Spatiotemporal antialiasing in photoacoustic computed tomography

Peng Hu; Lei Li; Li Lin; Lihong V. Wang

doi:10.1117/12.2582625

5 March 2021 Spatiotemporal antialiasing in photoacoustic computed tomography

Peng Hu, Lei Li, Li Lin, Lihong V. Wang

Proceedings Volume 11642, Photons Plus Ultrasound: Imaging and Sensing 2021; 1164213 (2021) https://doi.org/10.1117/12.2582625
Event: SPIE BiOS, 2021, Online Only

Abstract

Full-ring ultrasonic transducer array is widely used in photoacoustic computed tomography (PACT) due to its high inplane resolution and full-view fidelity. Image in PACT is often contaminated by spatial aliasing, which has not been studied in detail for full-ring geometry. In this research, using spatiotemporal analysis, we clarified the sources of spatial aliasing. Based this clarification, we demonstrated that the combination of spatial interpolation and temporal filtering can effectively mitigate artifacts caused by aliasing in image reconstruction and spatial sampling. We validated our theory using numerical simulations and in vivo experiments.

Conference Presentation

Citation Download Citation

Peng Hu, Lei Li, Li Lin, and Lihong V. Wang "Spatiotemporal antialiasing in photoacoustic computed tomography", Proc. SPIE 11642, Photons Plus Ultrasound: Imaging and Sensing 2021, 1164213 (5 March 2021); https://doi.org/10.1117/12.2582625

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