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A new approach to depict bone surfaces in finger imaging using photoacoustic tomography

Biswas, SK and van Es, P and Steenbergen, W and Manohar, S (2015) A new approach to depict bone surfaces in finger imaging using photoacoustic tomography. In: PHOTONS PLUS ULTRASOUND: IMAGING AND SENSING 2015, FEB 08-10, 2015, San Francisco, CA.

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Official URL: http://dx.doi.org/ 10.1117/12.2078703

Abstract

Imaging the vasculature close around the finger joints is of interest in the field of rheumatology. Locally increased vasculature in the synovial membrane of these joints can be a marker for rheumatoid arthritis. In previous work we showed that part of the photoacoustically induced ultrasound from the epidermis reflects on the bone surface within the finger. These reflected signals could be wrongly interpreted as new photoacoustic sources. In this work we show that a conventional ultrasound reconstruction algorithm, that considers the skin as a collection of ultrasound transmitters and the PA tomography probe as the detector array, can be used to delineate bone surfaces of a finger. This can in the future assist in the localization of the joint gaps. This can provide us with a landmark to localize the region of the inflamed synovial membrane. We test the approach on finger mimicking phantoms.

Item Type: Conference Proceedings
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Additional Information: Copy right for this article belongs to the SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
Keywords: photoacoustic computed tomography; ultrasound; bone delineation; joint gap; finger; rheumatoid arthritis
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Date Deposited: 22 Jun 2015 06:59
Last Modified: 22 Jun 2015 06:59
URI: http://eprints.iisc.ernet.in/id/eprint/51743

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