17 July 2013 Modeling the shape of cylindrically focused transducers in three-dimensional optoacoustic tomography
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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.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Daniel Queirós, Daniel Queirós, Xose Luis Dean-Ben, Xose Luis Dean-Ben, Andreas Buehler, Andreas Buehler, Daniel Razansky, Daniel Razansky, Amir Rosenthal, Amir Rosenthal, Vasilis Ntziachristos, Vasilis Ntziachristos, } "Modeling the shape of cylindrically focused transducers in three-dimensional optoacoustic tomography," Journal of Biomedical Optics 18(7), 076014 (17 July 2013). https://doi.org/10.1117/1.JBO.18.7.076014 . Submission:

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