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Literature DB >> 29546734

High-throughput ultraviolet photoacoustic microscopy with multifocal excitation.

Toru Imai^1,2, Junhui Shi¹, Terence T W Wong^1,2, Lei Li¹, Liren Zhu^1,2, Lihong V Wang¹.

Abstract

Ultraviolet photoacoustic microscopy (UV-PAM) is a promising intraoperative tool for surgical margin assessment (SMA), one that can provide label-free histology-like images with high resolution. In this study, using a microlens array and a one-dimensional (1-D) array ultrasonic transducer, we developed a high-throughput multifocal UV-PAM (MF-UV-PAM). Our new system achieved a 1.6 ± 0.2 μm lateral resolution and produced images 40 times faster than the previously developed point-by-point scanning UV-PAM. MF-UV-PAM provided a readily comprehensible photoacoustic image of a mouse brain slice with specific absorption contrast in ∼16 min, highlighting cell nuclei. Individual cell nuclei could be clearly resolved, showing its practical potential for intraoperative SMA. (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).

Entities: Gene Species

Keywords: 1-D array ultrasonic transducer; microlens array; photoacoustic imaging; surgical margin assessment; ultraviolet laser

Mesh：

Year: 2018 PMID： 29546734 PMCID： PMC5852316 DOI： 10.1117/1.JBO.23.3.036007

Source DB: PubMed Journal: J Biomed Opt ISSN： 1083-3668 Impact factor: 3.170

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