Snapshot photoacoustic topography through an ergodic relay for high-throughput imaging of optical absorption


Journal Article

© 2020, The Author(s), under exclusive licence to Springer Nature Limited. Current embodiments of photoacoustic imaging require either serial detection with a single-element ultrasonic transducer or parallel detection with an ultrasonic array, necessitating a trade-off between cost and throughput. Here, we present photoacoustic topography through an ergodic relay (PATER) for low-cost high-throughput snapshot wide-field imaging. Encoding spatial information with randomized temporal signatures through ergodicity, PATER requires only a single-element ultrasonic transducer to capture a wide-field image with a single laser shot. We applied PATER to demonstrate both functional imaging of haemodynamic responses and high-speed imaging of blood pulse wave propagation in mice in vivo. Leveraging the high frame rate of 2 kHz, PATER tracked and localized moving melanoma tumour cells in the mouse brain in vivo, which enabled flow velocity quantification and super-resolution imaging. Among the potential biomedical applications of PATER, wearable devices to monitor human vital signs in particular is envisaged.

Full Text

Duke Authors

Cited Authors

  • Li, Y; Li, L; Zhu, L; Maslov, K; Shi, J; Hu, P; Bo, E; Yao, J; Liang, J; Wang, L; Wang, LV

Published Date

  • March 1, 2020

Published In

Volume / Issue

  • 14 / 3

Start / End Page

  • 164 - 170

Electronic International Standard Serial Number (EISSN)

  • 1749-4893

International Standard Serial Number (ISSN)

  • 1749-4885

Digital Object Identifier (DOI)

  • 10.1038/s41566-019-0576-2

Citation Source

  • Scopus