Fast photo-acoustic imaging based on multi-element linear transducer array

Bangzheng Yin; Da Xing; Diwu Yang; Yi Tan; Qun Chen

doi:10.1117/12.589926

Abstract

Photoacoustic imaging combines the contrast advantage of pure optical imaging and the resolution advantage of pure ultrasonic imaging. It has become a popular research subject at present. A fast photoacoustic imaging system based on multi-element linear transducer array and phase-controlled focus method was developed and tested on phantoms and tissues. A Q switched Nd:YAG laser operating at 532nm was used in our experiment as thermal source. The multi-element linear transducer array consists of 320 elements. By phase-controlled focus method, 64 signals, one of which gathered by 11-group element, make up of an image. Experiment results can map the distribution of the optical absorption correctly. The same transducer array also can operate as a conventional phase array and produced ultrasound imaging. Compared to other existing technology and algorithm, the PA imaging based on transducer array was characterize by speediness and convenience. It can provide a new approach for tissue functional imaging in vivo, and may have potentials in developing into an appliance for clinic diagnosis.

Citation Download Citation

Bangzheng Yin, Bangzheng Yin, Da Xing, Da Xing, Diwu Yang, Diwu Yang, Yi Tan, Yi Tan, Qun Chen, Qun Chen, } "Fast photo-acoustic imaging based on multi-element linear transducer array", Proc. SPIE 5697, Photons Plus Ultrasound: Imaging and Sensing 2005: The Sixth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, (25 April 2005); doi: 10.1117/12.589926; https://doi.org/10.1117/12.589926

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