A simple Fourier transform-based reconstruction formula for photoacoustic computed tomography with a circular or
spherical measurement geometry

Kun Wang; Mark A. Anastasio

doi:10.1117/12.2007340

4 March 2013 A simple Fourier transform-based reconstruction formula for photoacoustic computed tomography with a circular or spherical measurement geometry

Kun Wang, Mark A. Anastasio

Author Affiliations +

Proceedings Volume 8581, Photons Plus Ultrasound: Imaging and Sensing 2013; 85814K (2013) https://doi.org/10.1117/12.2007340
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

Photoacoustic computed tomography (PACT), also known as optoacoustic tomography or thermoacoustic tomography, is an emerging biomedical imaging technique that combines optical absorption contrast with ultrasound detection principles. Recently, a novel analytic image reconstruction formula has been proposed that operates on a data function expressed in the temporal frequency and spatial domains. The validity the formula has been demonstrated for a two-dimensional (2D) circular measurement geometry. In this study, computer simulation studies are conducted to validate the reconstruction formula for a three-dimensional (3D) spherical measurement geometry. This formula provides new insights into how the spatial frequency components of the sought-after object function can be explicitly determined by the temporal frequency components of the data function measured with a 2D circular or 3D spherical measurement geometry in PACT. Comparing with existing Fourier transform-based reconstruction formulas, the reconstruction formula possesses a simple structure that requires no computation of series expansions or multi-dimensional interpolation in Fourier space.

Citation Download Citation

Kun Wang and Mark A. Anastasio "A simple Fourier transform-based reconstruction formula for photoacoustic computed tomography with a circular or spherical measurement geometry", Proc. SPIE 8581, Photons Plus Ultrasound: Imaging and Sensing 2013, 85814K (4 March 2013); https://doi.org/10.1117/12.2007340

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