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A simple Fourier transform-based reconstruction formula for photoacoustic computed tomography with a circular or spherical measurement geometry.
- Source :
-
Physics in Medicine & Biology . 12/7/2012, Vol. 57 Issue 23, pN493-N499. 7p. - Publication Year :
- 2012
-
Abstract
- Photoacoustic computed tomography (PACT), also known as optoacoustic tomography, is an emerging imaging modality that has great potential for a wide range of biomedical imaging applications. In this note, we derive a hybrid reconstruction formula that is mathematically exact and operates on a data function that is expressed in the temporal frequency and spatial domains. This formula explicitly reveals new insights into how the spatial frequency components of the sought-after object function are determined by the temporal frequency components of the data functionmeasured with a circular or spherical measurement geometry in two- and three-dimensional implementations of PACT, respectively. The structure of the reconstruction formula is surprisingly simple compared with existing Fourier-domain reconstruction formulae. It also yields a straightforward numerical implementation that is robust and two orders ofmagnitude more computationally efficient than filtered backprojection algorithms. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319155
- Volume :
- 57
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- Physics in Medicine & Biology
- Publication Type :
- Academic Journal
- Accession number :
- 83883642
- Full Text :
- https://doi.org/10.1088/0031-9155/57/23/N493