Abstract
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 language | English (US) |
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Pages (from-to) | 2694-2698 |
Number of pages | 5 |
Journal | Biomedical Optics Express |
Volume | 3 |
Issue number | 11 |
DOIs | |
State | Published - Nov 1 2012 |
ASJC Scopus subject areas
- Biotechnology
- Atomic and Molecular Physics, and Optics