1
|
Cao J, Yang Q, Miao Y, Li Y, Qiu S, Zhu Z, Wang P, Chen Z. Enhance the delivery of light energy ultra-deep into turbid medium by controlling multiple scattering photons to travel in open channels. LIGHT, SCIENCE & APPLICATIONS 2022; 11:108. [PMID: 35462570 PMCID: PMC9035453 DOI: 10.1038/s41377-022-00795-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/01/2022] [Accepted: 04/09/2022] [Indexed: 05/24/2023]
Abstract
Multiple light scattering is considered as the major limitation for deep imaging and focusing in turbid media. In this paper, we present an innovative method to overcome this limitation and enhance the delivery of light energy ultra-deep into turbid media with significant improvement in focusing. Our method is based on a wide-field reflection matrix optical coherence tomography (RM-OCT). The time-reversal decomposition of the RM is calibrated with the Tikhonov regularization parameter in order to get more accurate reversal results deep inside the scattering sample. We propose a concept named model energy matrix, which provides a direct mapping of light energy distribution inside the scattering sample. To the best of our knowledge, it is the first time that a method to measure and quantify the distribution of beam intensity inside a scattering sample is demonstrated. By employing the inversion of RM to find the matched wavefront and shaping with a phase-only spatial light modulator, we succeeded in both focusing a beam deep (~9.6 times of scattering mean free path, SMFP) inside the sample and increasing the delivery of light energy by an order of magnitude at an ultra-deep (~14.4 SMFP) position. This technique provides a powerful tool to understand the propagation of photon in a scattering medium and opens a new way to focus light inside biological tissues.
Collapse
Affiliation(s)
- Jing Cao
- Beckman Laser Institute, University of California, Irvine, Irvine, CA, 92612, USA
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, 570228, Hainan, China
| | - Qiang Yang
- Beckman Laser Institute, University of California, Irvine, Irvine, CA, 92612, USA
| | - Yusi Miao
- Beckman Laser Institute, University of California, Irvine, Irvine, CA, 92612, USA
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697, USA
| | - Yan Li
- Beckman Laser Institute, University of California, Irvine, Irvine, CA, 92612, USA
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697, USA
| | - Saijun Qiu
- Beckman Laser Institute, University of California, Irvine, Irvine, CA, 92612, USA
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697, USA
| | - Zhikai Zhu
- Beckman Laser Institute, University of California, Irvine, Irvine, CA, 92612, USA
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697, USA
| | - Pinghe Wang
- China State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, 610054, Chengdu, China.
| | - Zhongping Chen
- Beckman Laser Institute, University of California, Irvine, Irvine, CA, 92612, USA.
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697, USA.
| |
Collapse
|
2
|
Kanngiesser J, Roth B. Wavefront Shaping Concepts for Application in Optical Coherence Tomography-A Review. SENSORS (BASEL, SWITZERLAND) 2020; 20:E7044. [PMID: 33316998 PMCID: PMC7763956 DOI: 10.3390/s20247044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 01/10/2023]
Abstract
Optical coherence tomography (OCT) enables three-dimensional imaging with resolution on the micrometer scale. The technique relies on the time-of-flight gated detection of light scattered from a sample and has received enormous interest in applications as versatile as non-destructive testing, metrology and non-invasive medical diagnostics. However, in strongly scattering media such as biological tissue, the penetration depth and imaging resolution are limited. Combining OCT imaging with wavefront shaping approaches significantly leverages the capabilities of the technique by controlling the scattered light field through manipulation of the field incident on the sample. This article reviews the main concepts developed so far in the field and discusses the latest results achieved with a focus on signal enhancement and imaging.
Collapse
Affiliation(s)
- Jonas Kanngiesser
- Hannoversches Zentrum für Optische Technologien, Leibniz Universität Hannover, Nienburger Straße 17, D-30167 Hannover, Germany;
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering–Innovation Across Disciplines), D-30167 Hannover, Germany
| | - Bernhard Roth
- Hannoversches Zentrum für Optische Technologien, Leibniz Universität Hannover, Nienburger Straße 17, D-30167 Hannover, Germany;
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering–Innovation Across Disciplines), D-30167 Hannover, Germany
| |
Collapse
|
3
|
Li Y, Zhang Y, Zhu Y, Yu L. Modified biological spectrum and SNR of Laguerre-Gaussian pulsed beams with orbital angular momentum in turbulent tissue. OPTICS EXPRESS 2019; 27:9749-9762. [PMID: 31045124 DOI: 10.1364/oe.27.009749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 03/08/2019] [Indexed: 06/09/2023]
Abstract
We propose a modified biological spectrum that contains both short length-scale and long length-scale to study light propagation through turbulent biological tissue. Based on the two-scale modified biological spectrum, we derive an analytic expression of the two-frequency mutual coherence function of Laguerre-Gaussian pulsed beam and establish a model of the signal-to-noise ratio (SNR) of Laguerre-Gaussian pulsed beam carrying orbital angular momentum in turbulent biological tissue. The results show that the modified biological spectrum agrees well with experimental results. In addition, the structural length-scale of biological tissue has a significant influence on the bandwidths and SNR of orbital angular momentum states. This work provides theoretical preparation for more accurately medical diagnosis and optical imaging.
Collapse
|
4
|
The State of the NIH BRAIN Initiative. J Neurosci 2018; 38:6427-6438. [PMID: 29921715 DOI: 10.1523/jneurosci.3174-17.2018] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 06/01/2018] [Accepted: 06/04/2018] [Indexed: 12/30/2022] Open
Abstract
The BRAIN Initiative arose from a grand challenge to "accelerate the development and application of new technologies that will enable researchers to produce dynamic pictures of the brain that show how individual brain cells and complex neural circuits interact at the speed of thought." The BRAIN Initiative is a public-private effort focused on the development and use of powerful tools for acquiring fundamental insights about how information processing occurs in the central nervous system (CNS). As the Initiative enters its fifth year, NIH has supported >500 principal investigators, who have answered the Initiative's challenge via hundreds of publications describing novel tools, methods, and discoveries that address the Initiative's seven scientific priorities. We describe scientific advances produced by individual laboratories, multi-investigator teams, and entire consortia that, over the coming decades, will produce more comprehensive and dynamic maps of the brain, deepen our understanding of how circuit activity can produce a rich tapestry of behaviors, and lay the foundation for understanding how its circuitry is disrupted in brain disorders. Much more work remains to bring this vision to fruition, and the National Institutes of Health continues to look to the diverse scientific community, from mathematics, to physics, chemistry, engineering, neuroethics, and neuroscience, to ensure that the greatest scientific benefit arises from this unique research Initiative.
Collapse
|
5
|
Piazza S, Bianchini P, Sheppard C, Diaspro A, Duocastella M. Enhanced volumetric imaging in 2-photon microscopy via acoustic lens beam shaping. JOURNAL OF BIOPHOTONICS 2018; 11:e201700050. [PMID: 28700127 DOI: 10.1002/jbio.201700050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/20/2017] [Accepted: 06/21/2017] [Indexed: 05/26/2023]
Abstract
Three-dimensional imaging at high-spatiotemporal resolutions and over large penetration depths is key for unmasking the dynamics and structural organization of complex biological systems. However, the need to axially shift the focus, with consequent limitations in imaging speed, and signal degradation at large depths due to scattering effects, makes this task challenging. Here, we present a novel approach in 2-photon excitation microscopy that allows fast volumetric imaging and enhanced signal-to-background (S/B) in thick tissue. Our technique is based on ultrafast beam shaping at each pixel by means of an acoustic optofluidic lens. Shaping the excitation beam with different phase profiles enables both high-speed axial focus shifting, for continuous volumetric imaging, and controlled aberrated imaging, advantageous for out-of-focus background removal. We provide a theoretical description of our approach, and demonstrate volumetric imaging of neuronal cells from a mouse brain slice with enhancements in S/B up to a factor of 10 over a depth of 600 μm.
Collapse
Affiliation(s)
- Simonluca Piazza
- Nanoscopy, Istituto Italiano di Tecnologia, Genoa, Italy
- DIBRIS, Università degli Studi di Genova, Genoa, Italy
| | | | - Colin Sheppard
- Nanoscopy, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Alberto Diaspro
- Nanoscopy, Istituto Italiano di Tecnologia, Genoa, Italy
- Department of Physics, Università degli Studi di Genova, Genoa, Italy
| | | |
Collapse
|
6
|
Domingues HS, Cruz A, Chan JR, Relvas JB, Rubinstein B, Pinto IM. Mechanical plasticity during oligodendrocyte differentiation and myelination. Glia 2017; 66:5-14. [PMID: 28940651 DOI: 10.1002/glia.23206] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/31/2017] [Accepted: 08/01/2017] [Indexed: 12/14/2022]
Abstract
In the central nervous system, oligodendrocyte precursor cells are exclusive in their potential to differentiate into myelinating oligodendrocytes. Oligodendrocyte precursor cells migrate within the parenchyma and extend cell membrane protrusions that ultimately evolve into myelinating sheaths able to wrap neuronal axons and significantly increase their electrical conductivity. The subcellular force generating mechanisms driving morphological and functional transformations during oligodendrocyte differentiation and myelination remain elusive. In this review, we highlight the mechanical processes governing oligodendrocyte plasticity in a dynamic interaction with the extracellular matrix.
Collapse
Affiliation(s)
| | - Andrea Cruz
- International Iberian Nanotechnology Laboratory - INL, Braga, Portugal
| | - Jonah R Chan
- Department of Neurology, University of California, San Francisco, United States of America
| | - João B Relvas
- Instituto de Biologia Molecular e Celular - IBMC, Universidade do Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde - I3S, Universidade do Porto, Porto, Portugal
| | - Boris Rubinstein
- Stowers Institute for Medical Research, Kansas City, Missouri, United States of America
| | - Inês Mendes Pinto
- International Iberian Nanotechnology Laboratory - INL, Braga, Portugal
| |
Collapse
|
7
|
Urban A, Golgher L, Brunner C, Gdalyahu A, Har-Gil H, Kain D, Montaldo G, Sironi L, Blinder P. Understanding the neurovascular unit at multiple scales: Advantages and limitations of multi-photon and functional ultrasound imaging. Adv Drug Deliv Rev 2017; 119:73-100. [PMID: 28778714 DOI: 10.1016/j.addr.2017.07.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 07/17/2017] [Accepted: 07/22/2017] [Indexed: 02/07/2023]
Abstract
Developing efficient brain imaging technologies by combining a high spatiotemporal resolution and a large penetration depth is a key step for better understanding the neurovascular interface that emerges as a main pathway to neurodegeneration in many pathologies such as dementia. This review focuses on the advances in two complementary techniques: multi-photon laser scanning microscopy (MPLSM) and functional ultrasound imaging (fUSi). MPLSM has become the gold standard for in vivo imaging of cellular dynamics and morphology, together with cerebral blood flow. fUSi is an innovative imaging modality based on Doppler ultrasound, capable of recording vascular brain activity over large scales (i.e., tens of cubic millimeters) at unprecedented spatial and temporal resolution for such volumes (up to 10μm pixel size at 10kHz). By merging these two technologies, researchers may have access to a more detailed view of the various processes taking place at the neurovascular interface. MPLSM and fUSi are also good candidates for addressing the major challenge of real-time delivery, monitoring, and in vivo evaluation of drugs in neuronal tissue.
Collapse
Affiliation(s)
- Alan Urban
- Neuroelectronics Research Flanders, Leuven, Belgium; VIB, Leuven, Belgium and/or IMEC, Leuven, Belgium; Department of Neurosciences, KU Leuven, Leuven, Belgium; Neurobiology Dept., Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel
| | - Lior Golgher
- Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - Clément Brunner
- Neuroelectronics Research Flanders, Leuven, Belgium; VIB, Leuven, Belgium and/or IMEC, Leuven, Belgium
| | - Amos Gdalyahu
- Neurobiology Dept., Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel
| | - Hagai Har-Gil
- Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - David Kain
- Neurobiology Dept., Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel
| | - Gabriel Montaldo
- Neuroelectronics Research Flanders, Leuven, Belgium; VIB, Leuven, Belgium and/or IMEC, Leuven, Belgium
| | - Laura Sironi
- Physics Dept., Universita degli Studi di Milano Bicocca, Italy
| | - Pablo Blinder
- Neurobiology Dept., Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel; Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel.
| |
Collapse
|
8
|
Kong L, Tang J, Cui M. Multicolor multiphoton in vivo imaging flow cytometry. OPTICS EXPRESS 2016; 24:6126-35. [PMID: 27136806 PMCID: PMC5025233 DOI: 10.1364/oe.24.006126] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/06/2016] [Accepted: 03/07/2016] [Indexed: 05/20/2023]
Abstract
In vivo flow cytometry provides a non-invasive way of probing the biology of circulating cells during disease progression and studying cellular response to therapy. However, current methods provide little morphological information which potentially could be new biological marker for early disease diagnosis, and fail to reveal intercellular interactions. Here we report a multi-color, multiphoton in vivo imaging flow cytometry, to image circulating cells within the vasculature of scattering tissues at high spatiotemporal resolution. We apply it in imaging of cellular dynamics in bone marrow through the intact mouse skull, in situ deformability cytometry, distinguishing cellular clusters, and simultaneously monitoring multiple types of trafficking cells based on their morphologies and fluorescence emission colors.
Collapse
Affiliation(s)
- Lingjie Kong
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907,
USA
| | - Jianyong Tang
- Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892,
USA
| | - Meng Cui
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907,
USA
- Department of Biological Sciences, Purdue University, West Lafayette, IN 47907,
USA
- Integrated Imaging Cluster, Purdue University, West Lafayette, IN 47907,
USA
- Bindley Bioscience Center, Purdue University, West Lafayette, IN 47907,
USA
| |
Collapse
|