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Proceedings Paper

Optical reflection tomography along the geometrical thickness
Author(s): Masato Ohmi; Koji Yoden; Masamitsu Haruna
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Paper Abstract

Very recently, we proposed and demonstrated a novel optical reflection tomography along the geometrical thickness, reflecting a real cross-sectional structure of an object. This technique is based on simultaneous measurement of refractive index n and thickness t of a sample using the combination of a low coherence interferometer and confocal optics. The interferometer provides optical coherence tomography (OCT) of the dimension of the optical thickness (=n x t) along the optical axis, while the confocal optics gives us another type of reflection tomography, having the thickness dimension of nearly t/n along the optical axis. This tomography can be called confocal reflection tomography (CRT) and has not yet been demonstrated, to our knowledge. Simple image processing of OCT and CRT results in desired reflection tomographic image, showing 2D refractive index distribution along the geometrical thickness. In this paper, we present the validity of our proposed method using the concave glass plate as well as the application for in vivo measurement of biological tissue.

Paper Details

Date Published: 23 May 2001
PDF: 5 pages
Proc. SPIE 4251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V, (23 May 2001); doi: 10.1117/12.427874
Show Author Affiliations
Masato Ohmi, Osaka Univ. School of Allied Health Sciences (Japan)
Koji Yoden, Osaka Univ. School of Allied Health Sciences (Japan)
Masamitsu Haruna, Osaka Univ. School of Allied Health Sciences (Japan)


Published in SPIE Proceedings Vol. 4251:
Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V
Valery V. Tuchin; Joseph A. Izatt; James G. Fujimoto, Editor(s)

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