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Proceedings Paper

A curved array photoacoustic tomography system for small animal imaging
Author(s): Andres Aguirre; John Gamelin; Anastasios Maurudis; Fei Huang; Diego Castillo; Puyun Guo; Lihong V. Wang; Quing Zhu
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Paper Abstract

We have developed and tested a photoacoustic imaging system based on a 128 element curved-phased ultrasonic array, which spans a quarter of a complete circle with a radius of curvature equal to 25mm. The center frequency of the array is 5 MHz with 60% bandwidth. The physical dimensions of the elements are 10x0.3mm (elevation x azimuth) with an elevation focus of 19mm. Earlier we reported acoustic measurements of the axial and lateral resolutions of the system that were limited by the impulse response of the narrowband source used in the test. In this paper we discuss photoacoustic characterization of the system including resolution and sensitivity. The array forms the building block for a 512-element ring designed for complete tomographic imaging of small animals. Imaging results of phantoms will be compared with simulations.

Paper Details

Date Published: 13 February 2007
PDF: 10 pages
Proc. SPIE 6437, Photons Plus Ultrasound: Imaging and Sensing 2007: The Eighth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 64370V (13 February 2007); doi: 10.1117/12.707548
Show Author Affiliations
Andres Aguirre, Univ. of Connecticut (United States)
John Gamelin, Univ. of Connecticut (United States)
Anastasios Maurudis, Univ. of Connecticut (United States)
Fei Huang, Univ. of Connecticut (United States)
Diego Castillo, Univ. of Connecticut (United States)
Puyun Guo, Univ. of Connecticut (United States)
Lihong V. Wang, Washington Univ. in St. Louis (United States)
Quing Zhu, Univ. of Connecticut (United States)


Published in SPIE Proceedings Vol. 6437:
Photons Plus Ultrasound: Imaging and Sensing 2007: The Eighth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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