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Table-top diffuse optical imaging

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These file attachments have been under embargo and were made available to the public after the embargo was lifted on 25 January 2011.

Author: Sturgeon, K.A. (Univ.Glasgow) · Bakker, L.P.
Type:report
Date:2006-01-31
Embargo lifted:2011-01-25
Publisher: Philips Research
Institution: Philips Research
Identifier: TN 2006/00057
Keywords: diffuse optical tomography · optical imaging · spectroscopy
Rights: (c) Koninklijke Philips Electronics N.V.

Abstract

This report describes the work done during a six months internshipat Philips Research for a Masters in Electronic and Electrical Engineering. An existing table-top tomography system for measuring lightin phantom breasts was restored. Updated software control and image reconstruction software was created using LabVIEW. Furthermore, wehave realised a new system and software to carry out spectroscopic measurements of diffuse reflectance light in turbid media.The set upcomprises a broadband light source, a spectrometer and a probe. The design for the probe allows for many different source and detector arrangements to be investigated. The software allows detector fibres selected by a user to be measured sequentially by producing controlsfor a fibre switch. The set-up can measure both fluids and solidsand can successfully accommodate for high dynamic range in measurements by altering the integration times through an algorithm implemented in the software. We have done measurements on forearms and first results using the set-up indicates the possibility of measuring Hb and HbO2.

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