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Queirós, D. ; Dean-Ben, X.L. ; Bühler, A. ; Razansky, D. ; Rosenthal, A. ; Ntziachristos, V.

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

J. Biomed. Opt. 18:76014 (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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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Photoacoustic Tomography; Optoacoustic Tomography; Focused Transducer; Image Reconstruction; Photoacoustic Microscopy ; Reconstruction ; Resolution ; Detectors ; Brain
ISSN (print) / ISBN 1083-3668
e-ISSN 1560-2281
Journal Journal of Biomedical Optics
Quellenangaben Volume: 18, Issue: 7, Pages: , Article Number: 76014 Supplement: ,
Publisher SPIE
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Biological and Medical Imaging (IBMI)