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Yu Z, Li H, Zhao W, Huang PS, Lin YT, Yao J, Li W, Zhao Q, Wu PC, Li B, Genevet P, Song Q, Lai P. High-security learning-based optical encryption assisted by disordered metasurface. Nat Commun 2024; 15:2607. [PMID: 38521827 PMCID: PMC10960874 DOI: 10.1038/s41467-024-46946-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 03/15/2024] [Indexed: 03/25/2024] Open
Abstract
Artificial intelligence has gained significant attention for exploiting optical scattering for optical encryption. Conventional scattering media are inevitably influenced by instability or perturbations, and hence unsuitable for long-term scenarios. Additionally, the plaintext can be easily compromised due to the single channel within the medium and one-to-one mapping between input and output. To mitigate these issues, a stable spin-multiplexing disordered metasurface (DM) with numerous polarized transmission channels serves as the scattering medium, and a double-secure procedure with superposition of plaintext and security key achieves two-to-one mapping between input and output. In attack analysis, when the ciphertext, security key, and incident polarization are all correct, the plaintext can be decrypted. This system demonstrates excellent decryption efficiency over extended periods in noisy environments. The DM, functioning as an ultra-stable and active speckle generator, coupled with the double-secure approach, creates a highly secure speckle-based cryptosystem with immense potentials for practical applications.
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Affiliation(s)
- Zhipeng Yu
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong SAR, China
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, Guangdong, China
| | - Huanhao Li
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong SAR, China
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, Guangdong, China
| | - Wannian Zhao
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China
| | - Po-Sheng Huang
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Tsung Lin
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan
| | - Jing Yao
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong SAR, China
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, Guangdong, China
| | - Wenzhao Li
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong SAR, China
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, Guangdong, China
| | - Qi Zhao
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong SAR, China
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, Guangdong, China
| | - Pin Chieh Wu
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan
- Center for Quantum Frontiers of Research & Technology (QFort), National Cheng Kung University, Tainan, Taiwan
- Meta-nanoPhotonics Center, National Cheng Kung University, Tainan, Taiwan
| | - Bo Li
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China
- Suzhou Laboratory, Suzhou, China
| | - Patrice Genevet
- Physics Department, Colorado School of Mines, Golden, CO, USA.
| | - Qinghua Song
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China.
- Suzhou Laboratory, Suzhou, China.
| | - Puxiang Lai
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong SAR, China.
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, Guangdong, China.
- Photonics Research Institute, Hong Kong Polytechnic University, Hong Kong SAR, China.
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Li H, Yu Z, Zhong T, Lai P. Performance enhancement in wavefront shaping of multiply scattered light: a review. J Biomed Opt 2024; 29:S11512. [PMID: 38125718 PMCID: PMC10732255 DOI: 10.1117/1.jbo.29.s1.s11512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
Significance In nonballistic regime, optical scattering impedes high-resolution imaging through/inside complex media, such as milky liquid, fog, multimode fiber, and biological tissues, where confocal and multiphoton modalities fail. The significant tissue inhomogeneity-induced distortions need to be overcome and a technique referred as optical wavefront shaping (WFS), first proposed in 2007, has been becoming a promising solution, allowing for flexible and powerful light control. Understanding the principle and development of WFS may inspire exciting innovations for effective optical manipulation, imaging, stimulation, and therapy at depths in tissue or tissue-like complex media. Aim We aim to provide insights about what limits the WFS towards biomedical applications, and how recent efforts advance the performance of WFS among different trade-offs. Approach By differentiating the two implementation directions in the field, i.e., precompensation WFS and optical phase conjugation (OPC), improvement strategies are summarized and discussed. Results For biomedical applications, improving the speed of WFS is most essential in both directions, and a system-compatible wavefront modulator driven by fast apparatus is desired. In addition to that, algorithm efficiency and adaptability to perturbations/noise is of concern in precompensation WFS, while for OPC significant improvements rely heavily on integrating physical mechanisms and delicate system design for faster response and higher energy gain. Conclusions Substantial improvements in WFS implementations, from the aspects of physics, engineering, and computing, have inspired many novel and exciting optical applications that used to be optically inaccessible. It is envisioned that continuous efforts in the field can further advance WFS towards biomedical applications and guide our vision into deep biological tissues.
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Affiliation(s)
- Huanhao Li
- Hong Kong Polytechnic University, Department of Biomedical Engineering, Hong Kong, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, China
| | - Zhipeng Yu
- Hong Kong Polytechnic University, Department of Biomedical Engineering, Hong Kong, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, China
| | - Tianting Zhong
- Hong Kong Polytechnic University, Department of Biomedical Engineering, Hong Kong, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, China
| | - Puxiang Lai
- Hong Kong Polytechnic University, Department of Biomedical Engineering, Hong Kong, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, China
- Hong Kong Polytechnic University, Photonics Research Institute, Hong Kong, China
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Wang L, Li W, Li M, Lai P, Yang C, Wang H, Ma B, Huang R, Zu Y. Bio-Inspired Fractal Robust Hydrogel Catheter for Intra-Abdominal Sepsis Management. Adv Sci (Weinh) 2023; 10:e2303090. [PMID: 37822166 PMCID: PMC10646267 DOI: 10.1002/advs.202303090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/10/2023] [Indexed: 10/13/2023]
Abstract
To deal with intra-abdominal sepsis, one of the major global causes of death in hospitalized patients, efficient abscess drainage is crucial. Despite decades of advances, traditional catheters have demonstrated poor drainage and absorption properties due to their simple tubular structures and their dense nonporous surface. Herein, inspired by porous sponges and fractal roots, a multifaceted hydrogel catheter with effective drainage, absorptive, and robust properties, is presented. Its unique fractal structures provide extensive internal branching and a high specific surface area for effective drainage, while the hierarchical porous structures provide a wide range of absorption capabilities. Additionally, its distinctive multi-interpenetration network maintains robust and appropriate mechanical properties, even after absorption multiple times of liquid and mechanical disturbance, allowing for intact removal from the abdominal cavity without harm to the animal in vivo. Besides, the loaded antimicrobial peptides are capable of being released in situ to inhibit the potential for infections. In vivo experiments have demonstrated that this hydrogel catheter efficiently removes lethal abscesses and improves survival. It is believed that this innovative and practical catheter will create a future precedent for hydrogel drainage devices for more effective management of intra-abdominal sepsis.
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Affiliation(s)
- Lichun Wang
- Department of Critical Care MedicineThe Sixth Affiliated HospitalSun Yat‐sen UniversityGuangzhou510655China
| | - Wenzhao Li
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health)Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang325001China
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong Kong SAR999077China
| | - Min Li
- Department of Gastrointestinal SurgerySouthern Medical UniversityAffiliated Dongguan Shilong Peoples HospitalSSL Center Hospital Dongguan CityDongguan523326China
| | - Puxiang Lai
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong Kong SAR999077China
| | - Chunhua Yang
- Department of Critical Care MedicineThe Sixth Affiliated HospitalSun Yat‐sen UniversityGuangzhou510655China
| | - Hui Wang
- Department of General Surgery (Colorectal Surgery) and Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor DiseasesGuangdong Institute of GastroenterologyBiomedical Innovation CenterThe Sixth Affiliated HospitalSun Yat‐sen UniversityGuangzhou510655China
| | - Bo Ma
- Department of UrologyThe Sixth Affiliated HospitalSun Yat‐sen UniversityGuangzhou510655China
| | - Rongkang Huang
- Department of General Surgery (Colorectal Surgery) and Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor DiseasesGuangdong Institute of GastroenterologyBiomedical Innovation CenterThe Sixth Affiliated HospitalSun Yat‐sen UniversityGuangzhou510655China
| | - Yan Zu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health)Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang325001China
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Li W, Yu Y, Huang R, Wang X, Lai P, Chen K, Shang L, Zhao Y. Multi-Bioinspired Functional Conductive Hydrogel Patches for Wound Healing Management. Adv Sci (Weinh) 2023; 10:e2301479. [PMID: 37376818 PMCID: PMC10477846 DOI: 10.1002/advs.202301479] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/03/2023] [Indexed: 06/29/2023]
Abstract
Many hydrogel patches are developed to solve the pervasive and severe challenge of complex wound healing, while most of them still lack satisfactory controllability and comprehensive functionality. Herein, inspired by multiple creatures, including octopuses and snails, a novel muti-functional hydrogel patch is presented with controlled adhesion, antibacterial, drug release features, and multiple monitoring functions for intelligent wound healing management. The patch with micro suction-cup actuator array and a tensile backing layer is composed of tannin grafted gelatin, Ag-tannin nanoparticles, polyacrylamide (PAAm) and poly(N-isopropylacrylamide) (PNIPAm). In virtue of the photothermal gel-sol transition of tannin grafted gelatin and Ag-tannin nanoparticles, the patches exert a dual anti-microbial effect and temperature-sensitive snail mucus-like features. In addition, as the "suction-cups" consisting of thermal responsive PNIPAm can undergo a contract-relax transformation, the medical patches can adhere to the objects reversibly and responsively, and release their loaded vascular endothelial growth factor (VEGF) controllably for wound healing. More attractively, benefiting from their fatigue resistance, self-healing ability of the tensile double network hydrogel, and electrical conductivity of Ag-tannin nanoparticles, the proposed patches can report multiple wound physiology parameters sensitively and continuously. Thus, it is believed that this multi-bioinspired patch has immense potential for future wound healing management.
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Affiliation(s)
- Wenzhao Li
- Department of Rheumatology and Immunology, Nanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang325001China
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong KongSAR999077China
| | - Yunru Yu
- Department of Rheumatology and Immunology, Nanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang325001China
| | - Rongkang Huang
- Department of General Surgery and Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of GastroenterologyThe Sixth Affiliated HospitalSun Yat‐sen UniversityGuangdong510655China
| | - Xiaocheng Wang
- Department of Rheumatology and Immunology, Nanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang325001China
| | - Puxiang Lai
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong KongSAR999077China
| | - Kai Chen
- Department of Orthopedics, Shanghai Changhai HospitalNaval Medical UniversityShanghai200433China
| | - Luoran Shang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang325001China
- Shanghai Xuhui Central Hospital, Zhongshan‐Xuhui Hospital, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical SciencesFudan UniversityShanghai200433China
| | - Yuanjin Zhao
- Department of Rheumatology and Immunology, Nanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang325001China
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Liu Y, Yu P, Wu Y, Zhuang J, Wang Z, Li Y, Lai P, Liang J, Gong L. Optical single-pixel volumetric imaging by three-dimensional light-field illumination. Proc Natl Acad Sci U S A 2023; 120:e2304755120. [PMID: 37487067 PMCID: PMC10400974 DOI: 10.1073/pnas.2304755120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/24/2023] [Indexed: 07/26/2023] Open
Abstract
Three-dimensional single-pixel imaging (3D SPI) has become an attractive imaging modality for both biomedical research and optical sensing. 3D-SPI techniques generally depend on time-of-flight or stereovision principle to extract depth information from backscattered light. However, existing implementations for these two optical schemes are limited to surface mapping of 3D objects at depth resolutions, at best, at the millimeter level. Here, we report 3D light-field illumination single-pixel microscopy (3D-LFI-SPM) that enables volumetric imaging of microscopic objects with a near-diffraction-limit 3D optical resolution. Aimed at 3D space reconstruction, 3D-LFI-SPM optically samples the 3D Fourier spectrum by combining 3D structured light-field illumination with single-element intensity detection. We build a 3D-LFI-SPM prototype that provides an imaging volume of ∼390 × 390 × 3,800 μm3 and achieves 2.7-μm lateral resolution and better than 37-μm axial resolution. Its capability of 3D visualization of label-free optical absorption contrast is demonstrated by imaging single algal cells in vivo. Our approach opens broad perspectives for 3D SPI with potential applications in various fields, such as biomedical functional imaging.
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Affiliation(s)
- Yifan Liu
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei230026, China
| | - Panpan Yu
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei230026, China
| | - Yijing Wu
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei230026, China
| | - Jinghan Zhuang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei230026, China
| | - Ziqiang Wang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei230026, China
| | - Yinmei Li
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei230026, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
- Photonics Research Institute, The Hong Kong Polytechnic University, Hong Kong, China
| | - Jinyang Liang
- Laboratory of Applied Computational Imaging, Centre Énergie Matériaux Télécommunications, Institut National de la Recherche Scientifique, Université du Québec, Varennes, QuébecJ3X1P7, Canada
| | - Lei Gong
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei230026, China
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Zhou X, Li G, Wu D, Liang H, Zhang W, Zeng L, Zhu Q, Lai P, Wen Z, Yang C, Pan Y. Recent advances of cellular stimulation with triboelectric nanogenerators. Exploration (Beijing) 2023; 3:20220090. [PMID: 37933231 PMCID: PMC10624380 DOI: 10.1002/exp.20220090] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 12/06/2022] [Indexed: 11/08/2023]
Abstract
Triboelectric nanogenerators (TENGs) are new energy collection devices that have the characteristics of high efficiency, low cost, miniaturization capability, and convenient manufacture. TENGs mainly utilize the triboelectric effect to obtain mechanical energy from organisms or the environment, and this mechanical energy is then converted into and output as electrical energy. Bioelectricity is a phenomenon that widely exists in various cellular processes, including cell proliferation, senescence, apoptosis, as well as adjacent cells' communication and coordination. Therefore, based on these features, TENGs can be applied in organisms to collect energy and output electrical stimulation to act on cells, changing their activities and thereby playing a role in regulating cellular function and interfering with cellular fate, which can further develop into new methods of health care and disease intervention. In this review, we first introduce the working principle of TENGs and their working modes, and then summarize the current research status of cellular function regulation and fate determination stimulated by TENGs, and also analyze their application prospects for changing various processes of cell activity. Finally, we discuss the opportunities and challenges of TENGs in the fields of life science and biomedical engineering, and propose a variety of possibilities for their potential development direction.
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Affiliation(s)
- Xingyu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong‐Hong Kong Joint Laboratory for RNA MedicineMedical Research Center, Sun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Gaocai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong‐Hong Kong Joint Laboratory for RNA MedicineMedical Research Center, Sun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Di Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Huaizhen Liang
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Weifeng Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Lingli Zeng
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong‐Hong Kong Joint Laboratory for RNA MedicineMedical Research Center, Sun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
| | - Qianqian Zhu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon‐Based Functional Materials and DevicesSoochow UniversitySuzhouChina
| | - Puxiang Lai
- Department of Biomedical EngineeringHong Kong Polytechnic UniversityHong KongChina
| | - Zhen Wen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon‐Based Functional Materials and DevicesSoochow UniversitySuzhouChina
| | - Cao Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Yue Pan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong‐Hong Kong Joint Laboratory for RNA MedicineMedical Research Center, Sun Yat‐sen Memorial Hospital, Sun Yat‐sen UniversityGuangzhouChina
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7
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Jiang S, Zhang T, Zhou Y, Lai P, Huang Y. Wearable ultrasound bioelectronics for healthcare monitoring. Innovation (N Y) 2023; 4:100447. [PMID: 37485081 PMCID: PMC10362511 DOI: 10.1016/j.xinn.2023.100447] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 05/22/2023] [Indexed: 07/25/2023] Open
Affiliation(s)
- Shan Jiang
- Hangzhou Institute of Technology, Xidian University, Hangzhou 311200, China
| | - Tianqi Zhang
- Hangzhou Institute of Technology, Xidian University, Hangzhou 311200, China
| | - Yingying Zhou
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
| | - Yuan Huang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Pediatric Cardiac Surgery Center, Fuwai Hospital, Chinese Academy of Medical Sciences, and Peking Union Medical College, Beijing 100037, China
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Huang X, Hui H, Shang W, Gao P, Zhou Y, Pang W, Woo CM, Lai P, Tian J. Deep Penetrating and Sensitive Targeted Magnetic Particle Imaging and Photothermal Therapy of Early-Stage Glioblastoma Based on a Biomimetic Nanoplatform. Adv Sci (Weinh) 2023:e2300854. [PMID: 37150856 DOI: 10.1002/advs.202300854] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/21/2023] [Indexed: 05/09/2023]
Abstract
Early diagnosis can effectively improve the survival of glioblastoma multiforme (GBM). A specific imaging technique that is simultaneously deep penetrating and sensitive to small tissue changes is desired to identify GBM. Due to its excellent features in signal contrast, detection sensitivity, and none or little attenuation in tissue, magnetic particle imaging (MPI) possesses great potential in cancer diagnosis, especially when the imaging modality is equipped with specifically targeted nanoprobes. However, when gliomas are small, the blood-brain barrier (BBB) is complete and prevents nanoprobes from entering the brain, which negates the theranostic effect. This study proposes a biomimetic nanoplatform that assist the MPI tracers in breaking through the BBB and then demonstrate a targeted and sensitive diagnosis of GBM. Afterward, the photothermal therapy and immune regulation show an excellent therapeutic effect on the GBM. It is experimentally confirmed that the MPI signal does not decay with tissue depth and shows excellent sensitivity for thousands-cells. Only small animals are conducted in this study due to the limitations of the current commercial MPI scanner, however, this research theoretically enables large animal and human studies, which encourages a promising pathway toward the noninvasive diagnosis of early-stage GBM in clinics.
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Affiliation(s)
- Xiazi Huang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 000000, China
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518000, China
| | - Hui Hui
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wenting Shang
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Pengli Gao
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yingying Zhou
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 000000, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518000, China
| | - Weiran Pang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 000000, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518000, China
| | - Chi Man Woo
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 000000, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518000, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, 000000, China
- Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518000, China
- Photonic Research Institute, Hong Kong Polytechnic University, Hong Kong, 000000, China
| | - Jie Tian
- CAS Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
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Zhao Q, Li H, Yu Z, Woo CM, Zhong T, Cheng S, Zheng Y, Liu H, Tian J, Lai P. Speckle-Based Optical Cryptosystem and its Application for Human Face Recognition via Deep Learning. Adv Sci (Weinh) 2022; 9:e2202407. [PMID: 35748190 PMCID: PMC9443436 DOI: 10.1002/advs.202202407] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Indexed: 05/30/2023]
Abstract
Face recognition has become ubiquitous for authentication or security purposes. Meanwhile, there are increasing concerns about the privacy of face images, which are sensitive biometric data and should be protected. Software-based cryptosystems are widely adopted to encrypt face images, but the security level is limited by insufficient digital secret key length or computing power. Hardware-based optical cryptosystems can generate enormously longer secret keys and enable encryption at light speed, but most reported optical methods, such as double random phase encryption, are less compatible with other systems due to system complexity. In this study, a plain yet highly efficient speckle-based optical cryptosystem is proposed and implemented. A scattering ground glass is exploited to generate physical secret keys of 17.2 gigabit length and encrypt face images via seemingly random optical speckles at light speed. Face images can then be decrypted from random speckles by a well-trained decryption neural network, such that face recognition can be realized with up to 98% accuracy. Furthermore, attack analyses are carried out to show the cryptosystem's security. Due to its high security, fast speed, and low cost, the speckle-based optical cryptosystem is suitable for practical applications and can inspire other high-security cryptosystems.
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Affiliation(s)
- Qi Zhao
- Department of Biomedical EngineeringHong Kong Polytechnic UniversityHong Kong SAR
- Shenzhen Research InstituteHong Kong Polytechnic UniversityShenzhen518057China
| | - Huanhao Li
- Department of Biomedical EngineeringHong Kong Polytechnic UniversityHong Kong SAR
- Shenzhen Research InstituteHong Kong Polytechnic UniversityShenzhen518057China
| | - Zhipeng Yu
- Department of Biomedical EngineeringHong Kong Polytechnic UniversityHong Kong SAR
- Shenzhen Research InstituteHong Kong Polytechnic UniversityShenzhen518057China
| | - Chi Man Woo
- Department of Biomedical EngineeringHong Kong Polytechnic UniversityHong Kong SAR
- Shenzhen Research InstituteHong Kong Polytechnic UniversityShenzhen518057China
| | - Tianting Zhong
- Department of Biomedical EngineeringHong Kong Polytechnic UniversityHong Kong SAR
- Shenzhen Research InstituteHong Kong Polytechnic UniversityShenzhen518057China
| | - Shengfu Cheng
- Department of Biomedical EngineeringHong Kong Polytechnic UniversityHong Kong SAR
- Shenzhen Research InstituteHong Kong Polytechnic UniversityShenzhen518057China
| | - Yuanjin Zheng
- School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore639798Singapore
| | - Honglin Liu
- Shenzhen Research InstituteHong Kong Polytechnic UniversityShenzhen518057China
- Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai201800China
| | - Jie Tian
- Beijing Advanced Innovation Center for Big Data‐Based Precision Medicine, School of Medical Science and EngineeringBeihang UniversityBeijing100191China
- Key Laboratory of Molecular Imaging, Institute of AutomationChinese Academy of SciencesBeijing100190China
| | - Puxiang Lai
- Department of Biomedical EngineeringHong Kong Polytechnic UniversityHong Kong SAR
- Shenzhen Research InstituteHong Kong Polytechnic UniversityShenzhen518057China
- Photonics Research InstituteHong Kong Polytechnic UniversityHong Kong SAR
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10
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Cheng S, Zhong T, Woo CM, Zhao Q, Hui H, Lai P. Long-distance pattern projection through an unfixed multimode fiber with natural evolution strategy-based wavefront shaping. Opt Express 2022; 30:32565-32576. [PMID: 36242314 DOI: 10.1364/oe.462275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/11/2022] [Indexed: 06/16/2023]
Abstract
Focusing light into an arbitrary pattern through complex media is desired in energy delivery-related scenarios and has been demonstrated feasible with the assistance of wavefront shaping. However, it still encounters challenges in terms of pattern fidelity and focusing contrast, especially in a noisy and perturbed environment. In this work, we show that the strategy relying on natural gradient ascent-based parameter optimization can help to resist noise and disturbance, enabling rapid wavefront optimization towards high-quality pattern projection through complex media. It is revealed that faster convergence and better robustness can be achieved compared with existing phase control algorithms. Meanwhile, a new fitness function based on cosine similarity is adopted for the algorithm, leading to higher focusing contrast without sacrificing similarity to the target pattern. As a result, long-distance projection of an arbitrary pattern can be accomplished with considerably enhanced performance through a 15-meter multimode fiber that is not fixed and susceptible to perturbation. With further engineering, the approach may find special interests for many biomedical applications, such as deep-tissue photon therapy and optogenetics, where free-space localized optical delivery encounters challenges.
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11
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Yu Z, Li H, Zhong T, Park JH, Cheng S, Woo CM, Zhao Q, Yao J, Zhou Y, Huang X, Pang W, Yoon H, Shen Y, Liu H, Zheng Y, Park Y, Wang LV, Lai P. Wavefront shaping: A versatile tool to conquer multiple scattering in multidisciplinary fields. Innovation (N Y) 2022; 3:100292. [PMID: 36032195 PMCID: PMC9405113 DOI: 10.1016/j.xinn.2022.100292] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 07/23/2022] [Indexed: 10/26/2022] Open
Abstract
Optical techniques offer a wide variety of applications as light-matter interactions provide extremely sensitive mechanisms to probe or treat target media. Most of these implementations rely on the usage of ballistic or quasi-ballistic photons to achieve high spatial resolution. However, the inherent scattering nature of light in biological tissues or tissue-like scattering media constitutes a critical obstacle that has restricted the penetration depth of non-scattered photons and hence limited the implementation of most optical techniques for wider applications. In addition, the components of an optical system are usually designed and manufactured for a fixed function or performance. Recent advances in wavefront shaping have demonstrated that scattering- or component-induced phase distortions can be compensated by optimizing the wavefront of the input light pattern through iteration or by conjugating the transmission matrix of the scattering medium. This offers unprecedented opportunities in many applications to achieve controllable optical delivery or detection at depths or dynamically configurable functionalities by using scattering media to substitute conventional optical components. In this article, the recent progress of wavefront shaping in multidisciplinary fields is reviewed, from optical focusing and imaging with scattering media, functionalized devices, modulation of mode coupling, and nonlinearity in multimode fiber to multimode fiber-based applications. Apart from insights into the underlying principles and recent advances in wavefront shaping implementations, practical limitations and roadmap for future development are discussed in depth. Looking back and looking forward, it is believed that wavefront shaping holds a bright future that will open new avenues for noninvasive or minimally invasive optical interactions and arbitrary control inside deep tissues. The high degree of freedom with multiple scattering will also provide unprecedented opportunities to develop novel optical devices based on a single scattering medium (generic or customized) that can outperform traditional optical components.
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12
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Li W, Lai J, Zu Y, Lai P. Cartilage-Inspired Hydrogel Lubrication Strategy. Innovation (N Y) 2022; 3:100275. [PMID: 35845170 PMCID: PMC9278066 DOI: 10.1016/j.xinn.2022.100275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/20/2022] [Indexed: 11/25/2022] Open
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13
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Yu Z, Li H, Zhong T, Lai P. Enhancing spatiotemporal focusing of light deep inside scattering media with Time-Gated Reflection Matrix. Light Sci Appl 2022; 11:167. [PMID: 35650180 PMCID: PMC9160227 DOI: 10.1038/s41377-022-00858-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Time-gated reflection matrix (RM) has been successfully used for optical imaging deep inside scattering media. Recently, this method was extended to enhance the spatiotemporal focusing of light ultra-deep inside scattering media. This is achieved by calibrating the decomposition of the RM with the Tikhonov regularization parameter to convert multiply scattered photons that share the same time of flight with the singly scattered photons into singly scattered photons. Such a capability suggests a reshaping to the interaction mechanism between light and scattering media, which may benefit or inspire wide optical applications that desire enhanced spatiotemporal focusing of light at depths inside scattering media.
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Affiliation(s)
- Zhipeng Yu
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, China
| | - Huanhao Li
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, China
| | - Tianting Zhong
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China.
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, China.
- Photonics Research Institute, The Hong Kong Polytechnic University, Hong Kong SAR, China.
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14
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Li H, Yu Z, Zhao Q, Zhong T, Lai P. Accelerating deep learning with high energy efficiency: from microchip to physical systems. Innovation (N Y) 2022; 3:100252. [PMID: 35602120 PMCID: PMC9118914 DOI: 10.1016/j.xinn.2022.100252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 04/23/2022] [Indexed: 11/27/2022] Open
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15
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Cheng S, Zhou Y, Chen J, Li H, Wang L, Lai P. High-resolution photoacoustic microscopy with deep penetration through learning. Photoacoustics 2022; 25:100314. [PMID: 34824976 PMCID: PMC8604673 DOI: 10.1016/j.pacs.2021.100314] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 11/01/2021] [Accepted: 11/01/2021] [Indexed: 05/18/2023]
Abstract
Optical-resolution photoacoustic microscopy (OR-PAM) enjoys superior spatial resolution and has received intense attention in recent years. The application, however, has been limited to shallow depths because of strong scattering of light in biological tissues. In this work, we propose to achieve deep-penetrating OR-PAM performance by using deep learning enabled image transformation on blurry living mouse vascular images that were acquired with an acoustic-resolution photoacoustic microscopy (AR-PAM) setup. A generative adversarial network (GAN) was trained in this study and improved the imaging lateral resolution of AR-PAM from 54.0 µm to 5.1 µm, comparable to that of a typical OR-PAM (4.7 µm). The feasibility of the network was evaluated with living mouse ear data, producing superior microvasculature images that outperforms blind deconvolution. The generalization of the network was validated with in vivo mouse brain data. Moreover, it was shown experimentally that the deep-learning method can retain high resolution at tissue depths beyond one optical transport mean free path. Whilst it can be further improved, the proposed method provides new horizons to expand the scope of OR-PAM towards deep-tissue imaging and wide applications in biomedicine.
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Affiliation(s)
- Shengfu Cheng
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Yingying Zhou
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Jiangbo Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Huanhao Li
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
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16
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Zhang Y, Wang Y, Lai P, Wang L. Video-Rate Dual-Modal Wide-Beam Harmonic Ultrasound and Photoacoustic Computed Tomography. IEEE Trans Med Imaging 2022; 41:727-736. [PMID: 34694993 DOI: 10.1109/tmi.2021.3122240] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dual-modal ultrasound (US) and photoacoustic (PA) imaging has tremendous advantages in biomedical applications, such as pharmacokinetics, cancer screening, and imaging-guided therapy. Compared with ring-shaped arrays, a linear piezoelectric transducer array applies to more anatomical sites and has been widely used in US/PA imaging. However, the linear array may limit the imaging quality due to narrow bandwidth, partial detection view, or sparse spatial sampling. To meet clinic demand of high-quality US/PA imaging with the linear transducer, we develop dual-modal wide-beam harmonic ultrasound (WBHUS) and photoacoustic computed tomography at video rate. The harmonic US imaging employs pulse phase inversion to reduce clutters and improve spatial resolution. Wide-beam US transmission can shorten the scanning times by 267% and enables a 20-Hz imaging rate, which can minimize motion artifacts in in vivo imaging. The harmonic US imaging does not only provide accurate anatomical references for locating PA features but also reduces artifacts in PA images. The improved image quality allows us to acquire high-resolution anatomical structures in deep tissue without labeling. The fast-imaging speed enables visualizing interventional procedures and monitoring the pulsations of the thoracic aorta and radial artery in real-time. The video-rate dual-modal harmonic US and single-shot PA computed tomography use a clinical-grade linear-array transducer and thus can be readily implemented in clinical US imaging.
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17
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Yao J, Gao Y, Yin Y, Lai P, Ye S, Zheng W. Exploiting the potential of commercial objectives to extend the field of view of two-photon microscopy by adaptive optics. Opt Lett 2022; 47:989-992. [PMID: 35167576 DOI: 10.1364/ol.450973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 01/07/2022] [Indexed: 06/14/2023]
Abstract
Two-photon microscopy (TPM) has provided critical in situ and in vivo information in biomedical studies due to its high resolution, intrinsic optical sectioning, and deep penetration. However, its relatively small field of view (FOV), which is usually determined by objectives, restricts its wide application. In this paper, we propose a segment-scanning sensorless adaptive optics method to extend the FOV and achieve high-resolution and large-FOV two-photon imaging. We demonstrated the proposed method by imaging fluorescent beads, cerebral nerve cells of mouse brain slices, and cerebral vasculature and microglia of live mice. The method extended the FOV of a commercial objective from 1.8 to 3.46 mm while maintaining a lateral resolution of 840 nm and high signal-to-noise ratio. Our technology is compatible with a standard TPM and can be used for large-scale biological exploration.
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18
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Pang W, Wang Y, Guo L, Wang B, Lai P, Xiao J. Two-Dimensional Photoacoustic/Ultrasonic Endoscopic Imaging Based on a Line-Focused Transducer. Front Bioeng Biotechnol 2022; 9:807633. [PMID: 35071214 PMCID: PMC8770734 DOI: 10.3389/fbioe.2021.807633] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/16/2021] [Indexed: 11/13/2022] Open
Abstract
Existing acoustic-resolution photoacoustic/ultrasonic endoscopy (PA/USE) generally employs a point-focused transducer for ultrasound detection, which is only sensitive in its focal region, thus the lateral resolution and sensitivity drop dramatically when the targets move far from its focus. Even if a dynamic focusing algorithm is applied, the sensitivity out of the transducer focus is still much lower than that in the focus in ultrasonic imaging mode. In this work, we propose an acoustic-resolution PA/USE with a line-focused transducer to realize automatic focusing for the first time. In comparison to a point-focused transducer, the line-focused transducer emits a more uniform sound field, causing the original signal intensity and signal-to-noise ratio (SNR) of the front and rear targets to be closer in the radial direction, which is beneficial for improving target signal uniformity in ultrasonic imaging. Simultaneously, we improved the resolution of the defocus area by modifying a prior work of back-projection (BP) reconstruction algorithm typically used in point-focused transducer based PAE and applying it to line-focused PA/USE. This combined approach may significantly enhance the depth of field of ultrasonic imaging and the resolution of the defocus zone in PA/US imaging, compared to the conventional method. Sufficient numerical simulations and phantom experiments were performed to verify this method. The results show that our method can effectively improve the lateral resolution in the image's defocused region to achieve automatic focusing and perfectly solve the defect of the target signal difference in the far-focus region in ultrasonic imaging, while also enhancing the image SNR and contrast. The proposed method in this paper lays foundations for the realization of photoacoustic/ultrasonic combined endoscopy with enhanced lateral resolution and depth of field, which can potentially benefit a many of biomedical applications.
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Affiliation(s)
- Weiran Pang
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha, China.,Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, Hong Kong SAR, China
| | - Yongjun Wang
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha, China
| | - Lili Guo
- Department of Biomedical Engineering, College of Biology, Hunan University, Changsha, China
| | - Bo Wang
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, Hong Kong SAR, China
| | - Jiaying Xiao
- Department of Biomedical Engineering, School of Basic Medical Science, Central South University, Changsha, China
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19
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Abstract
Osteoarthritis (OA) is one of the rapidly growing disability-associated conditions with population aging worldwide. There is a pressing need for precise diagnosis and timely intervention for OA in the early stage. Current clinical imaging modalities, including pain radiography, magnetic resonance imaging, ultrasound, and optical coherent tomography, are limited to provide structural changes when the damage has been established or advanced. It prompts further endeavors in search of novel functional and molecular imaging, which potentially enables early diagnosis and intervention of OA. A hybrid imaging modality based on photothermal effects, photoacoustic imaging, has drawn wide attention in recent years and has seen a variety of biomedical applications, due to its great performance in yielding high-contrast and high-resolution images from structure to function, from tissue down to molecular levels, from animals to human subjects. Photoacoustic imaging has witnessed gratifying potentials and preliminary effects in OA diagnosis. Regarding the treatment of OA, photothermal-triggered therapy has exhibited its attractions for enhanced therapeutic outcomes. In this narrative review, we will discuss photoacoustic imaging for the diagnosis and monitoring of OA at different stages. Structural, functional, and molecular parameter changes associated with OA joints captured by photoacoustics will be summarized, forming the diagnosis perspective of the review. Photothermal therapy applications related to OA will also be discussed herein. Lastly, relevant clinical applications and its potential solutions to extend photoacoustic imaging to deeper OA situations have been proposed. Although some aspects may not be covered, this mini review provides a better understanding of the diagnosis and treatment of OA with exciting innovations based on tissue photothermal effects. It may also inspire more explorations in the field towards earlier and better theranostics of OA.
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20
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Daear W, Sule K, Lai P, Prenner EJ. Biophysical analysis of gelatin and PLGA nanoparticle interactions with complex biomimetic lung surfactant models. RSC Adv 2022; 12:27918-27932. [PMID: 36320247 PMCID: PMC9523518 DOI: 10.1039/d2ra02859j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/22/2022] [Indexed: 11/21/2022] Open
Abstract
Biocompatible materials are increasingly used for pulmonary drug delivery, and it is essential to understand their potential impact on the respiratory system, notably their effect on lung surfactant, a monolayer of lipids and proteins, responsible for preventing alveolar collapse during breathing cycles. We have developed a complex mimic of lung surfactant composed of eight lipids mixed in ratios reported for native lung surfactant. A synthetic peptide based on surfactant protein B was added to better mimic the biological system. This model was used to evaluate the impact of biocompatible gelatin and poly(lactic-co-glycolic acid) nanoparticles. Surface pressure–area isotherms were used to assess lipid packing, film compressibility and stability, whereas the lateral organization was visualized by Brewster angle microscopy. Nanoparticles increased film fluidity and altered the monolayer collapse pressure. Bright protruding clusters formed in their presence indicate a significant impact on the lateral organization of the surfactant film. Altogether, this work indicates that biocompatible materials considered to be safe for drug delivery still need to be assessed for their potential detrimental impact before use in therapeutic applications Biodegradable nanoparticles drastically alters lateral organization of lung surfactant lipid- peptide model system.![]()
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Affiliation(s)
- W. Daear
- Department of Biological Sciences, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - K. Sule
- Department of Biological Sciences, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - P. Lai
- Department of Biological Sciences, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - E. J. Prenner
- Department of Biological Sciences, University of Calgary, Calgary, AB, T2N 1N4, Canada
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21
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He L, Zhang Y, Chen J, Liu G, Zhu J, Li X, Li D, Yang Y, Lee CS, Shi J, Yin C, Lai P, Wang L, Fang C. A multifunctional targeted nanoprobe with high NIR-II PAI/MRI performance for precise theranostics of orthotopic early-stage hepatocellular carcinoma. J Mater Chem B 2021; 9:8779-8792. [PMID: 34635903 DOI: 10.1039/d1tb01729b] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Early diagnosis and effective treatment of hepatocellular carcinoma (HCC) is quite critical for improving patients' prognosis. The combination of second near-infrared window photoacoustic imaging (NIR-II PAI) and T2-magnetic resonance imaging (T2-MRI) is promising for achieving omnibearing information on HCC diagnosis due to the complementary advantages of outstanding optical contrast, high temporospatial resolution and soft-tissue resolution. Thus, the rational design of a multifunctional targeted nanoplatform with outstanding performance in dual-modal NIR-II PAI/T2-MRI is particularly valuable for precise diagnosis and imaging-guided non-invasive photothermal therapy (PTT) of early-stage HCC. Herein, a versatile targeted organic-inorganic hybrid nanoprobe was synthesized as a HCC-specific contrast agent for sensitive and efficient theranostics. The developed multifunctional targeted nanoprobe yielded superior HCC specificity, reliable stability and biocompatibility, high imaging contrast in both NIR-II PAI and T2-MRI, and an excellent photothermal conversion efficiency (74.6%). Furthermore, the theranostic efficiency of the targeted nanoprobe was systematically investigated using the orthotopic early HCC-bearing mice model. The NIR-II PAI exhibited sensitive detection of ultra-small HCCs (diameter less than 1.8 mm) and long-term real-time monitoring of the tumor and nanoprobe targeting process in deep tissues. The T2-MRI demonstrated clear imaging contrast and a spatial relationship between micro-HCC and adjacent structures for a comprehensive description of the tumor. Moreover, when using the targeted nanoprobe, the non-invasively targeted PTT of orthotopic early HCC was carried out under reliable dual-modal imaging guidance with remarkable anti-tumor efficiency and biosafety. This study provides an insight for constructing a multifunctional targeted nanoplatform for precise and comprehensive theranostics of early-stage HCC, which would greatly benefit the patients in the era of precision medicine.
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Affiliation(s)
- Linyun He
- Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China. .,Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China. .,Guangdong Provincial Clinical and Engineering Technology Center of Digital Medicine, Guangzhou 510280, China.,Institute of Digital Intelligence of Zhujiang Hospital of Southern Medical University, Guangzhou, 510280, China
| | - Yachao Zhang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China. .,City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
| | - Jiangbo Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China. .,City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
| | - Gongyuan Liu
- Department of Chemistry, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Jingyi Zhu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China. .,City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
| | - Xiaozhen Li
- Department of Chemistry, City University of Hong Kong, Hong Kong SAR, 999077, China.,Center of Super-Diamond and Advanced Films and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Dengfeng Li
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China. .,City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
| | - Yuqi Yang
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Chun-Sing Lee
- Department of Chemistry, City University of Hong Kong, Hong Kong SAR, 999077, China.,Center of Super-Diamond and Advanced Films and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Jiahai Shi
- Department of Biomedical Sciences, College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Chao Yin
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China.
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, 999077, China. .,The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518057, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China. .,City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
| | - Chihua Fang
- Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China. .,Guangdong Provincial Clinical and Engineering Technology Center of Digital Medicine, Guangzhou 510280, China.,Institute of Digital Intelligence of Zhujiang Hospital of Southern Medical University, Guangzhou, 510280, China
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22
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Banzon T, Bartnikas L, Sheehan W, Perry C, Cunningham A, Harb H, Crestani E, Chatila T, Phipatanakul W, Lai P. A054 ATOPIC DERMATITIS MEDIATES THE ASSOCIATION BETWEEN AN IL4RA VARIANT AND FOOD ALLERGY IN SCHOOL-AGED CHILDREN. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Zhou Y, Liu C, Huang X, Qian X, Wang L, Lai P. Low-consumption photoacoustic method to measure liquid viscosity. Biomed Opt Express 2021; 12:7139-7148. [PMID: 34858705 PMCID: PMC8606139 DOI: 10.1364/boe.444144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/17/2021] [Accepted: 10/19/2021] [Indexed: 05/10/2023]
Abstract
Viscosity measurement is important in many areas of biomedicine and industry. Traditional viscometers are usually time-consuming and require huge sample volumes. Microfluidic viscometry may overcome the challenge of large sample consumption but suffers from a long process time and a complicated structure design and interaction. Here, we present a photoacoustic method that measures the liquid viscosity in a simple microfluidic-based tube. This new viscosity measurement method embraces fast detection speed and low fluid consumption, offering a new tool for efficient and convenient liquid viscosity measurement in a broad range of applications.
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Affiliation(s)
- Yingying Zhou
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
- These authors contributed equally to this work
| | - Chao Liu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- These authors contributed equally to this work
| | - Xiazi Huang
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
- These authors contributed equally to this work
| | - Xiang Qian
- Tsinghua-Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Puxiang Lai
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
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24
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Qi S, Zhang Y, Liu G, Chen J, Li X, Zhu Q, Yang Y, Wang F, Shi J, Lee CS, Zhu G, Lai P, Wang L, Fang C. Plasmonic-doped melanin-mimic for CXCR4-targeted NIR-II photoacoustic computed tomography-guided photothermal ablation of orthotopic hepatocellular carcinoma. Acta Biomater 2021; 129:245-257. [PMID: 34082093 DOI: 10.1016/j.actbio.2021.05.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 05/12/2021] [Accepted: 05/20/2021] [Indexed: 12/15/2022]
Abstract
Effective and noninvasive diagnosis and prompt treatment of early-stage hepatocellular carcinoma (HCC) are urgently needed to reduce its mortality rate. Herein, the integration of high-resolution diagnostic second near-infrared (NIR-II) photoacoustic computed tomography (PACT) and imaging-guided targeted photothermal ablation of orthotopic small HCC (SHCC) is presented for the first time, which was enabled by a plasmonic platinum (Pt)-doped polydopamine melanin-mimic nanoagent. As designed, an antibody-modified nanoagent (designated Pt@PDA-c) with a plasmonic blackbody-like NIR absorption and superior photothermal conversion efficiency (71.3%) selectively targeted and killed CXCR4-overexpressing HCC (HepG2) cells, which was validated in in vitro experiments. The targeted accumulation properties of Pt@PDA-c in vivo were previously recognized by demonstrating effective NIR-II PA imaging and photothermal ablation in a subcutaneous HCC mouse model. Subsequently, with real-time quantitative guidance by PACT for the accurate diagnosis of intraabdominal SHCC (approximately 4 mm depth), the effective and noninvasive photothermal ablation of SHCCs was successfully demonstrated in an orthotopic tumor-bearing mouse model without damaging adjacent liver tissues. These results show a great potential of NIR-II PACT-guided noninvasive photothermal therapy as an innovative phototheranostic approach and expand the biomedical applications of melanin-mimic materials. STATEMENT OF SIGNIFICANCE: In this paper, we report the first diagnostic NIR-II photoacoustic computed tomography (PACT)-guided noninvasive photothermal ablation of small hepatocellular carcinoma (SHCC) located in deep tissues in orthotopic tumor-bearing mice; this process is empowered by a polydopamine-based melanin-mimic tumor-targeting nanoagent doped with plasmonic platinum that provides superior NIR-II (1064 nm) absorption and photothermal conversion efficiency of 71.3%. Following surface modification with anti-CXCR4 antibodies, the nanoagent (namely Pt@PDA-c) can selectively target CXCR4-overexpressed HepG2 carcinoma cells and tumor lesions, and serve as the theranostic agent for both NIR-II PACT-based diagnosis of orthotopic SHCC (diameter less than 5 mm) and efficient NIR-II PTT in vivo. This study may also extend the potential of melanin-derived blackbody materials for optical-biomedical and water distillation applications.
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Yuan D, Luo J, Wu D, Zhang R, Lai P, Li Z, Shen Y. Single-shot ultrasound-modulated optical tomography with enhanced speckle contrast. Opt Lett 2021; 46:3095-3098. [PMID: 34197389 DOI: 10.1364/ol.425535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
Ultrasound-modulated optical tomography (UOT) images optical contrast deep inside biological tissue. Among existing approaches, camera-based parallel detection is beneficial in modulation depth but is limited to the relatively slow framerate of cameras. This condition prevents such a scheme from achieving maturity to image live animals with sub-millisecond speckle correlation time. In this work, we developed on-axis single-shot UOT by investigating the statistics of speckles, breaking the restriction imposed by the slow camera framerate. As a proof of concept, we experimentally imaged a one-dimensional absorptive object buried inside a moving scattering medium with speckle correlation time down to 0.48 ms. We envision that this single-shot UOT is promising to cope with live animals with fast speckle decorrelation.
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Zhao Q, Woo CM, Li H, Zhong T, Yu Z, Lai P. Parameter-free optimization algorithm for iterative wavefront shaping. Opt Lett 2021; 46:2880-2883. [PMID: 34129564 DOI: 10.1364/ol.427215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
Optical focusing through scattering media has a significant impact on optical applications in biological tissues. Recently, iterative wavefront shaping (WFS) has been successfully used to focus light through or inside scattering media, and various heuristic algorithms have been introduced to improve the performance. While these results are encouraging, more efforts are needed to tune parameters towards robust and optimum optimization. Moreover, optimal parameters might differ for different scattering samples and experimental conditions. In this Letter, we propose a "smart" parameter-free algorithm by combining a traditional genetic algorithm with a bat algorithm, and the mutation rate can be automatically calculated through real-time feedback. Using this method in iterative WFS, one can achieve robust and optimum performance without a parameter tuning process.
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Woo CM, Li H, Zhao Q, Lai P. Dynamic mutation enhanced particle swarm optimization for optical wavefront shaping. Opt Express 2021; 29:18420-18426. [PMID: 34154097 DOI: 10.1364/oe.425615] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 05/22/2021] [Indexed: 06/13/2023]
Abstract
Particle swarm optimization (PSO) is a well-known iterative algorithm commonly adopted in wavefront shaping for focusing light through or inside scattering media. The performance is, however, limited by premature convergence in an unstable environment. Therefore, we aim to solve this problem and enhance the focusing performance by adding a dynamic mutation operation into the plain PSO. With dynamic mutation, the "particles," or the optimized masks, are mutated with quantifiable discrepancy between the current and theoretical optimal solution, i.e., the "error rate." Gauged by that, the diversity of the "particles" is effectively expanded, and the adaptability of the algorithm to noise and instability is significantly promoted, yielding optimization approaching the theoretical optimum. The simulation and experimental results show that PSO with dynamic mutation demonstrates considerably better performance than PSO without mutation or with a constant mutation, especially under a noisy environment.
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Lai P, Nie L, Wang L. Special issue "Photoacoustic imaging: microscopy, tomography, and their recent applications in biomedicine" in visual computation for industry, biomedicine, and art. Vis Comput Ind Biomed Art 2021; 4:16. [PMID: 34057606 PMCID: PMC8167028 DOI: 10.1186/s42492-021-00082-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/11/2021] [Indexed: 11/26/2022] Open
Affiliation(s)
- Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, SAR, China.
| | - Liming Nie
- Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Lidai Wang
- Department of Biomedical Engineering, The City University of Hong Kong, Hong Kong, SAR, China
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Huang X, Zhou Y, Woo CM, Pan Y, Nie L, Lai P. Multifunctional layered black phosphorene-based nanoplatform for disease diagnosis and treatment: a review. Front Optoelectron 2020; 13:327-351. [PMID: 36641565 PMCID: PMC9743864 DOI: 10.1007/s12200-020-1084-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 10/01/2020] [Indexed: 05/05/2023]
Abstract
As an outstanding two-dimensional material, black phosphorene, has attracted significant attention in the biomedicine field due to its large surface area, strong optical absorption, distinct bioactivity, excellent biocompatibility, and high biodegradability. In this review, the preparation and properties of black phosphorene are summarized first. Thereafter, black phosphorene-based multifunctional platforms employed for the diagnosis and treatment of diseases, including cancer, bone injuries, brain diseases, progressive oxidative diseases, and kidney injury, are reviewed in detail. This review provides a better understanding of the exciting properties of black phosphorene, such as its high drug-loading efficiency, photothermal conversion capability, high 1O2 generation efficiency, and high electrical conductivity, as well as how these properties can be exploited in biomedicine. Finally, the research perspectives of black phosphorene are discussed.
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Affiliation(s)
- Xiazi Huang
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, China
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518057, China
| | - Yingying Zhou
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, China
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518057, China
| | - Chi Man Woo
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, China
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518057, China
| | - Yue Pan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Liming Nie
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnosis & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Puxiang Lai
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, China.
- Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518057, China.
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30
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Wang S, Chen R, Yu Q, Huang W, Lai P, Tang J, Nie L. Near-Infrared Plasmon-Boosted Heat/Oxygen Enrichment for Reversing Rheumatoid Arthritis with Metal/Semiconductor Composites. ACS Appl Mater Interfaces 2020; 12:45796-45806. [PMID: 32931233 DOI: 10.1021/acsami.0c13261] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease that often causes progressive joint dysfunction, even disability and death in severe cases. The radical improvement of inflammatory cell infiltration and the resulting disorder in oxygen supply is a novel therapeutic direction for RA. Herein, a near-infrared-absorbing metal/semiconductor composite, polyethylene glycol-modified ceria-shell-coated gold nanorod (Au@CeO2), is fabricated for topical photothermal/oxygen-enriched combination therapy for RA in a mouse model. Upon laser irradiation, the photothermal conversion of Au@CeO2 is exponentially enhanced by the localized surface plasma resonance-induced light focusing. The elevated temperature can not only remarkably obliterate hyperproliferative inflammatory cells gathered in diseased joints but also vastly increase the catalase-like activity of ceria to accelerate the decomposition of H2O2 to produce much oxygen, which relieves hypoxia. Significantly, RA-induced lesions are improved, and the expression of proinflammatory cytokines and hypoxia-inducible factors is effectively repressed under the cooperation of heat and oxygen. Overall, the core/shell-structured Au@CeO2 is a promising nanotherapeutic platform that can well realize light-driven heat/oxygen enrichment to completely cure RA from the perspective of pathogenesis.
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Affiliation(s)
- Shasha Wang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, P. R. China
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnosis & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, P. R. China
| | - Ronghe Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnosis & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, P. R. China
| | - Qian Yu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnosis & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, P. R. China
| | - Wenchao Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnosis & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, P. R. China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, P. R. China
| | - Jianxin Tang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, P. R. China
| | - Liming Nie
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnosis & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, P. R. China
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Zhou Y, Liang S, Li M, Liu C, Lai P, Wang L. Optical-resolution photoacoustic microscopy with ultrafast dual-wavelength excitation. J Biophotonics 2020; 13:e201960229. [PMID: 32049415 DOI: 10.1002/jbio.201960229] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/30/2020] [Accepted: 02/04/2020] [Indexed: 05/07/2023]
Abstract
Fast functional and molecular photoacoustic microscopy requires pulsed laser excitations at multiple wavelengths with enough pulse energy and short wavelength-switching time. Recent development of stimulated Raman scattering in optical fiber offers a low-cost laser source for multiwavelength photoacoustic imaging. In this approach, long fibers temporally separate different wavelengths via optical delay. The time delay between adjacent wavelengths may eventually limits the highest A-line rate. In addition, a long-time delay in fiber may limit the highest pulse energy, leading to poor image quality. In order to achieve high pulse energy and ultrafast dual-wavelength excitation, we present optical-resolution photoacoustic microscopy with ultrafast dual-wavelength excitation and a signal separation method. The signal separation method is validated in numerical simulation and phantom experiments. We show that when two photoacoustic signals are partially overlapped with a 50-ns delay, they can be recovered with 98% accuracy. We apply this ultrafast dual-wavelength excitation technique to in vivo OR-PAM. Results demonstrate that A-lines at two wavelengths can be successfully separated, and sO2 values can be reliably computed from the separated data. The ultrafast dual-wavelength excitation enables fast functional photoacoustic microscopy with negligible misalignment among different wavelengths and high pulse energy, which is important for in vivo imaging of microvascular dynamics.
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Affiliation(s)
- Yingying Zhou
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong
- Department of Biomedical Engineering, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Siyi Liang
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong
| | - Mingsheng Li
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong
| | - Chengbo Liu
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Puxiang Lai
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
- Department of Biomedical Engineering, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong
- Department of Biomedical Engineering, City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
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32
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Zhou Y, Cao F, Li H, Huang X, Wei D, Wang L, Lai P. Photoacoustic imaging of microenvironmental changes in facial cupping therapy. Biomed Opt Express 2020; 11:2394-2401. [PMID: 32499932 PMCID: PMC7249831 DOI: 10.1364/boe.387985] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/18/2020] [Accepted: 03/02/2020] [Indexed: 05/21/2023]
Abstract
As a traditional medicine practice, cupping therapy has been widely used to relieve symptoms like fatigue, tension, and muscle pain. During the therapy, negative pressure is applied to the skin for a while with an intention to enhance blood circulation or induce micro-bleeding. The therapeutic effect, however, is not clear due to the lack of direct quantification. Aiming at a quantitative assessment of the treatment effect, we explore optical-resolution photoacoustic microscopy (OR-PAM) in monitoring the structural and functional changes after cupping. We find that, after 5-minutes of ∼ 20 kPa negative pressure cupping, more capillaries appear in the focus, and micro-blooding is observed from the capillaries. We quantify the images and find the blood vessel density is increased by 64%, and the total hemoglobin concentration in both the veins and the arteries exhibits 62% and 40% elevation, respectively. Oxygen saturation in the vein and artery decreased by 17% and 3% right after cupping, respectively. After two hours of recovery, the three blood-related parameters return to their original levels, indicating that the effects in the tissue last only a short period after cupping at the given pressure and time duration. Note that no significant cupping marks are induced with the treatment parameters in this study. This work proposes OR-PAM to quantitatively monitor and evaluate the effect of cupping therapy from the perspective of imaging. The method is also useful for accurate control of the therapeutic outcome.
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Affiliation(s)
- Yingying Zhou
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
- These authors contributed equally to this work
| | - Fei Cao
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
- These authors contributed equally to this work
| | - Huanhao Li
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Xiazi Huang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Dongshan Wei
- School of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
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33
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Zhao E, Lai P, Xu Y, Zhang G, Chen S. Fluorescent Materials With Aggregation-Induced Emission Characteristics for Array-Based Sensing Assay. Front Chem 2020; 8:288. [PMID: 32391322 PMCID: PMC7193080 DOI: 10.3389/fchem.2020.00288] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 03/23/2020] [Indexed: 12/12/2022] Open
Abstract
Array-based sensing is a powerful tool for identifying analytes in complex environments with unknown interferences. In array-based sensing, the sensors, which transduce binding details to signal outputs, are of crucial importance for identifying analytes. Aggregation-induced emission luminogens (AIEgens) enjoy the advantages of easy synthesis and high sensitivity, which enable them to facilely form a sensor pool through structural modifications and sensitively reflect the subtle changes associated with binding events. All these features make AIEgens excellent candidates for array-based sensing, and attempts have been made by several research groups to explore their potentials in array-based sensing. In this review, we introduce the recent progresses of employing AIEgens as sensors in sensing assays and in building up sensor arrays for identification of varied biological analytes, including biomolecules and bacteria. Examples are selected to illustrate the working mechanism, probe design and selection, capability of the sensor array, and implications of these sensing methods.
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Affiliation(s)
- Engui Zhao
- School of Chemical Engineering and Energy Technology and Engineering Research Center of None-food Biomass Efficient Pyrolysis and Utilization Technology of Guangdong Higher Education Institutes, Dongguan University of Technology, Dongguan, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - Yongjun Xu
- School of Chemical Engineering and Energy Technology and Engineering Research Center of None-food Biomass Efficient Pyrolysis and Utilization Technology of Guangdong Higher Education Institutes, Dongguan University of Technology, Dongguan, China
| | - Gang Zhang
- School of Chemical Engineering and Energy Technology and Engineering Research Center of None-food Biomass Efficient Pyrolysis and Utilization Technology of Guangdong Higher Education Institutes, Dongguan University of Technology, Dongguan, China
| | - Sijie Chen
- Ming Wai Lau Centre for Reparative Medicine, Karolinska Institutet, Hong Kong, China
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34
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Chen M, Liu H, Liu Z, Lai P, Han S. Expansion of the FOV in speckle autocorrelation imaging by spatial filtering. Opt Lett 2019; 44:5997-6000. [PMID: 32628202 DOI: 10.1364/ol.44.005997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 11/10/2019] [Indexed: 06/11/2023]
Abstract
Optical imaging through inhomogeneous media based on autocorrelations suffers from a limited field of view (FOV), since the optical memory effect (ME) of a scattering medium has its inherent angular extent. Here we successfully expand the angular ME range by exploiting a spatial filtering technique to select low-frequency components, mainly ballistic light and less scattered light, thereby increasing the FOV of the speckle autocorrelation imaging. Both a simulation and experimental verifications are presented. This technique, which is not limited to the discussed 4f structure, can provide a guideline for the design of an optical system to image through scattering media.
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35
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Zhou Y, Chen J, Liu C, Liu C, Lai P, Wang L. Single-shot linear dichroism optical-resolution photoacoustic microscopy. Photoacoustics 2019; 16:100148. [PMID: 31871890 PMCID: PMC6909087 DOI: 10.1016/j.pacs.2019.100148] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/07/2019] [Accepted: 11/08/2019] [Indexed: 05/06/2023]
Abstract
Dichroism is a material property that causes anisotropic light-matter interactions for different optical polarizations. Dichroism relates to molecular types and material morphology and thus can be used to distinguish different dichroic tissues. In this paper, we present single-shot dichroism photoacoustic microscopy that can image tissue structure, linear dichroism, and polarization angle with a single raster scanning. We develop a fiber-based laser system to split one laser pulse into three with different polarization angles, sub-microseconds time delay, and identical pulse energy. A dual-fiber optical-resolution photoacoustic microscopy system is developed to acquire three A-lines per scanning step. In such a way, dichroism imaging can achieve the same speed as single-wavelength photoacoustic microscopy. Moreover, the three polarized pulses originate from one laser pulse, which decreases pulse energy fluctuations and reduces dichroism measurement noise by ∼35 %. The new dichroism photoacoustic imaging technique can be used to image endogenous or exogenous polarization-dependent absorption contrasts, such as dichroic tumor or molecule-labeled tissue.
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Affiliation(s)
- Yingying Zhou
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Jiangbo Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Chao Liu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Chengbo Liu
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China
| | - Lidai Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
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Li H, Cao F, Zhou Y, Yu Z, Lai P. Interferometry-free noncontact photoacoustic detection method based on speckle correlation change. Opt Lett 2019; 44:5481-5484. [PMID: 31730088 DOI: 10.1364/ol.44.005481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Optical speckle patterns occur when a coherent optical wavefront is randomized but such stochastic yet deterministic information about the medium can be decoded. A simple setup is inspired to monitor the decorrelation of speckle patterns within the memory effect range when the medium is photoacoustically perturbated. Experimentally, a linear relationship is confirmed between the speckle correlation change and the peak-to-peak amplitude of the ultrasonic transducer-detected photoacoustic waves, and the detection sensitivity is comparable. Such a plain specklegram-based method may find special interests when no direct contact is allowed between the sample and the photoacoustic detector.
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Zhu K, Zhou B, Lu Y, Lai P, Zhang S, Tan Y. Ultrasound-modulated laser feedback tomography in the reflective mode. Opt Lett 2019; 44:5414-5417. [PMID: 31730071 DOI: 10.1364/ol.44.005414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 10/10/2019] [Indexed: 06/10/2023]
Abstract
A novel method of ultrasound-modulated optical tomography (UOT) detection based on the laser feedback technology is proposed in this Letter. The system has advantages such as a simple structure, high sensitivity, and reflective configuration. Effective penetration depths of up to 9 cm and 5 cm in phantom and biological tissues, respectively, have been demonstrated experimentally. The detection capability is comparable with the state of the art in the transmission mode but with a much lower photon consumption. Although a lot remains to be improved, the proposed method is promising for further development toward practical applications.
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Liu Y, Liu H, Yan H, Liu Y, Zhang J, Shan W, Lai P, Li H, Ren L, Li Z, Nie L. Aggregation-Induced Absorption Enhancement for Deep Near-Infrared II Photoacoustic Imaging of Brain Gliomas In Vivo. Adv Sci (Weinh) 2019; 6:1801615. [PMID: 31016108 PMCID: PMC6469237 DOI: 10.1002/advs.201801615] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 12/10/2018] [Indexed: 05/18/2023]
Abstract
The delineation of brain gliomas margins still poses challenges to precise imaging and targeted therapy, mainly due to strong light attenuation of the skull and high background interference. With deep penetration and high sensitivity, photoacoustic (PA) imaging (PAI) in the second near-infrared (NIR II) window holds great potential for brain gliomas imaging. Herein, mesoionic dye A1094 encapsulated in Arg-Gly-Asp-modified hepatitis B virus core protein (RGD-HBc) is designed and synthesized for effective NIR II PAI of brain gliomas. An aggregation-induced absorption enhancement mechanism is discovered in vitro and in vivo. It is also demonstrated that A1094@RGD-HBc, with an enhanced absorption in the NIR II window, displays ninefold PA signal amplification in vivo, allowing for precise PAI of the brain gliomas at a depth up to 5.9 mm. In addition, with the application of abovementioned agent, high-resolution PAI and ultrasensitive single photon emission computed tomography images of brain gliomas are acquired with accurate co-localization. Collectively, the results suggest great promise of A1094@RGD-HBc for diagnostic imaging and precise delineation of brain gliomas in clinical applications.
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Affiliation(s)
- Yajing Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics& Center for Molecular Imaging and Translational MedicineSchool of Public HealthXiamen UniversityXiamen361102China
| | - Huanhuan Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics& Center for Molecular Imaging and Translational MedicineSchool of Public HealthXiamen UniversityXiamen361102China
| | - Huixiang Yan
- Department of UltrasonographySecond Clinical College of Jinan UniversityShenzhen People's HospitalShenzhen518020China
| | - Yingchao Liu
- Department of NeurosurgeryProvincial Hospital Affiliated to Shandong UniversityShandong250021China
| | - Jinsen Zhang
- Department of NeurosurgeryHuashan HospitalFudan UniversityShanghai200040China
| | - Wenjun Shan
- Department of BiomaterialsCollege of MaterialsXiamen UniversityXiamen361005China
| | - Puxiang Lai
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong Kong999077China
| | - Honghui Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics& Center for Molecular Imaging and Translational MedicineSchool of Public HealthXiamen UniversityXiamen361102China
| | - Lei Ren
- Department of BiomaterialsCollege of MaterialsXiamen UniversityXiamen361005China
| | - Zijing Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics& Center for Molecular Imaging and Translational MedicineSchool of Public HealthXiamen UniversityXiamen361102China
| | - Liming Nie
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics& Center for Molecular Imaging and Translational MedicineSchool of Public HealthXiamen UniversityXiamen361102China
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39
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Yu Z, Xia M, Li H, Zhong T, Zhao F, Deng H, Li Z, Li D, Wang D, Lai P. Implementation of digital optical phase conjugation with embedded calibration and phase rectification. Sci Rep 2019; 9:1537. [PMID: 30733574 PMCID: PMC6367509 DOI: 10.1038/s41598-018-38326-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/13/2018] [Indexed: 11/16/2022] Open
Abstract
Focused and controllable optical delivery beyond the optical diffusion limit in biological tissue has been desired for long yet considered challenging. Digital optical phase conjugation (DOPC) has been proven promising to tackle this challenge. Its broad applications, however, have been hindered by the system’s complexity and rigorous requirements, such as the optical beam quality, the pixel match between the wavefront sensor and wavefront modulator, as well as the flatness of the modulator’s active region. In this paper, we present a plain yet reliable DOPC setup with an embedded four-phase, non-iterative approach that can rapidly compensate for the wavefront modulator’s surface curvature, together with a non-phase-shifting in-line holography method for optical phase conjugation in the absence of an electro-optic modulator (EOM). In experiment, with the proposed setup the peak-to-background ratio (PBR) of optical focusing through a standard ground glass in experiment can be improved from 460 up to 23,000, while the full width at half maximum (FWHM) of the focal spot can be reduced from 50 down to 10 μm. The focusing efficiency, as measured by the value of PBR, reaches nearly 56.5% of the theoretical value. Such a plain yet efficient implementation, if further engineered, may potentially boost DOPC suitable for broader applications.
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Affiliation(s)
- Zhipeng Yu
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, Hong Kong.,Shenzhen Research Institute, Hong Kong Polytechnic University, Shenzhen, 518057, China
| | - Meiyun Xia
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Huanhao Li
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, Hong Kong.,Shenzhen Research Institute, Hong Kong Polytechnic University, Shenzhen, 518057, China
| | - Tianting Zhong
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, Hong Kong.,Shenzhen Research Institute, Hong Kong Polytechnic University, Shenzhen, 518057, China
| | - Fangyuan Zhao
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Hao Deng
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Zihao Li
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, Hong Kong
| | - Deyu Li
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Daifa Wang
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Puxiang Lai
- Department of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong, Hong Kong. .,Shenzhen Research Institute, Hong Kong Polytechnic University, Shenzhen, 518057, China.
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40
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Si D, Azam M, Lai P, Masse S, Nanthakumar K. DOES SGLT2 INHIBITION ALTER CARDIAC ELECTROPHYSIOLOGY IN RABBIT MODEL? Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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41
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Azam M, Si D, Kusha M, Kichigina G, Lai P, Masse S, Bokhari M, Nanthakumar K. EFFECTS OF PKA AND CAMKII INHIBITION ON VENTRICULAR RE-FIBRILLATION FOLLOWING MYOCARDIAL ISCHEMIA. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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42
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Bokhari M, Nanthakumar K, Spears D, Lai P, Masse S, Si D, Billia F, Parker J, Al-Hesayen A, Azam M, Porta-Sanchez A, Riazi S. SAFETY OF CHRONIC CARDIAC RYANODINE RECEPTOR MODULATION: A 10-YEAR EXPERIENCE. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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43
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Lai P, Kadoya K, Nido P, Mehta R. LB1584 Topical application of a new blend of antioxidants reduces oxidative stress and induces mitochondrial activity in 3D cell culture skin model. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.06.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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44
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Yu Z, Huangfu J, Zhao F, Xia M, Wu X, Niu X, Li D, Lai P, Wang D. Time-reversed magnetically controlled perturbation (TRMCP) optical focusing inside scattering media. Sci Rep 2018; 8:2927. [PMID: 29440682 PMCID: PMC5811554 DOI: 10.1038/s41598-018-21258-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/31/2018] [Indexed: 12/02/2022] Open
Abstract
Manipulating and focusing light deep inside biological tissue and tissue-like complex media has been desired for long yet considered challenging. One feasible strategy is through optical wavefront engineering, where the optical scattering-induced phase distortions are time reversed or pre-compensated so that photons travel along different optical paths interfere constructively at the targeted position within a scattering medium. To define the targeted position, an internal guidestar is needed to guide or provide a feedback for wavefront engineering. It could be injected or embedded probes such as fluorescence or nonlinear microspheres, ultrasonic modulation, as well as absorption perturbation. Here we propose to use a magnetically controlled optical absorbing microsphere as the internal guidestar. Using a digital optical phase conjugation system, we obtained sharp optical focusing within scattering media through time-reversing the scattered light perturbed by the magnetic microsphere. Since the object is magnetically controlled, dynamic optical focusing is allowed with a relatively large field-of-view by scanning the magnetic field externally. Moreover, the magnetic microsphere can be packaged with an organic membrane, using biological or chemical means to serve as a carrier. Therefore, the technique may find particular applications for enhanced targeted drug delivery, and imaging and photoablation of angiogenic vessels in tumours.
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Affiliation(s)
- Zhipeng Yu
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, 518057, China
| | - Jiangtao Huangfu
- Laboratory of Applied Research on Electromagnetics (ARE), Zhejiang University, Hangzhou, 310027, China
| | - Fangyuan Zhao
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 102402, China
| | - Meiyun Xia
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 102402, China
| | - Xi Wu
- Laboratory of Applied Research on Electromagnetics (ARE), Zhejiang University, Hangzhou, 310027, China
| | - Xufeng Niu
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 102402, China
| | - Deyu Li
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 102402, China
| | - Puxiang Lai
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
- Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, 518057, China.
| | - Daifa Wang
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
- Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 102402, China.
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45
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Kadoya K, Chung R, Lai P, Nguyen A, Mehta R. LB996 A newly developed pigmentation correcting serum (LYT2) targeting multiple pathway of melanogenesis. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Klein J, Tran W, Lai P, Al-Mahrouki A, Giles A, Czarnota G. Effect of Treatment Sequencing on Tumor Response to Combined Treatment With Ultrasound-Driven Microbubbles and Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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47
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Lai Y, Weng J, Wei X, Qin L, Lai P, Zhao R, Jiang Z, Li B, Lin S, Wang S, Wu Q, Tang Z, Liu P, Pei D, Yao Y, Du X, Li P. Toll-like receptor 2 costimulation potentiates the antitumor efficacy of CAR T Cells. Leukemia 2017; 32:801-808. [PMID: 28841215 DOI: 10.1038/leu.2017.249] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 07/20/2017] [Accepted: 07/24/2017] [Indexed: 01/03/2023]
Abstract
Chimeric antigen receptor (CAR) T-cell immunotherapies have shown unprecedented success in treating leukemia but limited clinical efficacy in solid tumors. Here, we generated 1928zT2 and m28zT2, targeting CD19 and mesothelin, respectively, by introducing the Toll/interleukin-1 receptor domain of Toll-like receptor 2 (TLR2) to 1928z and m28z. T cells expressing 1928zT2 or m28zT2 showed improved expansion, persistency and effector function against CD19+ leukemia or mesothelin+ solid tumors respectively in vitro and in vivo. In a patient with relapsed B-cell acute lymphoblastic leukemia, a single dose of 5 × 104/kg 1928zT2 T cells resulted in robust expansion and leukemia eradication and led to complete remission. Hence, our results demonstrate that TLR2 signaling can contribute to the efficacy of CAR T cells. Further clinical trials are warranted to establish the safety and efficacy of this approach.
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Affiliation(s)
- Y Lai
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - J Weng
- Department of Hematology, Guangdong General Hospital/Guangdong Academy of Medical Sciences, Guangzhou, China
| | - X Wei
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - L Qin
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - P Lai
- Department of Hematology, Guangdong General Hospital/Guangdong Academy of Medical Sciences, Guangzhou, China
| | - R Zhao
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Z Jiang
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - B Li
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - S Lin
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - S Wang
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Q Wu
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Z Tang
- Guangdong Zhaotai InVivo Biomedicine Co. Ltd., Guangzhou, China.,Hunan Zhaotai Yongren Medical Innovation Co. Ltd., Changsha, China
| | - P Liu
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - D Pei
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Y Yao
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - X Du
- Department of Hematology, Guangdong General Hospital/Guangdong Academy of Medical Sciences, Guangzhou, China
| | - P Li
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,Department of Abdominal Surgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China
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48
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Geng S, Weng J, Deng C, Li M, Lu Z, Wu P, Huang X, Lai P, Du X. Expression of PD-1, PD-L1 and PD-L2 in Patients with Myelodysplastic Syndromes and its Clinic Relationship. Leuk Res 2017. [DOI: 10.1016/s0145-2126(17)30296-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Geng S, Weng J, Lin M, Wu P, Deng C, Lu Z, Huang X, Lai P, Zhang H, Du X. The Abnormal Expression of B and T Lymphocyte Attenuator in Patients with Myelodysplastic Syndromes. Leuk Res 2017. [DOI: 10.1016/s0145-2126(17)30297-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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50
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Beheshti M, Foomany FH, Magtibay K, Masse S, Lai P, Asta J, Jaffray DA, Nanthakumar K, Krishnan S, Umapathy K. Modeling Current Density Maps Using Aliev-Panfilov Electrophysiological Heart Model. Cardiovasc Eng Technol 2016; 7:238-53. [PMID: 27357301 DOI: 10.1007/s13239-016-0271-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 06/22/2016] [Indexed: 11/28/2022]
Abstract
Most existing studies of cardiac arrhythmia rely on surface measurements through optical or electrical mapping techniques. Current density imaging (CDI) is a method which enables us to study current pathways inside the tissue. However, this method entails implementation complexities for beating ex vivo hearts. Hence, this work presents an approach to simulate and study the current distributions in different cardiac electrophysiological states. The results are corroborated by experimental data, and they indicate that different states were distinguishable. The CDI simulations can be used for studying cardiac arrhythmias under simulation conditions which are otherwise impossible or difficult to be implemented experimentally.
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Affiliation(s)
- M Beheshti
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, ON, Canada.
| | - F H Foomany
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, ON, Canada
| | - K Magtibay
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, ON, Canada
| | - S Masse
- The Hull Family Cardiac Fibrillation Management Lab, Toronto General Hospital, Toronto, ON, Canada
| | - P Lai
- The Hull Family Cardiac Fibrillation Management Lab, Toronto General Hospital, Toronto, ON, Canada
| | - J Asta
- The Hull Family Cardiac Fibrillation Management Lab, Toronto General Hospital, Toronto, ON, Canada
| | - D A Jaffray
- Princess Margarett Hospital, Toronto, ON, Canada
| | - K Nanthakumar
- The Hull Family Cardiac Fibrillation Management Lab, Toronto General Hospital, Toronto, ON, Canada
| | - S Krishnan
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, ON, Canada
| | - K Umapathy
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, ON, Canada
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