Research Papers: Imaging

Modeling the shape of cylindrically focused transducers in three-dimensional optoacoustic tomography

[+] Author Affiliations
Daniel Queirós

Institute for Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany

Technische Universität München, Chair for Biological Imaging, Ismaningerstraße 22, 81675 Munich, Germany

Technische Universität München, TUM Graduate School of Information Science in Health (GSISH), Boltzmannstraße 11, 85748 Garching, Germany

Xosé Luís Déan-Ben, Andreas Buehler, Daniel Razansky, Amir Rosenthal, Vasilis Ntziachristos

Institute for Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany

Technische Universität München, Chair for Biological Imaging, Ismaningerstraße 22, 81675 Munich, Germany

J. Biomed. Opt. 18(7), 076014 (Jul 17, 2013). doi:10.1117/1.JBO.18.7.076014
History: Received November 29, 2012; Revised May 29, 2013; Accepted June 20, 2013
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Abstract.  Cross sectional tomographic systems based on cylindrically focused transducers are widely used in optoacoustic (photoacoustic) imaging due to important advantages they provide such as high-cross sectional resolution, real-time imaging capacity, and high-throughput performance. Tomographic images in such systems are commonly obtained by means of two-dimensional (2-D) reconstruction procedures assuming point-like detectors, and volumetric (whole-body) imaging is performed by superimposing the cross sectional images for different positions along the scanning direction. Such reconstruction strategy generally leads to in-plane and out-of-plane artifacts as well as significant quantification errors. Herein, we introduce two equivalent full three-dimensional (3-D) models capable of accounting for the shape of cylindrically focused transducers. The performance of these models in 3-D reconstructions considering several scanning positions is analyzed in this work. Improvements of the results rendered with the introduced reconstruction procedure as compared with the 2-D-based approach are described and discussed for simulations and experiments with phantoms and biological tissues.

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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Daniel Queirós ; Xosé Luís Déan-Ben ; Andreas Buehler ; Daniel Razansky ; Amir Rosenthal, et al.
"Modeling the shape of cylindrically focused transducers in three-dimensional optoacoustic tomography", J. Biomed. Opt. 18(7), 076014 (Jul 17, 2013). ; http://dx.doi.org/10.1117/1.JBO.18.7.076014


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