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Miura N, Ashida Y, Matsuda Y, Shibuya T, Tamada Y, Hatsumi S, Yamamoto H, Kajikawa I, Kamei Y, Hattori M. Adaptive Optics Microscopy with Wavefront Sensing Based on Neighbor Correlation. PLANT & CELL PHYSIOLOGY 2023; 64:1372-1382. [PMID: 37930869 DOI: 10.1093/pcp/pcad138] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 11/08/2023]
Abstract
Complex structures in living cells and tissues induce wavefront errors when light waves pass through them, and images observed with optical microscopes are undesirably blurred. This problem is especially serious for living plant cells because images are strikingly degraded even within a single cell. Adaptive optics (AO) is expected to be a solution to this problem by correcting such wavefront errors, thus enabling high-resolution imaging. In particular, scene-based AO involves wavefront sensing based on the image correlation between subapertures in a Shack-Hartmann wavefront sensor and thus does not require an intense point light source. However, the complex 3D structures of living cells often cause low correlation between subimages, leading to loss of accuracy in wavefront sensing. This paper proposes a novel method for scene-based sensing using only image correlations between adjacent subapertures. The method can minimize changes between subimages to be correlated and thus prevent inaccuracy in phase estimation. Using an artificial test target mimicking the optical properties of a layer of living plant cells, an imaging performance with a Strehl ratio of approximately 0.5 was confirmed. Upon observation of chloroplast autofluorescence inside living leaf cells of the moss Physcomitrium patens, recovered resolution images were successfully obtained even with complex biological structures. Under bright-field illumination, the proposed method outperformed the conventional method, demonstrating the future potential of this method for label- and damage-free AO microscopy. Several points for improvement in terms of the effect of AO correction are discussed.
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Affiliation(s)
- Noriaki Miura
- School of Information and Communication Engineering, Kitami Institute of Technology, Kitami 090-8507, Japan
| | - Yusuke Ashida
- School of Information and Communication Engineering, Kitami Institute of Technology, Kitami 090-8507, Japan
| | - Yuya Matsuda
- School of Information and Communication Engineering, Kitami Institute of Technology, Kitami 090-8507, Japan
| | - Takatoshi Shibuya
- School of Information and Communication Engineering, Kitami Institute of Technology, Kitami 090-8507, Japan
| | - Yosuke Tamada
- School of Engineering, Utsunomiya University, Utsunomiya, 321-8585 Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Utsunomiya, 321-8585 Japan
- Center for Optical Research and Education (CORE), Utsunomiya University, Utsunomiya, 321-0912 Japan
- Robotics, Engineering and Agriculture-technology Laboratory (REAL), Utsunomiya University, Utsunomiya, 321-0912 Japan
| | - Shuto Hatsumi
- Graduate School of Regional Development and Creativity, Utsunomiya University, Utsunomiya, 321-8585 Japan
| | - Hirotsugu Yamamoto
- School of Engineering, Utsunomiya University, Utsunomiya, 321-8585 Japan
- Graduate School of Regional Development and Creativity, Utsunomiya University, Utsunomiya, 321-8585 Japan
- Center for Optical Research and Education (CORE), Utsunomiya University, Utsunomiya, 321-0912 Japan
- Robotics, Engineering and Agriculture-technology Laboratory (REAL), Utsunomiya University, Utsunomiya, 321-0912 Japan
| | - Ikumi Kajikawa
- School of Engineering, Utsunomiya University, Utsunomiya, 321-8585 Japan
| | - Yasuhiro Kamei
- National Institute for Basic Biology, 38 Nishigonaka, Myodaiji, Okazaki, Aichi, 444-8585 Japan
| | - Masayuki Hattori
- National Astronomical Observatory of Japan, Mitaka, 181-8588 Japan
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Nakajima K, Higaki T, Ueda T, Inami M. Gaining New Insights in Plant Biology through Human-Machine Collaboration. PLANT & CELL PHYSIOLOGY 2023; 64:1257-1261. [PMID: 37952100 DOI: 10.1093/pcp/pcad144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/14/2023]
Affiliation(s)
- Keiji Nakajima
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192 Japan
| | - Takumi Higaki
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kurokami 2-39-1, Chuo-ku, Kumamoto, 860-8555 Japan
- International Research Organization for Advanced Science and Technology, Kumamoto University, Kurokami 2-39-1, Chuo-ku, Kumamoto, 860-8555 Japan
| | - Takashi Ueda
- Division of Cellular Dynamics, National Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki, Aichi, 444-8585 Japan
- Department of Basic Biology, SOKENDAI (The Graduate University for Advanced Studies), Nishigonaka 38, Myodaiji, Okazaki, Aichi, 444-8585 Japan
| | - Masahiko Inami
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Tokyo, 153-8904 Japan
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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: 24] [Impact Index Per Article: 12.0] [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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Abstract
Adaptive optics (AO) is a technique that corrects for optical aberrations. It was originally proposed to correct for the blurring effect of atmospheric turbulence on images in ground-based telescopes and was instrumental in the work that resulted in the Nobel prize-winning discovery of a supermassive compact object at the centre of our galaxy. When AO is used to correct for the eye's imperfect optics, retinal changes at the cellular level can be detected, allowing us to study the operation of the visual system and to assess ocular health in the microscopic domain. By correcting for sample-induced blur in microscopy, AO has pushed the boundaries of imaging in thick tissue specimens, such as when observing neuronal processes in the brain. In this primer, we focus on the application of AO for high-resolution imaging in astronomy, vision science and microscopy. We begin with an overview of the general principles of AO and its main components, which include methods to measure the aberrations, devices for aberration correction, and how these components are linked in operation. We present results and applications from each field along with reproducibility considerations and limitations. Finally, we discuss future directions.
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