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Conference 13006 > Paper 13006-27
Paper 13006-27

Overview of camera based ultrasound detection and its application in photoacoustic imaging (Invited Paper)

9 April 2024 • 14:00 - 14:30 CEST | Etoile B, Niveau/Level 1

Abstract

A promising alternative ultrasound detection scheme in photoacoustic imaging is the use of an optical camera to achieve massively parallelized data acquisition. For this purpose, the millions of pixels of common CMOS- or CCD-cameras are used to capture ultrasound-induced intensity modulations of a light field. Depending on the interaction mechanism in the propagation medium or at an interface, either projections or sectional images of the pressure field are recorded directly by means of free beam propagation or indirectly via optical fibers at certain times of wave propagation. Here we present the functionality of different experimental implementations and discusses their advantages and disadvantages in terms of achievable sensitivity, bandwidth, data structure, image acquisition rate, suitability for multimodal imaging, compactness of the implementation and gives an outlook on future new developments in this direction.

Presenter

Karl-Franzens-Univ. Graz (Austria)
Robert Nuster received his Dipl. Phil. Nat. degree in physics from the University of Graz (UoG), Austria, in 2003 for his thesis on "Non-contact ultrasound diagnostics based on interferometric registration of laser-generated optoacoustic waves" and the PhD in physics from the same University in 2007 on "Development and application of broadband optical sensors for the detection of laser-induced ultrasound". From 2008-2011, as a PostDoc at the UoG, he was significantly involved in projects on photoacoustic imaging with integrating sensors and laser ultrasound. Since 2011 he has been working as a project leader and key researcher at the UoG in a variety of basic but also applied projects with industry collaborations. His research focuses on the development of novel photoacoustic imaging techniques and their versatile applications, the characterization of a wide variety of materials with laser ultrasound, and the development of novel ultrasound generation and detection techniques.
Presenter/Author
Karl-Franzens-Univ. Graz (Austria)
Author
Karl-Franzens-Univ. Graz (Austria)