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McFadden C, Marin Z, Chen B, Daetwyler S, Wang X, Rajendran D, Dean KM, Fiolka R. Adaptive Optics in an Oblique Plane Microscope. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.21.586191. [PMID: 38562744 PMCID: PMC10983975 DOI: 10.1101/2024.03.21.586191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Adaptive optics (AO) can restore diffraction limited performance when imaging beyond superficial cell layers in vivo and in vitro, and as such is of interest for advanced 3D microscopy methods such as light-sheet fluorescence microscopy (LSFM). In a typical LSFM system, the illumination and detection paths are separate and subject to different optical aberrations. To achieve optimal microscope performance, it is necessary to sense and correct these aberrations in both light paths, resulting in a complex microscope system. Here, we show that in an oblique plane microscope (OPM), a type of LSFM with a single primary objective lens, the same deformable mirror can correct both the illumination and fluorescence detection. Besides reducing the complexity, we show that AO in OPM also restores the relative alignment of the light-sheet and focal plane, and that a projection imaging mode can stabilize and improve the wavefront correction in a sensorless AO format. We demonstrate OPM with AO on fluorescent nanospheres and by imaging the vasculature and cancer cells in zebrafish embryos embedded in a glass capillary, restoring diffraction limited resolution and improving the signal strength twofold.
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Affiliation(s)
- Conor McFadden
- Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
- Cecil H. and Ida Green Center for Systems Biology, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
| | - Zach Marin
- Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
- Cecil H. and Ida Green Center for Systems Biology, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
| | - Bingying Chen
- Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
- Cecil H. and Ida Green Center for Systems Biology, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
| | - Stephan Daetwyler
- Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
- Cecil H. and Ida Green Center for Systems Biology, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
| | - Xiaoding Wang
- Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
- Cecil H. and Ida Green Center for Systems Biology, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
| | - Divya Rajendran
- Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
- Cecil H. and Ida Green Center for Systems Biology, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
| | - Kevin M. Dean
- Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
- Cecil H. and Ida Green Center for Systems Biology, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
| | - Reto Fiolka
- Lyda Hill Department for Bioinformatics, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
- Department of Cell Biology, UT Southwestern Medical Center, 6000 Harry Hines BLVD, Dallas, TX 75390, USA
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Johnson C, Guo M, Schneider MC, Su Y, Khuon S, Reiser N, Wu Y, La Riviere P, Shroff H. Phase diversity-based wavefront sensing for fluorescence microscopy. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.19.572369. [PMID: 38168170 PMCID: PMC10760184 DOI: 10.1101/2023.12.19.572369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Fluorescence microscopy is an invaluable tool in biology, yet its performance is compromised when the wavefront of light is distorted due to optical imperfections or the refractile nature of the sample. Such optical aberrations can dramatically lower the information content of images by degrading image contrast, resolution, and signal. Adaptive optics (AO) methods can sense and subsequently cancel the aberrated wavefront, but are too complex, inefficient, slow, or expensive for routine adoption by most labs. Here we introduce a rapid, sensitive, and robust wavefront sensing scheme based on phase diversity, a method successfully deployed in astronomy but underused in microscopy. Our method enables accurate wavefront sensing to less than λ/35 root mean square (RMS) error with few measurements, and AO with no additional hardware besides a corrective element. After validating the method with simulations, we demonstrate calibration of a deformable mirror > 100-fold faster than comparable methods (corresponding to wavefront sensing on the ~100 ms scale), and sensing and subsequent correction of severe aberrations (RMS wavefront distortion exceeding λ/2), restoring diffraction-limited imaging on extended biological samples.
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Affiliation(s)
- Courtney Johnson
- Janelia Research Campus, Howard Hughes Medical Institute (HHMI), Ashburn, VA, USA
| | - Min Guo
- Current address: State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China
- Laboratory of High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
| | | | - Yijun Su
- Janelia Research Campus, Howard Hughes Medical Institute (HHMI), Ashburn, VA, USA
- Laboratory of High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
| | - Satya Khuon
- Janelia Research Campus, Howard Hughes Medical Institute (HHMI), Ashburn, VA, USA
| | - Nikolaj Reiser
- Department of Radiology, University of Chicago, Chicago, IL, USA
| | - Yicong Wu
- Laboratory of High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
| | - Patrick La Riviere
- Department of Radiology, University of Chicago, Chicago, IL, USA
- MBL Fellows Program, Marine Biological Laboratory, Woods Hole, MA, USA
| | - Hari Shroff
- Janelia Research Campus, Howard Hughes Medical Institute (HHMI), Ashburn, VA, USA
- Laboratory of High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
- MBL Fellows Program, Marine Biological Laboratory, Woods Hole, MA, USA
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Sortino R, Cunquero M, Castro-Olvera G, Gelabert R, Moreno M, Riefolo F, Matera C, Fernàndez-Castillo N, Agnetta L, Decker M, Lluch JM, Hernando J, Loza-Alvarez P, Gorostiza P. Three-Photon Infrared Stimulation of Endogenous Neuroreceptors in Vivo. Angew Chem Int Ed Engl 2023; 62:e202311181. [PMID: 37823736 DOI: 10.1002/anie.202311181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/30/2023] [Accepted: 10/11/2023] [Indexed: 10/13/2023]
Abstract
To interrogate neural circuits and crack their codes, in vivo brain activity imaging must be combined with spatiotemporally precise stimulation in three dimensions using genetic or pharmacological specificity. This challenge requires deep penetration and focusing as provided by infrared light and multiphoton excitation, and has promoted two-photon photopharmacology and optogenetics. However, three-photon brain stimulation in vivo remains to be demonstrated. We report the regulation of neuronal activity in zebrafish larvae by three-photon excitation of a photoswitchable muscarinic agonist at 50 pM, a billion-fold lower concentration than used for uncaging, and with mid-infrared light of 1560 nm, the longest reported photoswitch wavelength. Robust, physiologically relevant photoresponses allow modulating brain activity in wild-type animals with spatiotemporal and pharmacological precision. Computational calculations predict that azobenzene-based ligands have high three-photon absorption cross-section and can be used directly with pulsed infrared light. The expansion of three-photon pharmacology will deeply impact basic neurobiology and neuromodulation phototherapies.
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Affiliation(s)
- Rosalba Sortino
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, 08028, Barcelona, Spain
- CIBER-BBN, ISCIII, 28029, Madrid, Spain
| | - Marina Cunquero
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels (Barcelona), Spain
| | - Gustavo Castro-Olvera
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels (Barcelona), Spain
| | - Ricard Gelabert
- Departament de Química, Universitat Autònoma de Barcelona (UAB), 08193, Bellaterra, Spain
| | - Miquel Moreno
- Departament de Química, Universitat Autònoma de Barcelona (UAB), 08193, Bellaterra, Spain
| | - Fabio Riefolo
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, 08028, Barcelona, Spain
- CIBER-BBN, ISCIII, 28029, Madrid, Spain
- Current address: Teamit Institute, Partnerships, Barcelona Health Hub, 08025, Barcelona, Spain
| | - Carlo Matera
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, 08028, Barcelona, Spain
- CIBER-BBN, ISCIII, 28029, Madrid, Spain
- Current address: Department of Pharmaceutical Sciences, University of Milan, 20133, Milan, Italy
| | - Noèlia Fernàndez-Castillo
- CIBER-BBN, ISCIII, 28029, Madrid, Spain
- Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
- Institut de Biomedicina de la, Universitat de Barcelona (IBUB), 08028, Barcelona, Spain
- Institut de Recerca Sant Joan de Déu (IRSJD), 08950, Esplugues de Llobregat, Spain
| | - Luca Agnetta
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry, Ludwig Maximilian University of Würzburg, 97074, Würzburg, Germany
| | - Michael Decker
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry, Ludwig Maximilian University of Würzburg, 97074, Würzburg, Germany
| | - José M Lluch
- Departament de Química, Universitat Autònoma de Barcelona (UAB), 08193, Bellaterra, Spain
- Institut de Biotecnologia i de Biomedicina (IBB), UAB, 08193, Bellaterra, Spain
| | - Jordi Hernando
- Departament de Química, Universitat Autònoma de Barcelona (UAB), 08193, Bellaterra, Spain
| | - Pablo Loza-Alvarez
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels (Barcelona), Spain
| | - Pau Gorostiza
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, 08028, Barcelona, Spain
- CIBER-BBN, ISCIII, 28029, Madrid, Spain
- Catalan Institution of Research and Advanced Studies (ICREA), 08010, Barcelona, Spain
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Yao P, Liu R, Broggini T, Thunemann M, Kleinfeld D. Construction and use of an adaptive optics two-photon microscope with direct wavefront sensing. Nat Protoc 2023; 18:3732-3766. [PMID: 37914781 PMCID: PMC11033548 DOI: 10.1038/s41596-023-00893-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/24/2023] [Indexed: 11/03/2023]
Abstract
Two-photon microscopy, combined with the appropriate optical labelling, enables the measurement and tracking of submicrometer structures within brain cells, as well as the spatiotemporal mapping of spikes in individual neurons and of neurotransmitter release in individual synapses. Yet, the spatial resolution of two-photon microscopy rapidly degrades as imaging is attempted at depths of more than a few scattering lengths into tissue, i.e., below the superficial layers that constitute the top 300-400 µm of the neocortex. To obviate this limitation, we shape the focal volume, generated by the excitation beam, by modulating the incident wavefront via guidestar-assisted adaptive optics. Here, we describe the construction, calibration and operation of a two-photon microscope that incorporates adaptive optics to restore diffraction-limited resolution at depths close to 900 µm in the mouse cortex. Our setup detects a guidestar formed by the excitation of a red-shifted dye in blood serum, used to directly measure the wavefront. We incorporate predominantly commercially available optical, optomechanical, mechanical and electronic components, and supply computer-aided design models of other customized components. The resulting adaptive optics two-photon microscope is modular and allows for expanded imaging and optical excitation capabilities. We demonstrate our methodology in the mouse neocortex by imaging the morphology of somatostatin-expressing neurons that lie 700 µm beneath the pia, calcium dynamics of layer 5b projection neurons and thalamocortical glutamate transmission to L4 neurons. The protocol requires ~30 d to complete and is suitable for users with graduate-level expertise in optics.
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Affiliation(s)
- Pantong Yao
- Neurosciences Graduate Program, University of California San Diego, La Jolla, CA, USA
| | - Rui Liu
- Department of Physics, University of California San Diego, La Jolla, CA, USA
| | - Thomas Broggini
- Department of Physics, University of California San Diego, La Jolla, CA, USA
| | - Martin Thunemann
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - David Kleinfeld
- Neurosciences Graduate Program, University of California San Diego, La Jolla, CA, USA.
- Department of Physics, University of California San Diego, La Jolla, CA, USA.
- Department of Neurobiology, University of California San Diego, La Jolla, CA, USA.
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Zhang Q, Hu Q, Berlage C, Kner P, Judkewitz B, Booth M, Ji N. Adaptive optics for optical microscopy [Invited]. BIOMEDICAL OPTICS EXPRESS 2023; 14:1732-1756. [PMID: 37078027 PMCID: PMC10110298 DOI: 10.1364/boe.479886] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 03/06/2023] [Accepted: 03/06/2023] [Indexed: 05/03/2023]
Abstract
Optical microscopy is widely used to visualize fine structures. When applied to bioimaging, its performance is often degraded by sample-induced aberrations. In recent years, adaptive optics (AO), originally developed to correct for atmosphere-associated aberrations, has been applied to a wide range of microscopy modalities, enabling high- or super-resolution imaging of biological structure and function in complex tissues. Here, we review classic and recently developed AO techniques and their applications in optical microscopy.
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Affiliation(s)
- Qinrong Zhang
- Department of Physics, Department of Molecular & Cellular Biology, University of California, Berkeley, CA 94720, USA
| | - Qi Hu
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
| | - Caroline Berlage
- Charité - Universitätsmedizin Berlin, Einstein Center for Neurosciences, NeuroCure Cluster of Excellence, 10117 Berlin, Germany
- Humboldt-Universität zu Berlin, Institute for Biology, 10099 Berlin, Germany
| | - Peter Kner
- School of Electrical and Computer Engineering, University of Georgia, Athens, GA 30602, USA
| | - Benjamin Judkewitz
- Charité - Universitätsmedizin Berlin, Einstein Center for Neurosciences, NeuroCure Cluster of Excellence, 10117 Berlin, Germany
| | - Martin Booth
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
| | - Na Ji
- Department of Physics, Department of Molecular & Cellular Biology, University of California, Berkeley, CA 94720, USA
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Zheng T, Liversage AR, Tehrani KF, Call JA, Kner PA, Mortensen LJ. Imaging mitochondria through bone in live mice using two-photon fluorescence microscopy with adaptive optics. FRONTIERS IN NEUROIMAGING 2023; 2:959601. [PMID: 37554651 PMCID: PMC10406258 DOI: 10.3389/fnimg.2023.959601] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 01/09/2023] [Indexed: 08/10/2023]
Abstract
INTRODUCTION Mitochondria are extremely important organelles in the regulation of bone marrow and brain activity. However, live imaging of these subcellular features with high resolution in scattering tissues like brain or bone has proven challenging. METHODS In this study, we developed a two-photon fluorescence microscope with adaptive optics (TPFM-AO) for high-resolution imaging, which uses a home-built Shack-Hartmann wavefront sensor (SHWFS) to correct system aberrations and a sensorless approach for correcting low order tissue aberrations. RESULTS Using AO increases the fluorescence intensity of the point spread function (PSF) and achieves fast imaging of subcellular organelles with 400 nm resolution through 85 μm of highly scattering tissue. We achieved ~1.55×, ~3.58×, and ~1.77× intensity increases using AO, and a reduction of the PSF width by ~0.83×, ~0.74×, and ~0.9× at the depths of 0, 50 μm and 85 μm in living mouse bone marrow respectively, allowing us to characterize mitochondrial health and the survival of functioning cells with a field of view of 67.5× 67.5 μm. We also investigate the role of initial signal and background levels in sample correction quality by varying the laser power and camera exposure time and develop an intensity-based criteria for sample correction. DISCUSSION This study demonstrates a promising tool for imaging of mitochondria and other organelles in optically distorting biological environments, which could facilitate the study of a variety of diseases connected to mitochondrial morphology and activity in a range of biological tissues.
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Affiliation(s)
- Tianyi Zheng
- School of Electrical and Computer Engineering, University of Georgia, Athens, GA, United States
| | - Adrian R. Liversage
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, GA, United States
| | - Kayvan F. Tehrani
- Biophotonics Imaging Laboratory, The University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Jarrod A. Call
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA, United States
| | - Peter A. Kner
- School of Electrical and Computer Engineering, University of Georgia, Athens, GA, United States
| | - Luke J. Mortensen
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, GA, United States
- Regenerative Bioscience Center, Rhodes Center for ADS, University of Georgia, Athens, GA, United States
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Yao P, Liu R, Broginni T, Thunemann M, Kleinfeld D. Guide to the construction and use of an adaptive optics two-photon microscope with direct wavefront sensing. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.24.525307. [PMID: 36747816 PMCID: PMC9900836 DOI: 10.1101/2023.01.24.525307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Two-photon microscopy, combined with appropriate optical labeling, has enabled the study of structure and function throughout nervous systems. This methodology enables, for example, the measurement and tracking of sub-micrometer structures within brain cells, the spatio-temporal mapping of spikes in individual neurons, and the spatio-temporal mapping of transmitter release in individual synapses. Yet the spatial resolution of two-photon microscopy rapidly degrades as imaging is attempted at depths more than a few scattering lengths into tissue, i.e., below the superficial layers that constitute the top 300 to 400 µm of neocortex. To obviate this limitation, we measure the wavefront at the focus of the excitation beam and utilize adaptive optics that alters the incident wavefront to achieve an improved focal volume. We describe the constructions, calibration, and operation of a two-photon microscopy that incorporates adaptive optics to restore diffraction-limited resolution throughout the nearly 900 µm depth of mouse cortex. Our realization utilizes a guide star formed by excitation of red-shifted dye within the blood serum to directly measure the wavefront. We incorporate predominantly commercial optical, optomechanical, mechanical, and electronic components; computer aided design models of the exceptional custom components are supplied. The design is modular and allows for expanded imaging and optical excitation capabilities. We demonstrate our methodology in mouse neocortex by imaging the morphology of somatostatin-expressing neurons at 700 µm beneath the pia, calcium dynamics of layer 5b projection neurons, and glutamate transmission to L4 neurons.
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Malivert M, Harms F, Veilly C, Legrand J, Li Z, Bayer E, Choquet D, Ducros M. Active image optimization for lattice light sheet microscopy in thick samples. BIOMEDICAL OPTICS EXPRESS 2022; 13:6211-6228. [PMID: 36589592 PMCID: PMC9774867 DOI: 10.1364/boe.471757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/09/2022] [Accepted: 09/14/2022] [Indexed: 05/02/2023]
Abstract
Lattice light-sheet microscopy (LLSM) is a very efficient technique for high resolution 3D imaging of dynamic phenomena in living biological samples. However, LLSM imaging remains limited in depth due to optical aberrations caused by sample-based refractive index mismatch. Here, we propose a simple and low-cost active image optimization (AIO) method to recover high resolution imaging inside thick biological samples. AIO is based on (1) a light-sheet autofocus step (AF) followed by (2) an adaptive optics image-based optimization. We determine the optimum AIO parameters to provide a fast, precise and robust aberration correction on biological samples. Finally, we demonstrate the performances of our approach on sub-micrometric structures in brain slices and plant roots.
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Affiliation(s)
- Maxime Malivert
- Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center (BIC), UAR 3420, US 4, F-33000 Bordeaux, France
- Imagine Optic, F-91400 Orsay, France
| | | | | | | | - Ziqiang Li
- Université de Bordeaux, CNRS, Laboratory of Membrane Biogenesis (LBM), UMR 5200, F-33140 Villenave d’Ornon, France
| | - Emmanuelle Bayer
- Université de Bordeaux, CNRS, Laboratory of Membrane Biogenesis (LBM), UMR 5200, F-33140 Villenave d’Ornon, France
| | - Daniel Choquet
- Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center (BIC), UAR 3420, US 4, F-33000 Bordeaux, France
- Université de Bordeaux, CNRS, Interdisciplinary Institute for Neuroscience (IINS), UMR 5297, F-33000 Bordeaux, France
| | - Mathieu Ducros
- Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center (BIC), UAR 3420, US 4, F-33000 Bordeaux, France
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Yoon S, Cheon SY, Park S, Lee D, Lee Y, Han S, Kim M, Koo H. Recent advances in optical imaging through deep tissue: imaging probes and techniques. Biomater Res 2022; 26:57. [PMID: 36273205 PMCID: PMC9587606 DOI: 10.1186/s40824-022-00303-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 09/22/2022] [Indexed: 12/04/2022] Open
Abstract
Optical imaging has been essential for scientific observations to date, however its biomedical applications has been restricted due to its poor penetration through tissues. In living tissue, signal attenuation and limited imaging depth caused by the wave distortion occur because of scattering and absorption of light by various molecules including hemoglobin, pigments, and water. To overcome this, methodologies have been proposed in the various fields, which can be mainly categorized into two stategies: developing new imaging probes and optical techniques. For example, imaging probes with long wavelength like NIR-II region are advantageous in tissue penetration. Bioluminescence and chemiluminescence can generate light without excitation, minimizing background signals. Afterglow imaging also has high a signal-to-background ratio because excitation light is off during imaging. Methodologies of adaptive optics (AO) and studies of complex media have been established and have produced various techniques such as direct wavefront sensing to rapidly measure and correct the wave distortion and indirect wavefront sensing involving modal and zonal methods to correct complex aberrations. Matrix-based approaches have been used to correct the high-order optical modes by numerical post-processing without any hardware feedback. These newly developed imaging probes and optical techniques enable successful optical imaging through deep tissue. In this review, we discuss recent advances for multi-scale optical imaging within deep tissue, which can provide reseachers multi-disciplinary understanding and broad perspectives in diverse fields including biophotonics for the purpose of translational medicine and convergence science.
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Affiliation(s)
- Seokchan Yoon
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan, 50612, Republic of Korea
| | - Seo Young Cheon
- Department of Medical Life Sciences and Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Sangjun Park
- Department of Medical Life Sciences and Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Donghyun Lee
- Department of Medical Life Sciences and Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Yeeun Lee
- Department of Medical Life Sciences and Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Seokyoung Han
- Department of Mechanical Engineering, University of Louisville, Louisville, KY, 40208, USA
| | - Moonseok Kim
- Department of Medical Life Sciences and Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
| | - Heebeom Koo
- Department of Medical Life Sciences and Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea. .,Catholic Photomedicine Research Institute, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
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Tong G, Luzgin A, Xia J, Xu L, Zhang H, Dong C, Wu Z, Wu J, Zhang Y, Qin P. Improved photoacoustic images via wavefront shaping modulation based on the scattering structure. OPTICS EXPRESS 2022; 30:36489-36499. [PMID: 36258576 DOI: 10.1364/oe.470330] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/04/2022] [Indexed: 06/16/2023]
Abstract
Multispectral optoacoustic tomography (MSOT) has become the dominant technical solution for photoacoustic imaging (PAI). However, the laser source of fiber output in the current MSOT method is typically a TEM00 Gaussian beam, which is prone to artifacts and incomplete due to the uneven distribution of the irradiated light intensity. Here, we propose a novel method to improve the quality of photoacoustic image reconstruction by modulating the wavefront shaping of the incident laser beam based on the designed scattering structure. In the experiment, we add the designed scattering structure to the current hemispherical photoacoustic transducer array device. Through experiments and simulations, we investigate and compare the effects of different scattering structures on laser intensity modulation. The results show that an ED1-C20 diffusion structure with a scattering angle of 20 degrees has the most effective modulation of the beam intensity distribution. And we choose gold nanoparticles of 50-100 nanometers (nm) diameters and index finger capillary vessels respectively as the medium of PAI. We obtain the highest ratio of PAI area increases of gold nanoparticles and index finger to devices compare without scattering structure is 29.69% and 634.94%, respectively. Experimental results demonstrate that our method is significantly higher quality than traditional methods, which has great potential for theoretical application in medical PAI.
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Deng K, Wang X, Cai C, Cui M, Zuo H, Luo J, Ma C. Multi-segmented feature coupling for jointly reconstructing initial pressure and speed of sound in photoacoustic computed tomography. JOURNAL OF BIOMEDICAL OPTICS 2022; 27:076001. [PMID: 35778781 PMCID: PMC9247326 DOI: 10.1117/1.jbo.27.7.076001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 04/22/2022] [Indexed: 06/15/2023]
Abstract
SIGNIFICANCE Photoacoustic computed tomography (PACT) is a fast-growing imaging modality. In PACT, the image quality is degraded due to the unknown distribution of the speed of sound (SoS). Emerging initial pressure (IP) and SoS joint-reconstruction methods promise reduced artifacts in PACT. However, previous joint-reconstruction methods have some deficiencies. A more effective method has promising prospects in preclinical applications. AIM We propose a multi-segmented feature coupling (MSFC) method for SoS-IP joint reconstruction in PACT. APPROACH In the proposed method, the ultrasound detectors were divided into multiple sub-arrays with each sub-array and its opposite counterpart considered to be a pair. The delay and sum algorithm was then used to reconstruct two images based on a subarray pair and estimated a direction-specific SoS, based on image correlation and the orientation of the subarrays. Once the data generated by all pairs of subarrays were processed, an image that was optimized in terms of minimal feature splitting in all directions was generated. Further, based on the direction-specific SoS, a model-based method was used to directly reconstruct the SoS distribution. RESULTS Both phantom and animal experiments demonstrated feasibility and showed promising results compared with conventional methods, with less splitting and blurring and fewer distortions. CONCLUSIONS The developed MSFC method shows promising results for both IP and SoS reconstruction. The MSFC method will help to optimize the image quality of PACT in clinical applications.
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Affiliation(s)
- Kexin Deng
- Tsinghua University, School of Medicine, Department of Biomedical Engineering, Beijing, China
| | - Xuanhao Wang
- Tsinghua University, Department of Electronic Engineering, Beijing, China
| | - Chuangjian Cai
- Tsinghua University, School of Medicine, Department of Biomedical Engineering, Beijing, China
| | - Manxiu Cui
- Tsinghua University, Department of Electronic Engineering, Beijing, China
| | - Hongzhi Zuo
- Tsinghua University, Department of Electronic Engineering, Beijing, China
| | - Jianwen Luo
- Tsinghua University, School of Medicine, Department of Biomedical Engineering, Beijing, China
| | - Cheng Ma
- Tsinghua University, Department of Electronic Engineering, Beijing, China
- Tsinghua University, Institute for Precision Healthcare, Beijing, China
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12
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Abdelfattah AS, Ahuja S, Akkin T, Allu SR, Brake J, Boas DA, Buckley EM, Campbell RE, Chen AI, Cheng X, Čižmár T, Costantini I, De Vittorio M, Devor A, Doran PR, El Khatib M, Emiliani V, Fomin-Thunemann N, Fainman Y, Fernandez-Alfonso T, Ferri CGL, Gilad A, Han X, Harris A, Hillman EMC, Hochgeschwender U, Holt MG, Ji N, Kılıç K, Lake EMR, Li L, Li T, Mächler P, Miller EW, Mesquita RC, Nadella KMNS, Nägerl UV, Nasu Y, Nimmerjahn A, Ondráčková P, Pavone FS, Perez Campos C, Peterka DS, Pisano F, Pisanello F, Puppo F, Sabatini BL, Sadegh S, Sakadzic S, Shoham S, Shroff SN, Silver RA, Sims RR, Smith SL, Srinivasan VJ, Thunemann M, Tian L, Tian L, Troxler T, Valera A, Vaziri A, Vinogradov SA, Vitale F, Wang LV, Uhlířová H, Xu C, Yang C, Yang MH, Yellen G, Yizhar O, Zhao Y. Neurophotonic tools for microscopic measurements and manipulation: status report. NEUROPHOTONICS 2022; 9:013001. [PMID: 35493335 PMCID: PMC9047450 DOI: 10.1117/1.nph.9.s1.013001] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Neurophotonics was launched in 2014 coinciding with the launch of the BRAIN Initiative focused on development of technologies for advancement of neuroscience. For the last seven years, Neurophotonics' agenda has been well aligned with this focus on neurotechnologies featuring new optical methods and tools applicable to brain studies. While the BRAIN Initiative 2.0 is pivoting towards applications of these novel tools in the quest to understand the brain, this status report reviews an extensive and diverse toolkit of novel methods to explore brain function that have emerged from the BRAIN Initiative and related large-scale efforts for measurement and manipulation of brain structure and function. Here, we focus on neurophotonic tools mostly applicable to animal studies. A companion report, scheduled to appear later this year, will cover diffuse optical imaging methods applicable to noninvasive human studies. For each domain, we outline the current state-of-the-art of the respective technologies, identify the areas where innovation is needed, and provide an outlook for the future directions.
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Affiliation(s)
- Ahmed S. Abdelfattah
- Brown University, Department of Neuroscience, Providence, Rhode Island, United States
| | - Sapna Ahuja
- University of Pennsylvania, Perelman School of Medicine, Department of Biochemistry and Biophysics, Philadelphia, Pennsylvania, United States
- University of Pennsylvania, School of Arts and Sciences, Department of Chemistry, Philadelphia, Pennsylvania, United States
| | - Taner Akkin
- University of Minnesota, Department of Biomedical Engineering, Minneapolis, Minnesota, United States
| | - Srinivasa Rao Allu
- University of Pennsylvania, Perelman School of Medicine, Department of Biochemistry and Biophysics, Philadelphia, Pennsylvania, United States
- University of Pennsylvania, School of Arts and Sciences, Department of Chemistry, Philadelphia, Pennsylvania, United States
| | - Joshua Brake
- Harvey Mudd College, Department of Engineering, Claremont, California, United States
| | - David A. Boas
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Erin M. Buckley
- Georgia Institute of Technology and Emory University, Wallace H. Coulter Department of Biomedical Engineering, Atlanta, Georgia, United States
- Emory University, Department of Pediatrics, Atlanta, Georgia, United States
| | - Robert E. Campbell
- University of Tokyo, Department of Chemistry, Tokyo, Japan
- University of Alberta, Department of Chemistry, Edmonton, Alberta, Canada
| | - Anderson I. Chen
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Xiaojun Cheng
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Tomáš Čižmár
- Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czech Republic
| | - Irene Costantini
- University of Florence, European Laboratory for Non-Linear Spectroscopy, Department of Biology, Florence, Italy
- National Institute of Optics, National Research Council, Rome, Italy
| | - Massimo De Vittorio
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano, Italy
| | - Anna Devor
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
- Massachusetts General Hospital, Harvard Medical School, Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, Massachusetts, United States
| | - Patrick R. Doran
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Mirna El Khatib
- University of Pennsylvania, Perelman School of Medicine, Department of Biochemistry and Biophysics, Philadelphia, Pennsylvania, United States
- University of Pennsylvania, School of Arts and Sciences, Department of Chemistry, Philadelphia, Pennsylvania, United States
| | | | - Natalie Fomin-Thunemann
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Yeshaiahu Fainman
- University of California San Diego, Department of Electrical and Computer Engineering, La Jolla, California, United States
| | - Tomas Fernandez-Alfonso
- University College London, Department of Neuroscience, Physiology and Pharmacology, London, United Kingdom
| | - Christopher G. L. Ferri
- University of California San Diego, Departments of Neurosciences, La Jolla, California, United States
| | - Ariel Gilad
- The Hebrew University of Jerusalem, Institute for Medical Research Israel–Canada, Department of Medical Neurobiology, Faculty of Medicine, Jerusalem, Israel
| | - Xue Han
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Andrew Harris
- Weizmann Institute of Science, Department of Brain Sciences, Rehovot, Israel
| | | | - Ute Hochgeschwender
- Central Michigan University, Department of Neuroscience, Mount Pleasant, Michigan, United States
| | - Matthew G. Holt
- University of Porto, Instituto de Investigação e Inovação em Saúde (i3S), Porto, Portugal
| | - Na Ji
- University of California Berkeley, Department of Physics, Berkeley, California, United States
| | - Kıvılcım Kılıç
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Evelyn M. R. Lake
- Yale School of Medicine, Department of Radiology and Biomedical Imaging, New Haven, Connecticut, United States
| | - Lei Li
- California Institute of Technology, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, Pasadena, California, United States
| | - Tianqi Li
- University of Minnesota, Department of Biomedical Engineering, Minneapolis, Minnesota, United States
| | - Philipp Mächler
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Evan W. Miller
- University of California Berkeley, Departments of Chemistry and Molecular & Cell Biology and Helen Wills Neuroscience Institute, Berkeley, California, United States
| | | | | | - U. Valentin Nägerl
- Interdisciplinary Institute for Neuroscience University of Bordeaux & CNRS, Bordeaux, France
| | - Yusuke Nasu
- University of Tokyo, Department of Chemistry, Tokyo, Japan
| | - Axel Nimmerjahn
- Salk Institute for Biological Studies, Waitt Advanced Biophotonics Center, La Jolla, California, United States
| | - Petra Ondráčková
- Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czech Republic
| | - Francesco S. Pavone
- National Institute of Optics, National Research Council, Rome, Italy
- University of Florence, European Laboratory for Non-Linear Spectroscopy, Department of Physics, Florence, Italy
| | - Citlali Perez Campos
- Columbia University, Zuckerman Mind Brain Behavior Institute, New York, United States
| | - Darcy S. Peterka
- Columbia University, Zuckerman Mind Brain Behavior Institute, New York, United States
| | - Filippo Pisano
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano, Italy
| | - Ferruccio Pisanello
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano, Italy
| | - Francesca Puppo
- University of California San Diego, Departments of Neurosciences, La Jolla, California, United States
| | - Bernardo L. Sabatini
- Harvard Medical School, Howard Hughes Medical Institute, Department of Neurobiology, Boston, Massachusetts, United States
| | - Sanaz Sadegh
- University of California San Diego, Departments of Neurosciences, La Jolla, California, United States
| | - Sava Sakadzic
- Massachusetts General Hospital, Harvard Medical School, Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, Massachusetts, United States
| | - Shy Shoham
- New York University Grossman School of Medicine, Tech4Health and Neuroscience Institutes, New York, New York, United States
| | - Sanaya N. Shroff
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - R. Angus Silver
- University College London, Department of Neuroscience, Physiology and Pharmacology, London, United Kingdom
| | - Ruth R. Sims
- Sorbonne University, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Spencer L. Smith
- University of California Santa Barbara, Department of Electrical and Computer Engineering, Santa Barbara, California, United States
| | - Vivek J. Srinivasan
- New York University Langone Health, Departments of Ophthalmology and Radiology, New York, New York, United States
| | - Martin Thunemann
- Boston University, Department of Biomedical Engineering, Boston, Massachusetts, United States
| | - Lei Tian
- Boston University, Departments of Electrical Engineering and Biomedical Engineering, Boston, Massachusetts, United States
| | - Lin Tian
- University of California Davis, Department of Biochemistry and Molecular Medicine, Davis, California, United States
| | - Thomas Troxler
- University of Pennsylvania, Perelman School of Medicine, Department of Biochemistry and Biophysics, Philadelphia, Pennsylvania, United States
- University of Pennsylvania, School of Arts and Sciences, Department of Chemistry, Philadelphia, Pennsylvania, United States
| | - Antoine Valera
- University College London, Department of Neuroscience, Physiology and Pharmacology, London, United Kingdom
| | - Alipasha Vaziri
- Rockefeller University, Laboratory of Neurotechnology and Biophysics, New York, New York, United States
- The Rockefeller University, The Kavli Neural Systems Institute, New York, New York, United States
| | - Sergei A. Vinogradov
- University of Pennsylvania, Perelman School of Medicine, Department of Biochemistry and Biophysics, Philadelphia, Pennsylvania, United States
- University of Pennsylvania, School of Arts and Sciences, Department of Chemistry, Philadelphia, Pennsylvania, United States
| | - Flavia Vitale
- Center for Neuroengineering and Therapeutics, Departments of Neurology, Bioengineering, Physical Medicine and Rehabilitation, Philadelphia, Pennsylvania, United States
| | - Lihong V. Wang
- California Institute of Technology, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, Pasadena, California, United States
| | - Hana Uhlířová
- Institute of Scientific Instruments of the Czech Academy of Sciences, Brno, Czech Republic
| | - Chris Xu
- Cornell University, School of Applied and Engineering Physics, Ithaca, New York, United States
| | - Changhuei Yang
- California Institute of Technology, Departments of Electrical Engineering, Bioengineering and Medical Engineering, Pasadena, California, United States
| | - Mu-Han Yang
- University of California San Diego, Department of Electrical and Computer Engineering, La Jolla, California, United States
| | - Gary Yellen
- Harvard Medical School, Department of Neurobiology, Boston, Massachusetts, United States
| | - Ofer Yizhar
- Weizmann Institute of Science, Department of Brain Sciences, Rehovot, Israel
| | - Yongxin Zhao
- Carnegie Mellon University, Department of Biological Sciences, Pittsburgh, Pennsylvania, United States
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13
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May MA, Barré N, Kummer KK, Kress M, Ritsch-Marte M, Jesacher A. Fast holographic scattering compensation for deep tissue biological imaging. Nat Commun 2021; 12:4340. [PMID: 34267207 PMCID: PMC8282637 DOI: 10.1038/s41467-021-24666-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 06/11/2021] [Indexed: 12/03/2022] Open
Abstract
Scattering in biological tissues is a major barrier for in vivo optical imaging of all but the most superficial structures. Progress toward overcoming the distortions caused by scattering in turbid media has been made by shaping the excitation wavefront to redirect power into a single point in the imaging plane. However, fast, non-invasive determination of the required wavefront compensation remains challenging. Here, we introduce a quickly converging algorithm for non-invasive scattering compensation, termed DASH, in which holographic phase stepping interferometry enables new phase information to be updated after each measurement. This leads to rapid improvement of the wavefront correction, forming a focus after just one measurement iteration and achieving an order of magnitude higher signal enhancement at this stage than the previous state-of-the-art. Using DASH, we demonstrate two-photon fluorescence imaging of microglia cells in highly turbid mouse hippocampal tissue down to a depth of 530 μm.
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Affiliation(s)
- Molly A May
- Institute of Biomedical Physics, Medical University of Innsbruck, Innsbruck, Austria.
| | - Nicolas Barré
- Institute of Biomedical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Kai K Kummer
- Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela Kress
- Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Monika Ritsch-Marte
- Institute of Biomedical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Alexander Jesacher
- Institute of Biomedical Physics, Medical University of Innsbruck, Innsbruck, Austria
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14
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Lin R, Kipreos ET, Zhu J, Khang CH, Kner P. Subcellular three-dimensional imaging deep through multicellular thick samples by structured illumination microscopy and adaptive optics. Nat Commun 2021; 12:3148. [PMID: 34035309 PMCID: PMC8149693 DOI: 10.1038/s41467-021-23449-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 04/27/2021] [Indexed: 01/11/2023] Open
Abstract
Structured Illumination Microscopy enables live imaging with sub-diffraction resolution. Unfortunately, optical aberrations can lead to loss of resolution and artifacts in Structured Illumination Microscopy rendering the technique unusable in samples thicker than a single cell. Here we report on the combination of Adaptive Optics and Structured Illumination Microscopy enabling imaging with 150 nm lateral and 570 nm axial resolution at a depth of 80 µm through Caenorhabditis elegans. We demonstrate that Adaptive Optics improves the three-dimensional resolution, especially along the axial direction, and reduces artifacts, successfully realizing 3D-Structured Illumination Microscopy in a variety of biological samples.
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Affiliation(s)
- Ruizhe Lin
- School of Electrical and Computer Engineering, University of Georgia, Athens, GA, USA
| | - Edward T Kipreos
- Department of Cellular Biology, University of Georgia, Athens, GA, USA
| | - Jie Zhu
- Department of Plant Biology, University of Georgia, Athens, GA, USA
- Department of Plant Pathology, University of California, Davis, CA, USA
| | - Chang Hyun Khang
- Department of Plant Biology, University of Georgia, Athens, GA, USA
| | - Peter Kner
- School of Electrical and Computer Engineering, University of Georgia, Athens, GA, USA.
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15
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Velasco MGM, Zhang M, Antonello J, Yuan P, Allgeyer ES, May D, M’Saad O, Kidd P, Barentine AES, Greco V, Grutzendler J, Booth MJ, Bewersdorf J. 3D super-resolution deep-tissue imaging in living mice. OPTICA 2021; 8:442-450. [PMID: 34239948 PMCID: PMC8243577 DOI: 10.1364/optica.416841] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 05/08/2023]
Abstract
Stimulated emission depletion (STED) microscopy enables the three-dimensional (3D) visualization of dynamic nanoscale structures in living cells, offering unique insights into their organization. However, 3D-STED imaging deep inside biological tissue is obstructed by optical aberrations and light scattering. We present a STED system that overcomes these challenges. Through the combination of two-photon excitation, adaptive optics, red-emitting organic dyes, and a long-working-distance water-immersion objective lens, our system achieves aberration-corrected 3D super-resolution imaging, which we demonstrate 164 µm deep in fixed mouse brain tissue and 76 µm deep in the brain of a living mouse.
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Affiliation(s)
- Mary Grace M. Velasco
- Department of Biomedical Engineering, Yale School of Engineering & Applied Science, New Haven, Connecticut 06520, USA
- Department of Cell Biology, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Mengyang Zhang
- Interdepartmental Neuroscience Program, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Neuroscience, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Jacopo Antonello
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
| | - Peng Yuan
- Department of Neuroscience, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Current Address: Department of Biology, Stanford University, Stanford, California 94304, USA
| | - Edward S. Allgeyer
- Department of Cell Biology, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Current Address: The Gurdon Institute, University of Cambridge, Cambridge CB21QN, UK
| | - Dennis May
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Ons M’Saad
- Department of Biomedical Engineering, Yale School of Engineering & Applied Science, New Haven, Connecticut 06520, USA
- Department of Cell Biology, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Phylicia Kidd
- Department of Cell Biology, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Andrew E. S. Barentine
- Department of Biomedical Engineering, Yale School of Engineering & Applied Science, New Haven, Connecticut 06520, USA
- Department of Cell Biology, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Valentina Greco
- Department of Cell Biology, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Dermatology, Yale Stem Cell Center, Yale Cancer Center, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Jaime Grutzendler
- Interdepartmental Neuroscience Program, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Neuroscience, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Martin J. Booth
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK
| | - Joerg Bewersdorf
- Department of Biomedical Engineering, Yale School of Engineering & Applied Science, New Haven, Connecticut 06520, USA
- Department of Cell Biology, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Corresponding author:
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16
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Cui M, Zuo H, Wang X, Deng K, Luo J, Ma C. Adaptive photoacoustic computed tomography. PHOTOACOUSTICS 2021; 21:100223. [PMID: 33364162 PMCID: PMC7750694 DOI: 10.1016/j.pacs.2020.100223] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/05/2020] [Accepted: 11/12/2020] [Indexed: 05/18/2023]
Abstract
For many optical imaging modalities, image qualities are inevitably degraded by wavefront distortions caused by varying light speed. In optical microscopy and astronomy, adaptive optics (AO) has long been applied to compensate for such unwanted aberrations. Photoacoustic computed tomography (PACT), despite relying on the ultrasonic wave for image formation, suffers from the acoustic version of the same problem. However, this problem has traditionally been regarded as an inverse problem of jointly reconstructing both the initial pressure and the sound speed distributions. In this work, we proposed a method similar to indirect wavefront sensing in AO. We argued that wavefront distortions can be extracted and corrected by a frequency domain analysis of local images. In addition to an adaptively reconstructed aberration-free image, the speed of sound map can be subsequently estimated. We demonstrated the method by in silico, phantom, and in vivo experiments.
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Affiliation(s)
- Manxiu Cui
- Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China
| | - Hongzhi Zuo
- Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China
| | - Xunahao Wang
- Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China
| | - Kexin Deng
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Jianwen Luo
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Cheng Ma
- Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China
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17
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Yoon S, Lee H, Hong JH, Lim YS, Choi W. Laser scanning reflection-matrix microscopy for aberration-free imaging through intact mouse skull. Nat Commun 2020; 11:5721. [PMID: 33184297 PMCID: PMC7665219 DOI: 10.1038/s41467-020-19550-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 10/14/2020] [Indexed: 11/09/2022] Open
Abstract
A mouse skull is a barrier for high-resolution optical imaging because its thick and inhomogeneous internal structures induce complex aberrations varying drastically from position to position. Invasive procedures creating either thinned-skull or open-skull windows are often required for the microscopic imaging of brain tissues underneath. Here, we propose a label-free imaging modality termed laser scanning reflection-matrix microscopy for recording the amplitude and phase maps of reflected waves at non-confocal points as well as confocal points. The proposed method enables us to find and computationally correct up to 10,000 angular modes of aberrations varying at every 10 × 10 µm2 patch in the sample plane. We realized reflectance imaging of myelinated axons in vivo underneath an intact mouse skull, with an ideal diffraction-limited spatial resolution of 450 nm. Furthermore, we demonstrated through-skull two-photon fluorescence imaging of neuronal dendrites and their spines by physically correcting the aberrations identified from the reflection matrix.
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Affiliation(s)
- Seokchan Yoon
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul, 02841, Korea.,Department of Physics, Korea University, Seoul, 02855, Korea
| | - Hojun Lee
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul, 02841, Korea.,Department of Physics, Korea University, Seoul, 02855, Korea
| | - Jin Hee Hong
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul, 02841, Korea.,Department of Physics, Korea University, Seoul, 02855, Korea
| | - Yong-Sik Lim
- Department of Nano Science and Mechanical Engineering and Nanotechnology Research Center, Konkuk University, Chungbuk, Korea
| | - Wonshik Choi
- Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul, 02841, Korea. .,Department of Physics, Korea University, Seoul, 02855, Korea.
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18
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Qin Z, Chen C, He S, Wang Y, Tam KF, Ip NY, Qu JY. Adaptive optics two-photon endomicroscopy enables deep-brain imaging at synaptic resolution over large volumes. SCIENCE ADVANCES 2020; 6:6/40/eabc6521. [PMID: 32998883 PMCID: PMC7527232 DOI: 10.1126/sciadv.abc6521] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/11/2020] [Indexed: 05/02/2023]
Abstract
Optical deep-brain imaging in vivo at high resolution has remained a great challenge over the decades. Two-photon endomicroscopy provides a minimally invasive approach to image buried brain structures, once it is integrated with a gradient refractive index (GRIN) lens embedded in the brain. However, its imaging resolution and field of view are compromised by the intrinsic aberrations of the GRIN lens. Here, we develop a two-photon endomicroscopy by adding adaptive optics based on direct wavefront sensing, which enables recovery of diffraction-limited resolution in deep-brain imaging. A new precompensation strategy plays a critical role to correct aberrations over large volumes and achieve rapid random-access multiplane imaging. We investigate the neuronal plasticity in the hippocampus, a critical deep brain structure, and reveal the relationship between the somatic and dendritic activity of pyramidal neurons.
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Affiliation(s)
- Zhongya Qin
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Center of Systems Biology and Human Health, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Congping Chen
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Center of Systems Biology and Human Health, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Sicong He
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Center of Systems Biology and Human Health, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
| | - Ye Wang
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P.R. China
| | - Kam Fai Tam
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P.R. China
| | - Nancy Y Ip
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China.
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Molecular Neuroscience Center, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P.R. China
| | - Jianan Y Qu
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China.
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
- Center of Systems Biology and Human Health, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China
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19
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Cumming BP, Gu M. Direct determination of aberration functions in microscopy by an artificial neural network. OPTICS EXPRESS 2020; 28:14511-14521. [PMID: 32403490 DOI: 10.1364/oe.390856] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Adaptive optics relies on the fast and accurate determination of aberrations but is often hindered by wavefront sensor limitations or lengthy optimization algorithms. Deep learning by artificial neural networks has recently been shown to provide determination of aberration coefficients from various microscope metrics. Here we numerically investigate the direct determination of aberration functions in the pupil plane of a high numerical aperture microscope using an artificial neural network. We show that an aberration function can be determined from fluorescent guide stars and used to improve the Strehl ratio without the need for reconstruction from Zernike polynomial coefficients.
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20
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Qin Z, He S, Yang C, Yung JSY, Chen C, Leung CKS, Liu K, Qu JY. Adaptive optics two-photon microscopy enables near-diffraction-limited and functional retinal imaging in vivo. LIGHT, SCIENCE & APPLICATIONS 2020; 9:79. [PMID: 32411364 PMCID: PMC7203252 DOI: 10.1038/s41377-020-0317-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/11/2020] [Accepted: 04/15/2020] [Indexed: 05/08/2023]
Abstract
In vivo fundus imaging offers non-invasive access to neuron structures and biochemical processes in the retina. However, optical aberrations of the eye degrade the imaging resolution and prevent visualization of subcellular retinal structures. We developed an adaptive optics two-photon excitation fluorescence microscopy (AO-TPEFM) system to correct ocular aberrations based on a nonlinear fluorescent guide star and achieved subcellular resolution for in vivo fluorescence imaging of the mouse retina. With accurate wavefront sensing and rapid aberration correction, AO-TPEFM permits structural and functional imaging of the mouse retina with submicron resolution. Specifically, simultaneous functional calcium imaging of neuronal somas and dendrites was demonstrated. Moreover, the time-lapse morphological alteration and dynamics of microglia were characterized in a mouse model of retinal disorder. In addition, precise laser axotomy was achieved, and degeneration of retinal nerve fibres was studied. This high-resolution AO-TPEFM is a promising tool for non-invasive retinal imaging and can facilitate the understanding of a variety of eye diseases as well as neurodegenerative disorders in the central nervous system.
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Affiliation(s)
- Zhongya Qin
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Sicong He
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Chao Yang
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jasmine Sum-Yee Yung
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Congping Chen
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | | | - Kai Liu
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Center of Systems Biology and Human Health, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jianan Y. Qu
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Center of Systems Biology and Human Health, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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21
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Li Z, Zhang Q, Chou SW, Newman Z, Turcotte R, Natan R, Dai Q, Isacoff EY, Ji N. Fast widefield imaging of neuronal structure and function with optical sectioning in vivo. SCIENCE ADVANCES 2020; 6:eaaz3870. [PMID: 32494711 PMCID: PMC7209992 DOI: 10.1126/sciadv.aaz3870] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 02/18/2020] [Indexed: 05/19/2023]
Abstract
Optical microscopy, owing to its noninvasiveness and subcellular resolution, enables in vivo visualization of neuronal structure and function in the physiological context. Optical-sectioning structured illumination microscopy (OS-SIM) is a widefield fluorescence imaging technique that uses structured illumination patterns to encode in-focus structures and optically sections 3D samples. However, its application to in vivo imaging has been limited. In this study, we optimized OS-SIM for in vivo neural imaging. We modified OS-SIM reconstruction algorithms to improve signal-to-noise ratio and correct motion-induced artifacts in live samples. Incorporating an adaptive optics (AO) module to OS-SIM, we found that correcting sample-induced optical aberrations was essential for achieving accurate structural and functional characterizations in vivo. With AO OS-SIM, we demonstrated fast, high-resolution in vivo imaging with optical sectioning for structural imaging of mouse cortical neurons and zebrafish larval motor neurons, and functional imaging of quantal synaptic transmission at Drosophila larval neuromuscular junctions.
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Affiliation(s)
- Ziwei Li
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Automation, Tsinghua University, Beijing 100084, China
| | - Qinrong Zhang
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Shih-Wei Chou
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Zachary Newman
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Raphaël Turcotte
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Ryan Natan
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Qionghai Dai
- Department of Automation, Tsinghua University, Beijing 100084, China
| | - Ehud Y. Isacoff
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
- Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, Berkeley, CA 94720, USA
| | - Na Ji
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Corresponding author.
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22
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Advances in adaptive optics-based two-photon fluorescence microscopy for brain imaging. Lasers Med Sci 2019; 35:317-328. [PMID: 31729608 DOI: 10.1007/s10103-019-02908-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/18/2019] [Indexed: 12/20/2022]
Abstract
Deep tissue imaging using two-photon fluorescence (TPF) techniques have revolutionized the optical imaging community by providing in depth molecular information at the single-cell level. These techniques provide structural and functional aspects of mammalian brain at unprecedented depth and resolution. However, wavefront distortions introduced by the optical system as well as the biological sample (tissue) limit the achievable fluorescence signal-to-noise ratio and resolution with penetration depth. In this review, we discuss on the advances in TPF microscopy techniques for in vivo functional imaging and offer guidelines as to which technologies are best suited for different imaging applications with special reference to adaptive optics.
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23
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Morgado Brajones J, Clouvel G, Dovillaire G, Levecq X, Lorenzo C. Highly Sensitive Shack-Hartmann Wavefront Sensor: Application to Non-Transparent Tissue Mimic Imaging with Adaptive Light-Sheet Fluorescence Microscopy. Methods Protoc 2019; 2:mps2030059. [PMID: 31336779 PMCID: PMC6789751 DOI: 10.3390/mps2030059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/25/2019] [Accepted: 07/08/2019] [Indexed: 01/01/2023] Open
Abstract
High-quality in-depth imaging of three-dimensional samples remains a major challenge in modern microscopy. Selective plane illumination microscopy (SPIM) is a widely used technique that enables imaging of living tissues with subcellular resolution. However, scattering, absorption, and optical aberrations limit the depth at which useful imaging can be done. Adaptive optics (AOs) is a method capable of measuring and correcting aberrations in different kinds of fluorescence microscopes, thereby improving the performance of the optical system. We have incorporated a wavefront sensor adaptive optics scheme to SPIM (WAOSPIM) to correct aberrations induced by optically-thick samples, such as multi-cellular tumor spheroids (MCTS). Two-photon fluorescence provides us with a tool to produce a weak non-linear guide star (NGS) in any region of the field of view. The faintness of NGS; however, led us to develop a high-sensitivity Shack–Hartmann wavefront sensor (SHWS). This paper describes this newly developed SHWS and shows the correction capabilities of WAOSPIM using NGS in thick, inhomogeneous samples like MCTS. We report improvements of up to 79% for spatial frequencies corresponding to cellular and subcellular size features.
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24
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Tsogvoo KO, Tsermaa B, Yang BK, Myung-Whun K. Femtosecond two-photon absorption phase change spectroscopy of a ZnSe single crystal. OPTICS LETTERS 2019; 44:2542-2545. [PMID: 31090727 DOI: 10.1364/ol.44.002542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 04/22/2019] [Indexed: 06/09/2023]
Abstract
We measured time- and frequency-resolved phase changes owing to two-photon absorption induced by ultrashort (10 fs) pulses transmitted through a transparent material (ZnSe crystal), using femtosecond two-photon phase change spectroscopy. The maximal phase change was 0.02 rad when a pulse with the energy density of 1.5 nJ was focused with the focus diameter of 100 μm. The maximal phase change occurred when a probe pulse was delayed with respect to a pump pulse by 64 fs. A calculation assuming two-photon absorption by noninteracting atomic gases was consistent with the experimental observations, which supported the observed phase change of the pulse that is due to the two-photon absorption.
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25
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Turcotte R, Liang Y, Tanimoto M, Zhang Q, Li Z, Koyama M, Betzig E, Ji N. Dynamic super-resolution structured illumination imaging in the living brain. Proc Natl Acad Sci U S A 2019; 116:9586-9591. [PMID: 31028150 PMCID: PMC6511017 DOI: 10.1073/pnas.1819965116] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cells in the brain act as components of extended networks. Therefore, to understand neurobiological processes in a physiological context, it is essential to study them in vivo. Super-resolution microscopy has spatial resolution beyond the diffraction limit, thus promising to provide structural and functional insights that are not accessible with conventional microscopy. However, to apply it to in vivo brain imaging, we must address the challenges of 3D imaging in an optically heterogeneous tissue that is constantly in motion. We optimized image acquisition and reconstruction to combat sample motion and applied adaptive optics to correcting sample-induced optical aberrations in super-resolution structured illumination microscopy (SIM) in vivo. We imaged the brains of live zebrafish larvae and mice and observed the dynamics of dendrites and dendritic spines at nanoscale resolution.
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Affiliation(s)
- Raphaël Turcotte
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, VA 20147
- Department of Physics, University of California, Berkeley, CA 94720
| | - Yajie Liang
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, VA 20147
| | - Masashi Tanimoto
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, VA 20147
| | - Qinrong Zhang
- Department of Physics, University of California, Berkeley, CA 94720
| | - Ziwei Li
- Department of Physics, University of California, Berkeley, CA 94720
| | - Minoru Koyama
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, VA 20147
| | - Eric Betzig
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, VA 20147;
- Department of Physics, University of California, Berkeley, CA 94720
- Department of Molecular & Cell Biology, University of California, Berkeley, CA 94720
- Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | - Na Ji
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, VA 20147;
- Department of Physics, University of California, Berkeley, CA 94720
- Department of Molecular & Cell Biology, University of California, Berkeley, CA 94720
- Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
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26
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Collini M, Radaelli F, Sironi L, Ceffa NG, D’Alfonso L, Bouzin M, Chirico G. Adaptive optics microspectrometer for cross-correlation measurement of microfluidic flows. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-15. [PMID: 30816029 PMCID: PMC6987636 DOI: 10.1117/1.jbo.24.2.025004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 12/04/2018] [Indexed: 05/17/2023]
Abstract
Mapping flows in vivo is essential for the investigation of cardiovascular pathologies in animal models. The limitation of optical-based methods, such as space-time cross correlation, is the scattering of light by the connective and fat components and the direct wave front distortion by large inhomogeneities in the tissue. Nonlinear excitation of the sample fluorescence helps us by reducing light scattering in excitation. However, there is still a limitation on the signal-background due to the wave front distortion. We develop a diffractive optical microscope based on a single spatial light modulator (SLM) with no movable parts. We combine the correction of wave front distortions to the cross-correlation analysis of the flow dynamics. We use the SLM to shine arbitrary patterns of spots on the sample, to correct their optical aberrations, to shift the aberration corrected spot array on the sample for the collection of fluorescence images, and to measure flow velocities from the cross-correlation functions computed between couples of spots. The setup and the algorithms are tested on various microfluidic devices. By applying the adaptive optics correction algorithm, it is possible to increase up to 5 times the signal-to-background ratio and to reduce approximately of the same ratio the uncertainty of the flow speed measurement. By working on grids of spots, we can correct different aberrations in different portions of the field of view, a feature that allows for anisoplanatic aberrations correction. Finally, being more efficient in the excitation, we increase the accuracy of the speed measurement by employing a larger number of spots in the grid despite the fact that the two-photon excitation efficiency scales as the fourth power of this number: we achieve a twofold decrease of the uncertainty and a threefold increase of the accuracy in the evaluation of the flow speed.
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Affiliation(s)
- Maddalena Collini
- University of Milano-Bicocca, Department of Physics, Milan, Italy
- University of Milano-Bicocca, Nanomedicine Center, Milan, Italy
- Institute of Applied Sciences and Intelligent Systems, National Research Council of Italy, Pozzuoli, Italy
| | | | - Laura Sironi
- University of Milano-Bicocca, Department of Physics, Milan, Italy
| | - Nicolo G. Ceffa
- University of Milano-Bicocca, Department of Physics, Milan, Italy
| | - Laura D’Alfonso
- University of Milano-Bicocca, Department of Physics, Milan, Italy
| | - Margaux Bouzin
- University of Milano-Bicocca, Department of Physics, Milan, Italy
| | - Giuseppe Chirico
- University of Milano-Bicocca, Department of Physics, Milan, Italy
- University of Milano-Bicocca, Nanomedicine Center, Milan, Italy
- Institute of Applied Sciences and Intelligent Systems, National Research Council of Italy, Pozzuoli, Italy
- Address all correspondence to Giuseppe Chirico, E-mail:
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27
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Bueno JM, Skorsetz M, Bonora S, Artal P. Wavefront correction in two-photon microscopy with a multi-actuator adaptive lens. OPTICS EXPRESS 2018; 26:14278-14287. [PMID: 29877468 DOI: 10.1364/oe.26.014278] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 03/15/2018] [Indexed: 06/08/2023]
Abstract
A multi-actuator adaptive lens (AL) was incorporated into a multi-photon (MP) microscope to improve the quality of images of thick samples. Through a hill-climbing procedure the AL corrected for the specimen-induced aberrations enhancing MP images. The final images hardly differed when two different metrics were used, although the sets of Zernike coefficients were not identical. The optimized MP images acquired with the AL were also compared with those obtained with a liquid-crystal-on-silicon spatial light modulator. Results have shown that both devices lead to similar images, which corroborates the usefulness of this AL for MP imaging.
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28
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Liu TL, Upadhyayula S, Milkie DE, Singh V, Wang K, Swinburne IA, Mosaliganti KR, Collins ZM, Hiscock TW, Shea J, Kohrman AQ, Medwig TN, Dambournet D, Forster R, Cunniff B, Ruan Y, Yashiro H, Scholpp S, Meyerowitz EM, Hockemeyer D, Drubin DG, Martin BL, Matus DQ, Koyama M, Megason SG, Kirchhausen T, Betzig E. Observing the cell in its native state: Imaging subcellular dynamics in multicellular organisms. Science 2018; 360:eaaq1392. [PMID: 29674564 PMCID: PMC6040645 DOI: 10.1126/science.aaq1392] [Citation(s) in RCA: 300] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 02/19/2018] [Indexed: 01/10/2023]
Abstract
True physiological imaging of subcellular dynamics requires studying cells within their parent organisms, where all the environmental cues that drive gene expression, and hence the phenotypes that we actually observe, are present. A complete understanding also requires volumetric imaging of the cell and its surroundings at high spatiotemporal resolution, without inducing undue stress on either. We combined lattice light-sheet microscopy with adaptive optics to achieve, across large multicellular volumes, noninvasive aberration-free imaging of subcellular processes, including endocytosis, organelle remodeling during mitosis, and the migration of axons, immune cells, and metastatic cancer cells in vivo. The technology reveals the phenotypic diversity within cells across different organisms and developmental stages and may offer insights into how cells harness their intrinsic variability to adapt to different physiological environments.
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Affiliation(s)
- Tsung-Li Liu
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Srigokul Upadhyayula
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
- Department of Cell Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, 200 Longwood Avenue, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Daniel E Milkie
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Ved Singh
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Kai Wang
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Ian A Swinburne
- Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Kishore R Mosaliganti
- Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Zach M Collins
- Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Tom W Hiscock
- Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Jamien Shea
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Abraham Q Kohrman
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794-5215, USA
| | - Taylor N Medwig
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794-5215, USA
| | - Daphne Dambournet
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Ryan Forster
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Brian Cunniff
- Department of Cell Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Yuan Ruan
- Howard Hughes Medical Institute and Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Hanako Yashiro
- Howard Hughes Medical Institute and Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Steffen Scholpp
- Living Systems Institute, College of Life and Environmental Sciences, University of Exeter, Exeter EX4 4QD, UK
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - Elliot M Meyerowitz
- Howard Hughes Medical Institute and Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Dirk Hockemeyer
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - David G Drubin
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Benjamin L Martin
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794-5215, USA
| | - David Q Matus
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794-5215, USA
| | - Minoru Koyama
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Sean G Megason
- Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Tom Kirchhausen
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
- Department of Cell Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, 200 Longwood Avenue, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Eric Betzig
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA.
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29
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Rodríguez C, Ji N. Adaptive optical microscopy for neurobiology. Curr Opin Neurobiol 2018; 50:83-91. [PMID: 29427808 DOI: 10.1016/j.conb.2018.01.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/12/2017] [Accepted: 01/19/2018] [Indexed: 12/11/2022]
Abstract
With the ability to correct for the aberrations introduced by biological specimens, adaptive optics-a method originally developed for astronomical telescopes-has been applied to optical microscopy to recover diffraction-limited imaging performance deep within living tissue. In particular, this technology has been used to improve image quality and provide a more accurate characterization of both structure and function of neurons in a variety of living organisms. Among its many highlights, adaptive optical microscopy has made it possible to image large volumes with diffraction-limited resolution in zebrafish larval brains, to resolve dendritic spines over 600μm deep in the mouse brain, and to more accurately characterize the orientation tuning properties of thalamic boutons in the primary visual cortex of awake mice.
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Affiliation(s)
- Cristina Rodríguez
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Na Ji
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA; Department of Physics, Department of Molecular & Cellular Biology, University of California, Berkeley, CA 94720, USA.
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30
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Turcotte R, Liang Y, Ji N. Adaptive optical versus spherical aberration corrections for in vivo brain imaging. BIOMEDICAL OPTICS EXPRESS 2017; 8:3891-3902. [PMID: 28856058 PMCID: PMC5560849 DOI: 10.1364/boe.8.003891] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/25/2017] [Accepted: 07/25/2017] [Indexed: 05/21/2023]
Abstract
Adjusting the objective correction collar is a widely used approach to correct spherical aberrations (SA) in optical microscopy. In this work, we characterized and compared its performance with adaptive optics in the context of in vivo brain imaging with two-photon fluorescence microscopy. We found that the presence of sample tilt had a deleterious effect on the performance of SA-only correction. At large tilt angles, adjusting the correction collar even worsened image quality. In contrast, adaptive optical correction always recovered optimal imaging performance regardless of sample tilt. The extent of improvement with adaptive optics was dependent on object size, with smaller objects having larger relative gains in signal intensity and image sharpness. These observations translate into a superior performance of adaptive optics for structural and functional brain imaging applications in vivo, as we confirmed experimentally.
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31
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Gallagher J, Delon A, Moreau P, Wang I. Optimizing the metric in sensorless adaptive optical microscopy with fluorescence fluctuations. OPTICS EXPRESS 2017; 25:15558-15571. [PMID: 28788978 DOI: 10.1364/oe.25.015558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Adaptive optics (AO) strategies using optimization-based, sensorless approaches are widely used, especially for microscopy applications. To converge rapidly to the best correction, such approaches require that a quality metric and a set of modes be chosen optimally. Fluorescence fluctuations microscopy, a family of methods that provides quantitative measurements of molecular concentration and mobility in living specimen, is in particular need of adaptive optics, since its results can be strongly biased by optical aberrations. We examined two possible metrics for sensorless AO, measured in a solution of fluorophores diffusing in 3D: the fluorescence count rate and the molecular brightness (or number of photons detected per molecule in the observation volume). We studied their respective measurement noise and sensitivity to aberrations. Then, AO correction accuracy was experimentally assessed by measuring the residual aberration after correcting a known wavefront. We proposed a theoretical framework to predict the correction accuracy, knowing the metric measurement noise and sensitivity. In the small aberration range, the brightness allows more accurate corrections when fluorophores are few but bright, whereas the count rate performs better in more concentrated solutions. When correcting large aberrations, the count rate is expected to be a more reliable metric.
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32
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Zheng W, Wu Y, Winter P, Fischer R, Nogare DD, Hong A, McCormick C, Christensen R, Dempsey WP, Arnold DB, Zimmerberg J, Chitnis A, Sellers J, Waterman C, Shroff H. Adaptive optics improves multiphoton super-resolution imaging. Nat Methods 2017. [PMID: 28628128 DOI: 10.1038/nmeth.4337] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We improve multiphoton structured illumination microscopy using a nonlinear guide star to determine optical aberrations and a deformable mirror to correct them. We demonstrate our method on bead phantoms, cells in collagen gels, nematode larvae and embryos, Drosophila brain, and zebrafish embryos. Peak intensity is increased (up to 40-fold) and resolution recovered (up to 176 ± 10 nm laterally, 729 ± 39 nm axially) at depths ∼250 μm from the coverslip surface.
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Affiliation(s)
- Wei Zheng
- Section on High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA.,Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Yicong Wu
- Section on High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
| | - Peter Winter
- Section on High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
| | - Robert Fischer
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Damian Dalle Nogare
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA
| | - Amy Hong
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Chad McCormick
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA
| | - Ryan Christensen
- Section on High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
| | - William P Dempsey
- Department of Biology, Section of Molecular and Computational Biology, University of Southern California, Los Angeles, California, USA
| | - Don B Arnold
- Department of Biology, Section of Molecular and Computational Biology, University of Southern California, Los Angeles, California, USA
| | - Joshua Zimmerberg
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA
| | - Ajay Chitnis
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA
| | - James Sellers
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Clare Waterman
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Hari Shroff
- Section on High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
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33
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Rutkauskas M, Reid DT, Garduño-Mejía J, Rosete-Aguilar M. Time-domain measurements reveal spatial aberrations in a sub-surface two-photon microscope. APPLIED OPTICS 2017; 56:5047-5053. [PMID: 29047653 DOI: 10.1364/ao.56.005047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/13/2017] [Indexed: 06/07/2023]
Abstract
We show that in a nonlinear microscopy system the effects of chromatic and spherical aberrations are revealed by a difference in the focal positions corresponding to the shortest pulse duration and the minimum lateral resolution. By interpreting experimental results from a high-numerical-aperture two-photon microscope using a previously reported spatio-temporal model, we conclude that the two-photon autocorrelation of the pulses at the focal plane can be used to minimize both the chromatic and spherical aberrations of the system. Based on these results, a possible optimization strategy is proposed whereby the objective lens is first adjusted for minimum autocorrelation duration, and then the wavefront before the objective is modified to maximize the autocorrelation intensity.
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34
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Adaptive optical fluorescence microscopy. Nat Methods 2017; 14:374-380. [DOI: 10.1038/nmeth.4218] [Citation(s) in RCA: 295] [Impact Index Per Article: 42.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 02/06/2017] [Indexed: 12/24/2022]
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35
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Image-based adaptive optics for in vivo imaging in the hippocampus. Sci Rep 2017; 7:42924. [PMID: 28220868 PMCID: PMC5318884 DOI: 10.1038/srep42924] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/16/2017] [Indexed: 12/24/2022] Open
Abstract
Adaptive optics is a promising technique for the improvement of microscopy in tissues. A large palette of indirect and direct wavefront sensing methods has been proposed for in vivo imaging in experimental animal models. Application of most of these methods to complex samples suffers from either intrinsic and/or practical difficulties. Here we show a theoretically optimized wavefront correction method for inhomogeneously labeled biological samples. We demonstrate its performance at a depth of 200 μm in brain tissue within a sparsely labeled region such as the pyramidal cell layer of the hippocampus, with cells expressing GCamP6. This method is designed to be sample-independent thanks to an automatic axial locking on objects of interest through the use of an image-based metric that we designed. Using this method, we show an increase of in vivo imaging quality in the hippocampus.
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36
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Fujita K. Follow-up review: recent progress in the development of super-resolution optical microscopy. Microscopy (Oxf) 2016; 65:275-81. [PMID: 27385787 DOI: 10.1093/jmicro/dfw022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 05/19/2016] [Indexed: 11/12/2022] Open
Abstract
The advent of super-resolution microscopy brought a huge impact to various research fields ranging from the fundamental science to medical and industrial applications. The technological development is still ongoing with involving different scientific disciplines and often changing the standard of optical imaging. In this review, I would like to introduce the recent research progress in super-resolution microscopy as a follow-up for the featured issue in Microscopy (Vol. 64, No. 4, 2015) with discussions especially on the current trends and new directions in the technological development.
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37
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Wang Z, Lei M, Yao B, Cai Y, Liang Y, Yang Y, Yang X, Li H, Xiong D. Compact multi-band fluorescent microscope with an electrically tunable lens for autofocusing. BIOMEDICAL OPTICS EXPRESS 2015; 6:4353-64. [PMID: 26601001 PMCID: PMC4646545 DOI: 10.1364/boe.6.004353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 10/10/2015] [Accepted: 10/11/2015] [Indexed: 05/09/2023]
Abstract
Autofocusing is a routine technique in redressing focus drift that occurs in time-lapse microscopic image acquisition. To date, most automatic microscopes are designed on the distance detection scheme to fulfill the autofocusing operation, which may suffer from the low contrast of the reflected signal due to the refractive index mismatch at the water/glass interface. To achieve high autofocusing speed with minimal motion artifacts, we developed a compact multi-band fluorescent microscope with an electrically tunable lens (ETL) device for autofocusing. A modified searching algorithm based on equidistant scanning and curve fitting is proposed, which no longer requires a single-peak focus curve and then efficiently restrains the impact of external disturbance. This technique enables us to achieve an autofocusing time of down to 170 ms and the reproductivity of over 97%. The imaging head of the microscope has dimensions of 12 cm × 12 cm × 6 cm. This portable instrument can easily fit inside standard incubators for real-time imaging of living specimens.
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Affiliation(s)
- Zhaojun Wang
- State Key Laboratory of Transient Optics and Photonics, Xi' an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi' an 710119, China
| | - Ming Lei
- State Key Laboratory of Transient Optics and Photonics, Xi' an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi' an 710119, China ;
| | - Baoli Yao
- State Key Laboratory of Transient Optics and Photonics, Xi' an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi' an 710119, China ;
| | - Yanan Cai
- State Key Laboratory of Transient Optics and Photonics, Xi' an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi' an 710119, China
| | - Yansheng Liang
- State Key Laboratory of Transient Optics and Photonics, Xi' an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi' an 710119, China
| | - Yanlong Yang
- State Key Laboratory of Transient Optics and Photonics, Xi' an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi' an 710119, China
| | - Xibin Yang
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Hui Li
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Daxi Xiong
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
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38
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SKORSETZ MARTIN, ARTAL PABLO, BUENO JUANM. Performance evaluation of a sensorless adaptive optics multiphoton microscope. J Microsc 2015; 261:249-58. [DOI: 10.1111/jmi.12325] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 09/02/2015] [Indexed: 01/26/2023]
Affiliation(s)
- MARTIN SKORSETZ
- Laboratorio de Óptica, Instituto Universitario de Investigación en Óptica y Nanofísica; Universidad de Murcia; Murcia Spain
| | - PABLO ARTAL
- Laboratorio de Óptica, Instituto Universitario de Investigación en Óptica y Nanofísica; Universidad de Murcia; Murcia Spain
| | - JUAN M. BUENO
- Laboratorio de Óptica, Instituto Universitario de Investigación en Óptica y Nanofísica; Universidad de Murcia; Murcia Spain
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39
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Tanabe A, Hibi T, Ipponjima S, Matsumoto K, Yokoyama M, Kurihara M, Hashimoto N, Nemoto T. Correcting spherical aberrations in a biospecimen using a transmissive liquid crystal device in two-photon excitation laser scanning microscopy. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:101204. [PMID: 26244766 DOI: 10.1117/1.jbo.20.10.101204] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 05/18/2015] [Indexed: 05/24/2023]
Abstract
Two-photon excitation laser scanning microscopy has enabled the visualization of deep regions in a biospecimen. However, refractive-index mismatches in the optical path cause spherical aberrations that degrade spatial resolution and the fluorescence signal, especially during observation at deeper regions. Recently, we developed transmissive liquid-crystal devices for correcting spherical aberration without changing the basic design of the optical path in a conventional laser scanning microscope. In this study, the device was inserted in front of the objective lens and supplied with the appropriate voltage according to the observation depth. First, we evaluated the device by observing fluorescent beads in single- and two-photon excitation laser scanning microscopes. Using a 25× water-immersion objective lens with a numerical aperture of 1.1 and a sample with a refractive index of 1.38, the device recovered the spatial resolution and the fluorescence signal degraded within a depth of 0.6 mm. Finally, we implemented the device for observation of a mouse brain slice in a two-photon excitation laser scanning microscope. An optical clearing reagent with a refractive index of 1.42 rendered the fixed mouse brain transparent. The device improved the spatial resolution and the yellow fluorescent protein signal within a depth of 0-0.54 mm.
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Affiliation(s)
- Ayano Tanabe
- Hokkaido University, Research Institute for Electronic Science, N20W10, Kita-Ward, Sapporo, Hokkaido 001-0020, JapanbHokkaido University, Graduate School of Information Science and Technology, N14W9, Kita-Ward, Sapporo, Hokkaido 060-0814, JapancCitizen Ho
| | - Terumasa Hibi
- Hokkaido University, Research Institute for Electronic Science, N20W10, Kita-Ward, Sapporo, Hokkaido 001-0020, JapanbHokkaido University, Graduate School of Information Science and Technology, N14W9, Kita-Ward, Sapporo, Hokkaido 060-0814, Japan
| | - Sari Ipponjima
- Hokkaido University, Research Institute for Electronic Science, N20W10, Kita-Ward, Sapporo, Hokkaido 001-0020, JapanbHokkaido University, Graduate School of Information Science and Technology, N14W9, Kita-Ward, Sapporo, Hokkaido 060-0814, Japan
| | - Kenji Matsumoto
- Citizen Holdings Co. Ltd., 840, Shimotomi, Tokorozawa, Saitama 359-8511, Japan
| | - Masafumi Yokoyama
- Citizen Holdings Co. Ltd., 840, Shimotomi, Tokorozawa, Saitama 359-8511, Japan
| | - Makoto Kurihara
- Citizen Holdings Co. Ltd., 840, Shimotomi, Tokorozawa, Saitama 359-8511, Japan
| | - Nobuyuki Hashimoto
- Citizen Holdings Co. Ltd., 840, Shimotomi, Tokorozawa, Saitama 359-8511, Japan
| | - Tomomi Nemoto
- Hokkaido University, Research Institute for Electronic Science, N20W10, Kita-Ward, Sapporo, Hokkaido 001-0020, JapanbHokkaido University, Graduate School of Information Science and Technology, N14W9, Kita-Ward, Sapporo, Hokkaido 060-0814, Japan
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40
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Direct wavefront sensing for high-resolution in vivo imaging in scattering tissue. Nat Commun 2015; 6:7276. [PMID: 26073070 PMCID: PMC4490402 DOI: 10.1038/ncomms8276] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 04/26/2015] [Indexed: 12/22/2022] Open
Abstract
Adaptive optics by direct imaging of the wavefront distortions of a laser-induced guide star has long been used in astronomy, and more recently in microscopy to compensate for aberrations in transparent specimens. Here we extend this approach to tissues that strongly scatter visible light by exploiting the reduced scattering of near-infrared guide stars. The method enables in vivo two-photon morphological and functional imaging down to 700 μm inside the mouse brain.
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41
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Fraisier V, Clouvel G, Jasaitis A, Dimitrov A, Piolot T, Salamero J. Adaptive optics in spinning disk microscopy: improved contrast and brightness by a simple and fast method. J Microsc 2015; 259:219-27. [PMID: 25940062 DOI: 10.1111/jmi.12256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 03/20/2015] [Indexed: 11/29/2022]
Abstract
Multiconfocal microscopy gives a good compromise between fast imaging and reasonable resolution. However, the low intensity of live fluorescent emitters is a major limitation to this technique. Aberrations induced by the optical setup, especially the mismatch of the refractive index and the biological sample itself, distort the point spread function and further reduce the amount of detected photons. Altogether, this leads to impaired image quality, preventing accurate analysis of molecular processes in biological samples and imaging deep in the sample. The amount of detected fluorescence can be improved with adaptive optics. Here, we used a compact adaptive optics module (adaptive optics box for sectioning optical microscopy), which was specifically designed for spinning disk confocal microscopy. The module overcomes undesired anomalies by correcting for most of the aberrations in confocal imaging. Existing aberration detection methods require prior illumination, which bleaches the sample. To avoid multiple exposures of the sample, we established an experimental model describing the depth dependence of major aberrations. This model allows us to correct for those aberrations when performing a z-stack, gradually increasing the amplitude of the correction with depth. It does not require illumination of the sample for aberration detection, thus minimizing photobleaching and phototoxicity. With this model, we improved both signal-to-background ratio and image contrast. Here, we present comparative studies on a variety of biological samples.
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Affiliation(s)
- V Fraisier
- UMR 144 CNRS Institut Curie, Cell and Tissue Imaging Platform (PICT-IBiSA), Nikon Imaging Centre, Paris, France
| | | | | | - A Dimitrov
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - T Piolot
- Institut Curie, Cell and Tissue Imaging platform (PICT-IBiSA), Paris, France
| | - J Salamero
- UMR 144 CNRS Institut Curie, Cell and Tissue Imaging Platform (PICT-IBiSA), Nikon Imaging Centre, Paris, France.,UMR 144 CNRS Institut Curie, Space Time Imaging of Endomembranes and Organelles Dynamics, Paris, France
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42
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Antonello J, van Werkhoven T, Verhaegen M, Truong HH, Keller CU, Gerritsen HC. Optimization-based wavefront sensorless adaptive optics for multiphoton microscopy. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2014; 31:1337-47. [PMID: 24977374 DOI: 10.1364/josaa.31.001337] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Optical aberrations have detrimental effects in multiphoton microscopy. These effects can be curtailed by implementing model-based wavefront sensorless adaptive optics, which only requires the addition of a wavefront shaping device, such as a deformable mirror (DM) to an existing microscope. The aberration correction is achieved by maximizing a suitable image quality metric. We implement a model-based aberration correction algorithm in a second-harmonic microscope. The tip, tilt, and defocus aberrations are removed from the basis functions used for the control of the DM, as these aberrations induce distortions in the acquired images. We compute the parameters of a quadratic polynomial that is used to model the image quality metric directly from experimental input-output measurements. Finally, we apply the aberration correction by maximizing the image quality metric using the least-squares estimate of the unknown aberration.
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43
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Wang K, Milkie D, Saxena A, Engerer P, Misgeld T, Bronner ME, Mumm J, Betzig E. Rapid adaptive optical recovery of optimal resolution over large volumes. Nat Methods 2014; 11:625-8. [PMID: 24727653 PMCID: PMC4069208 DOI: 10.1038/nmeth.2925] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 03/06/2014] [Indexed: 02/06/2023]
Abstract
Using a descanned, laser-induced guide star and direct wavefront sensing, we demonstrate adaptive correction of complex optical aberrations at high numerical aperture (NA) and a 14-ms update rate. This correction permits us to compensate for the rapid spatial variation in aberration often encountered in biological specimens and to recover diffraction-limited imaging over large volumes (>240 mm per side). We applied this to image fine neuronal processes and subcellular dynamics within the zebrafish brain.
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Affiliation(s)
- Kai Wang
- Janelia Farm Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia, USA
| | - Dan Milkie
- Coleman Technologies, Inc., Newtown Square, Pennsylvania, USA
| | - Ankur Saxena
- Division of Biology, California Institute of Technology, Pasadena, California, USA
| | - Peter Engerer
- Institute of Neuronal Cell Biology, Technische Universität München, Munich, Germany
- Munich Center for Systems Neurology, Munich, Germany
- German Center for Neurodegenerative Diseases, Munich, Germany
| | - Thomas Misgeld
- Institute of Neuronal Cell Biology, Technische Universität München, Munich, Germany
- Munich Center for Systems Neurology, Munich, Germany
- German Center for Neurodegenerative Diseases, Munich, Germany
| | - Marianne E. Bronner
- Division of Biology, California Institute of Technology, Pasadena, California, USA
| | - Jeff Mumm
- Department of Cellular Biology and Anatomy, Georgia Regents University, Augusta, Georgia, USA
| | - Eric Betzig
- Janelia Farm Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia, USA
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44
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Chang CY, Cheng LC, Su HW, Hu YY, Cho KC, Yen WC, Xu C, Dong CY, Chen SJ. Wavefront sensorless adaptive optics temporal focusing-based multiphoton microscopy. BIOMEDICAL OPTICS EXPRESS 2014; 5:1768-77. [PMID: 24940539 PMCID: PMC4052910 DOI: 10.1364/boe.5.001768] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 05/02/2014] [Accepted: 05/05/2014] [Indexed: 05/27/2023]
Abstract
Temporal profile distortions reduce excitation efficiency and image quality in temporal focusing-based multiphoton microscopy. In order to compensate the distortions, a wavefront sensorless adaptive optics system (AOS) was integrated into the microscope. The feedback control signal of the AOS was acquired from local image intensity maximization via a hill-climbing algorithm. The control signal was then utilized to drive a deformable mirror in such a way as to eliminate the distortions. With the AOS correction, not only is the axial excitation symmetrically refocused, but the axial resolution with full two-photon excited fluorescence (TPEF) intensity is also maintained. Hence, the contrast of the TPEF image of a R6G-doped PMMA thin film is enhanced along with a 3.7-fold increase in intensity. Furthermore, the TPEF image quality of 1μm fluorescent beads sealed in agarose gel at different depths is improved.
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Affiliation(s)
- Chia-Yuan Chang
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Li-Chung Cheng
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Hung-Wei Su
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Yvonne Yuling Hu
- Department of Engineering Science, National Cheng Kung University, Tainan 701, Taiwan
| | - Keng-Chi Cho
- Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan
| | - Wei-Chung Yen
- Material & Electro-Optics Research Division, Chung-Shan Institute of Science Technology, Tao-Yuan 325, Taiwan
| | - Chris Xu
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853 USA
| | - Chen Yuan Dong
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
| | - Shean-Jen Chen
- Department of Engineering Science, National Cheng Kung University, Tainan 701, Taiwan
- Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
- Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan
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45
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Tao X, Norton A, Kissel M, Azucena O, Kubby J. Adaptive optical two-photon microscopy using autofluorescent guide stars. OPTICS LETTERS 2013; 38:5075-8. [PMID: 24281513 DOI: 10.1364/ol.38.005075] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We demonstrate a fast, direct wavefront-sensing method for dynamic in vivo adaptive optical two-photon microscopy. By using a Shack-Hartmann wavefront sensor and open-loop control, the system provides high-speed wavefront measurement and correction. To measure the wavefront in the middle of a Drosophila embryo at early stages, autofluorescence from endogenous fluorophores in the yolk were used as reference guide stars. The method was tested through live imaging of a Drosophila embryo. The aberration in the middle of the embryo was measured directly for the first time. After correction, the contrast and signal intensity of the structure in the middle of the embryo was improved.
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46
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Rahman SA, Booth MJ. Direct wavefront sensing in adaptive optical microscopy using backscattered light. APPLIED OPTICS 2013; 52:5523-32. [PMID: 23913074 DOI: 10.1364/ao.52.005523] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 07/05/2013] [Indexed: 05/18/2023]
Abstract
Adaptive optics has been used to compensate the detrimental effects of aberrations in a range of high-resolution microscopes. We investigate how backscattered laser illumination can be used as the source for direct wavefront sensing using a pinhole-filtered Shack-Hartmann wavefront sensor. It is found that the sensor produces linear response to input aberrations for a given specimen. The gradient of this response is dependent upon experimental configuration and specimen structure. Cross sensitivity between modes is also observed. The double pass nature of the microscope system leads in general to lower sensitivity to odd-symmetry aberration modes. The results show that there is potential for use of this type of wavefront sensing in microscopes.
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Affiliation(s)
- Saad A Rahman
- Department of Engineering Science, University of Oxford, Oxford, UK
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47
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Antonello J, Verhaegen M, Fraanje R, van Werkhoven T, Gerritsen HC, Keller CU. Semidefinite programming for model-based sensorless adaptive optics. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2012. [PMID: 23201806 DOI: 10.1364/josaa.29.002428] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Wavefront sensorless adaptive optics methodologies are widely considered in scanning fluorescence microscopy where direct wavefront sensing is challenging. In these methodologies, aberration correction is performed by sequentially changing the settings of the adaptive element until a predetermined image quality metric is optimized. An efficient aberration correction can be achieved by modeling the image quality metric with a quadratic polynomial. We propose a new method to compute the parameters of the polynomial from experimental data. This method guarantees that the quadratic form in the polynomial is semidefinite, resulting in a more robust computation of the parameters with respect to existing methods. In addition, we propose an algorithm to perform aberration correction requiring a minimum of N+1 measurements, where N is the number of considered aberration modes. This algorithm is based on a closed-form expression for the exact optimization of the quadratic polynomial. Our arguments are corroborated by experimental validation in a laboratory environment.
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Affiliation(s)
- Jacopo Antonello
- Delft Center for Systems and Control, Delft University of Technology, Mekelweg 2, Delft 2628 CD, The Netherlands.
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48
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Zeng J, Mahou P, Schanne-Klein MC, Beaurepaire E, Débarre D. 3D resolved mapping of optical aberrations in thick tissues. BIOMEDICAL OPTICS EXPRESS 2012; 3:1898-913. [PMID: 22876353 PMCID: PMC3409708 DOI: 10.1364/boe.3.001898] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 07/16/2012] [Accepted: 07/17/2012] [Indexed: 05/15/2023]
Abstract
We demonstrate a simple method for mapping optical aberrations with 3D resolution within thick samples. The method relies on the local measurement of the variation in image quality with externally applied aberrations. We discuss the accuracy of the method as a function of the signal strength and of the aberration amplitude and we derive the achievable resolution for the resulting measurements. We then report on measured 3D aberration maps in human skin biopsies and mouse brain slices. From these data, we analyse the consequences of tissue structure and refractive index distribution on aberrations and imaging depth in normal and cleared tissue samples. The aberration maps allow the estimation of the typical aplanetism region size over which aberrations can be uniformly corrected. This method and data pave the way towards efficient correction strategies for tissue imaging applications.
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Affiliation(s)
- Jun Zeng
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, 91128 Palaiseau,
France
| | - Pierre Mahou
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, 91128 Palaiseau,
France
| | | | - Emmanuel Beaurepaire
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, 91128 Palaiseau,
France
| | - Delphine Débarre
- Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, 91128 Palaiseau,
France
- Laboratory of Interdisciplinary Physics, UJF-CNRS UMR 5588, 38402 St Martin d’Hères,
France
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Tao X, Crest J, Kotadia S, Azucena O, Chen DC, Sullivan W, Kubby J. Live imaging using adaptive optics with fluorescent protein guide-stars. OPTICS EXPRESS 2012; 20:15969-82. [PMID: 22772285 PMCID: PMC3601654 DOI: 10.1364/oe.20.015969] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 06/18/2012] [Accepted: 06/19/2012] [Indexed: 05/18/2023]
Abstract
Spatially and temporally dependent optical aberrations induced by the inhomogeneous refractive index of live samples limit the resolution of live dynamic imaging. We introduce an adaptive optical microscope with a direct wavefront sensing method using a Shack-Hartmann wavefront sensor and fluorescent protein guide-stars for live imaging. The results of imaging Drosophila embryos demonstrate its ability to correct aberrations and achieve near diffraction limited images of medial sections of large Drosophila embryos. GFP-polo labeled centrosomes can be observed clearly after correction but cannot be observed before correction. Four dimensional time lapse images are achieved with the correction of dynamic aberrations. These studies also demonstrate that the GFP-tagged centrosome proteins, Polo and Cnn, serve as excellent biological guide-stars for adaptive optics based microscopy.
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Affiliation(s)
- Xiaodong Tao
- W.M. Keck Center for Adaptive Optical Microscopy, Jack Baskin School of Engineering, University of California, Santa Cruz, California 95064, USA.
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50
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Izeddin I, El Beheiry M, Andilla J, Ciepielewski D, Darzacq X, Dahan M. PSF shaping using adaptive optics for three-dimensional single-molecule super-resolution imaging and tracking. OPTICS EXPRESS 2012; 20:4957-67. [PMID: 22418300 DOI: 10.1364/oe.20.004957] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We present a novel approach for three-dimensional localization of single molecules using adaptive optics. A 52-actuator deformable mirror is used to both correct aberrations and induce two-dimensional astigmatism in the point-spread-function. The dependence of the z-localization precision on the degree of astigmatism is discussed. We achieve a z-localization precision of 40 nm for fluorescent proteins and 20 nm for fluorescent dyes, over an axial depth of ~800 nm. We illustrate the capabilities of our approach for three-dimensional high-resolution microscopy with super-resolution images of actin filaments in fixed cells and single-molecule tracking of quantum-dot labeled transmembrane proteins in live HeLa cells.
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Affiliation(s)
- Ignacio Izeddin
- Laboratoire Kastler Brossel, CNRS UMR 8552, Département de Physique et Institut de Biologie de l’Ecole Normale Supérieure, Université Pierre et Marie Curie-Paris6, 46 rue d’Ulm 75230 Paris cedex 05, France
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