A curved array photoacoustic tomography system for small animal imaging

Andres Aguirre; John Gamelin; Anastasios Maurudis; Fei Huang; Diego Castillo; Puyun Guo; Lihong V. Wang; Quing Zhu

doi:10.1117/12.707548

13 February 2007 A curved array photoacoustic tomography system for small animal imaging

Andres Aguirre, John Gamelin, Anastasios Maurudis, Fei Huang, Diego Castillo, Puyun Guo, Lihong V. Wang, Quing Zhu

Proceedings Volume 6437, Photons Plus Ultrasound: Imaging and Sensing 2007: The Eighth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics; 64370V (2007) https://doi.org/10.1117/12.707548
Event: SPIE BiOS, 2007, San Jose, California, United States

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.

Citation Download Citation

Andres Aguirre, John Gamelin, Anastasios Maurudis, Fei Huang, Diego Castillo, Puyun Guo, Lihong V. Wang, and Quing Zhu "A curved array photoacoustic tomography system for small animal imaging", Proc. SPIE 6437, Photons Plus Ultrasound: Imaging and Sensing 2007: The Eighth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 64370V (13 February 2007); https://doi.org/10.1117/12.707548

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