High-speed laser photoacoustic imaging system combined with a digital ultrasonic imaging platform

Lvming Zeng; Guodong Liu; Xuanrong Ji; Zhong Ren; Zhen Huang

doi:10.1117/12.835260

31 August 2009 High-speed laser photoacoustic imaging system combined with a digital ultrasonic imaging platform

Lvming Zeng, Guodong Liu, Xuanrong Ji, Zhong Ren, Zhen Huang

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73823M (2009) https://doi.org/10.1117/12.835260
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

As a new field of combined ultrasound/photoacoustic imaging in biomedical photonics research, we present and demonstrate a high-speed laser photoacoustic imaging system combined with digital ultrasound imaging platform. In the prototype system, a new B-mode digital ultrasonic imaging system is modified as the hardware platform with 384 vertical transducer elements. The centre resonance frequency of the piezoelectric transducer is 5.0 MHz with greater than 70% pulse-echo -6dB fractional bandwidth. The modular instrument of PCI-6541 is used as the hardware control centre of the testing system, which features 32 high-speed channels to build low-skew and multi-channel system. The digital photoacoustic data is transported into computer for subsequent reconstruction at 25 MHz clock frequency. Meantime, the software system for controlling and analyzing is correspondingly explored with LabVIEW language on virtual instrument platform. In the breast tissue experiment, the reconstructed image agrees well with the original sample, and the spatial resolution of the system can reach 0.2 mm with multi-element synthetic aperture focusing technique. Therefore, the system and method may have a significant value in improving early detecting level of cancer in the breast and other organs.

Citation Download Citation

Lvming Zeng, Guodong Liu, Xuanrong Ji, Zhong Ren, and Zhen Huang "High-speed laser photoacoustic imaging system combined with a digital ultrasonic imaging platform", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73823M (31 August 2009); https://doi.org/10.1117/12.835260

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