Elucidation of 2D and 3D photoacoustic tomography

Kun Wang, Jin Zhang, Mark A. Anastasio

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Photoacoustic tomography (PAT), also known as thermoacoustic or optoacoustic tomography, is a hybrid imaging modality that reconstructs the electromagnetic absorption properties of biological tissue from knowledge of acoustic signals produced by the thermoacoustic effect. Because the propagation of acoustic signals is most generally described by the 3D wave equation, PAT is an inherently 3D imaging modality. Due to the the limited penetration depth of the probing electromagnetic fields and the limited availability of 3D ultrasound detector arrays, a simplified two-dimensional (2D) PAT measurement geometry is used in many current experimental implementations. However, in this case, when unfocused transducers are employed, the acquired data are not sufficient to invert the 3D imaging model and ad hoc reconstruction procedures are employed. In this work we numerically investigate 2D and 3D PAT assuming an ultrasound transducer having an anisotropic detection response. The uncompensated effects of an anisotropic detection response on images reconstructed using a point-detector assumption are demonstrated.

Original languageEnglish (US)
Title of host publicationPhotons Plus Ultrasound
Subtitle of host publicationImaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics
DOIs
StatePublished - Apr 23 2008
Externally publishedYes
Event9th Conference on Photons Plus Ultrasound: Imaging and Sensing 2008 - San Jose, CA, United States
Duration: Jan 20 2008Jan 23 2008

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6856
ISSN (Print)1605-7422

Conference

Conference9th Conference on Photons Plus Ultrasound: Imaging and Sensing 2008
CountryUnited States
CitySan Jose, CA
Period1/20/081/23/08

Keywords

  • Image reconstruction
  • Photoacoustic tomography
  • Ultrasound transducer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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