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Proceedings Paper

3D near-infrared imaging based on a single-photon avalanche diode array sensor
Author(s): Juan Mata Pavia; Martin Wolf; Edoardo Charbon
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Paper Abstract

Near-infrared light can be used to determine the optical properties (absorption and scattering) of human tissue. Optical tomography uses this principle to image the internal structure of parts of the body by measuring the light that is scattered in the tissue. An imager for optical tomography was designed based on a detector with 128x128 single photon pixels that included a bank of 32 time-to-digital converters. Due to the high spatial resolution and the possibility of performing time resolved measurements, a new contactless setup has been conceived. The setup has a resolution of 97ps and operates with a laser source with an average power of 3mW. This new setup generated an high amount of data that could not be processed by established methods, therefore new concepts and algorithms were developed to take advantage of it. Simulations show that the potential resolution of the new setup would be much higher than previous designs. Measurements have been performed showing its potential. Images derived from the measurements showed that it is possible to reach a resolution of at least 5mm.

Paper Details

Date Published: 10 October 2012
PDF: 6 pages
Proc. SPIE 8460, Biosensing and Nanomedicine V, 84601J (10 October 2012); doi: 10.1117/12.978029
Show Author Affiliations
Juan Mata Pavia, Univ. Hospital Zürich (Switzerland)
Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Martin Wolf, Univ. Hospital Zürich (Switzerland)
Edoardo Charbon, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Technische Univ. Delft (Netherlands)

Published in SPIE Proceedings Vol. 8460:
Biosensing and Nanomedicine V
Hooman Mohseni; Massoud H. Agahi; Manijeh Razeghi, Editor(s)

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