Information transport and limits of optical imaging in the highly diffusive regime

Radford, J. and Faccio, D. (2023) Information transport and limits of optical imaging in the highly diffusive regime. Physical Review Research, 5(2), L022008.

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Abstract

Imaging in the highly diffusive regime lies at the heart of various optical medical imaging technologies and other applications such as imaging through fog. However, due to the randomization of the photon propagation direction inside random, complex media, the spatial information of physiological features is degraded such that most diffuse optical imaging techniques are restricted to < 10 transport mean free paths ( ℓ ∗ ) . We present an information theoretical analysis of the limits of gathering information in the highly diffusive regime. Our results show that there is still information even when detection is performed at the single-photon level and beyond 200 ℓ ∗ (e.g., ∼ 12 cm tissue). Image reconstructions are enhanced when resolving measurements in both space and time domains. These results provide a general framework for extremely deep diffuse imaging scenarios, such as imaging through the body, and a general context for developing optimized image retrieval strategies.

Item Type:Articles
Additional Information:The authors acknowledge funding from Engineering and Physical Sciences Research Council (EP-SRC, UK, Grant No. EP/T00097X/1). D.F. is supported by the Royal Academy of Engineering under the Chairs in Emerging Technologies scheme. J.R. is supported by the EP-SRC Centre for Doctoral Training in Intelligent Sensing and Measurement, Grant No. EP/L016753/1.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Faccio, Professor Daniele and Radford, Jack
Authors: Radford, J., and Faccio, D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Research
Publisher:American Physical Society
ISSN:2643-1564
ISSN (Online):2643-1564
Published Online:07 April 2023
Copyright Holders:Copyright © 2023 The Authors
First Published:First published in Physical Review Research 5(2): L022008
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
305567QuantIC - The UK Quantum Technoogy Hub in Quantum Enhanced ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/T00097X/1P&S - Physics & Astronomy
305153RAEng Chair Emerging TechnologiesDaniele FaccioRoyal Academy of Engineering (RAE)CiET1819/20P&S - Physics & Astronomy
190828EPSRC Centre for Doctoral Training in Sensing and MeasurementAndrew HarveyEngineering and Physical Sciences Research Council (EPSRC)EP/L016753/1P&S - Physics & Astronomy