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Fully motorized optical-resolution photoacoustic microscopy

Li, Lei and Yeh, Chenghung and Hu, Song and Wang, Lidai and Soetikno, Brian T. and Chen, Ruimin and Zhou, Qifa and Shung, K. Kirk and Maslov, Konstantin I. and Wang, Lihong V. (2014) Fully motorized optical-resolution photoacoustic microscopy. Optics Letters, 39 (7). pp. 2117-2120. ISSN 0146-9592. PMCID PMC4048805. doi:10.1364/OL.39.002117.

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We have developed fully motorized optical-resolution photoacoustic microscopy (OR-PAM), which integrates five complementary scanning modes and simultaneously provides a high imaging speed and a wide field of view (FOV) with 2.6 μm lateral resolution. With one-dimensional (1D) motion-mode mechanical scanning, we measured the blood flow through a cross section of a blood vessel in vivo. With two-dimensional (2D) optical scanning at a laser repetition rate of 40 kHz, we achieved a 2 kHz B-scan rate over a range of 50 μm with 20 A-lines and 50 Hz volumetric-scan rate over a FOV of 50  μm×50  μm with 400 A-lines, which enabled real-time tracking of cellular dynamics in vivo. With synchronized 1D optical and 2D mechanical hybrid scanning, we imaged a 10  mm×8  mm FOV within three minutes, which is 20 times faster than the conventional mechanical scan in our second-generation OR-PAM. With three-dimensional mechanical contour scanning, we maintained the optimal signal-to-noise ratio and spatial resolution of OR-PAM while imaging objects with uneven surfaces, which is essential for quantitative studies.

Item Type:Article
Related URLs:
URLURL TypeDescription CentralArticle
Li, Lei0000-0001-6164-2646
Chen, Ruimin0000-0002-5338-359X
Maslov, Konstantin I.0000-0003-3408-8840
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2014 Optical Society of America. Received December 11, 2013; accepted February 8, 2014; posted March 3, 2014 (Doc. ID 202913); published March 28, 2014. The authors appreciate professor James Ballard’s close reading of the manuscript and thank Jinyang Liang, Chiye Li, and Yong Zhou for helpful discussions and experimental assistance. This work was sponsored in part by National Institutes of Health (NIH) grants DP1 EB016986 (NIH Director’s Pioneer Award), R01 CA159959, and R01 CA134539. L.V. Wang has a financial interest in Microphotoacoustics Inc., and Endra Inc., which, however, did not support this work. K. I. Maslov has a financial interest in Microphotoacoustics Inc.
Funding AgencyGrant Number
NIHDP1 EB016986
NIHR01 CA159959
NIHR01 CA134539
Issue or Number:7
Classification Code:OCIS codes: (170.3880) Medical and biological imaging; (170.5120) Photoacoustic imaging; (180.5810) Scanning microscopy; (180.6900) Three-dimensional microscopy
PubMed Central ID:PMC4048805
Record Number:CaltechAUTHORS:20160713-143852261
Persistent URL:
Official Citation:Lei Li, Chenghung Yeh, Song Hu, Lidai Wang, Brian T. Soetikno, Ruimin Chen, Qifa Zhou, K. Kirk Shung, Konstantin I. Maslov, and Lihong V. Wang, "Fully motorized optical-resolution photoacoustic microscopy," Opt. Lett. 39, 2117-2120 (2014)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69013
Deposited By: Tony Diaz
Deposited On:28 Jul 2016 17:58
Last Modified:11 Nov 2021 04:08

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