Mathematical formulation of meaningful OCT image and speckle with dispersed scatterer modeling

Yoshiaki Yasuno; Kiriko Tomita; Naoki Fukutake; Shuichi Makita

doi:10.1117/12.3005611

13 March 2024 Mathematical formulation of meaningful OCT image and speckle with dispersed scatterer modeling

Yoshiaki Yasuno, Kiriko Tomita, Naoki Fukutake, Shuichi Makita

Proceedings Volume PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII; PC128301D (2024) https://doi.org/10.1117/12.3005611
Event: SPIE BiOS, 2024, San Francisco, California, United States

Conference Poster

Abstract

Speckle is a well-known and inevitable phenomenon exhibiting in optical coherence tomography (OCT). However, conventional OCT imaging formula cannot isolate the speckles from a meaningful OCT image. Here we introduce a new formulation of OCT to mathematically explicitly represent the meaningful image and speckle. We represent an intensity OCT image as a collection of complex contributions from scatterers. This formulation clarified that the intensity OCT image is the summation of a meaningful OCT image and speckles. In addition, it was found that the meaningful OCT image is equivalent to the incoherent image of the sample. This equation also recapitulates well-known properties of speckle.

Citation Download Citation

Yoshiaki Yasuno, Kiriko Tomita, Naoki Fukutake, and Shuichi Makita "Mathematical formulation of meaningful OCT image and speckle with dispersed scatterer modeling", Proc. SPIE PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII, PC128301D (13 March 2024); https://doi.org/10.1117/12.3005611

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