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JOURNAL ARTICLE

Rapid and noncontact photoacoustic tomography imaging system using an interferometer with high-speed phase modulation technique

Jun Liu, Zhilie Tang, Yongbo Wu, Yi Wang
Review of Scientific Instruments 2015, 86 (4): 044904
25933886
We designed, fabricated, and tested a rapid and noncontact photoacoustic tomography (PAT) imaging system using a low-coherence interferometer with high-speed phase modulation technique. Such a rapid and noncontact probing system can greatly decrease the time of imaging. The proposed PAT imaging system is experimentally verified by capturing images of a simulated tissue sample and the blood vessels within the ear flap of a mouse (pinna) in vivo. The axial and lateral resolutions of the system are evaluated at 45 and ∼15 μm, respectively. The imaging depth of the system is 1 mm in a special phantom. Our results show that the proposed system opens a promising way to realize noncontact, real-time PAT.

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