclusion

This study enabled the creation of OCT bank of normal and pathological oral tissues. The pathological changes identified using OCT enabled differentiation between normal and pathological tissues, and identification of different tissue pathologies.

Further studies are required to assess the accuracy of OCT in identification of various pathological processes involving the oral tissues.

Available only for authorised users

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Ridgway JM, Armstrong WB, Guo S, Mahmood U, Su J, Jackson RP, Shibuya T, Crumley RL, Gu M, Chen Z, Wong BJ: In vivo optical coherence tomography of the human oral cavity and oropharynx. Arch Otolaryngol Head Neck Surg. 2006, 132: 1074-1081. 10.1001/archotol.132.10.1074.CrossRefPubMed

Title: Structural validation of oral mucosal tissue using optical coherence tomography
Authors: Zaid Hamdoon
Waseem Jerjes
Raed Al-Delayme
Gordon McKenzie
Amrita Jay
Colin Hopper
Publication date: 01-12-2012
Publisher: BioMed Central
Published in: Head & Neck Oncology / Issue 1/2012
Electronic ISSN: 1758-3284
DOI: https://doi.org/10.1186/1758-3284-4-29

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Abstract

Background

Objectives

Material and methods

Results

Conclusion

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