Laser-scanning photoacoustic microscopy with ultrasonic phased array transducer

Fan Zheng, Xiangyang Zhang, Chi Tat Chiu, Bill L. Zhou, K. Kirk Shung, Hao F. Zhang, Shuliang Jiao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


In this paper, we report our latest progress on proving the concept that ultrasonic phased array can improve the detection sensitivity and field of view (FOV) in laser-scanning photoacoustic microscopy (LS-PAM). A LS-PAM system with a one-dimensional (1D) ultrasonic phased array was built for the experiments. The 1D phased array transducer consists of 64 active elements with an overall active dimension of 3.2 mm × 2 mm. The system was tested on imaging phantom and mouse ear in vivo. Experiments showed a 15 dB increase of the signal-to-noise ratio (SNR) when beamforming was employed compared to the images acquired with each single element. The experimental results demonstrated that ultrasonic phased array can be a better candidate for LS-PAM in high sensitivity applications like ophthalmic imaging.

Original languageEnglish (US)
Pages (from-to)2694-2698
Number of pages5
JournalBiomedical Optics Express
Issue number11
StatePublished - Nov 1 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Biotechnology


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