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Ultrabroadband and multiband infrared/terahertz photodetectors with high sensitivity

Photonics Research 2021年第11期9卷 2167-2175页

作者： JIAQI ZHU HE ZHU MENGJUAN LIU YAO WANG HANLUN XU NASIR ALI HUIYONG DENG ZHIYONG TAN JUNCHENG CAO NING DAI HUIZHEN WU Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China Zhejiang Province Key Laboratory of Quantum Technology and Devices Department of Physicsand State Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhou 310027China State Key Laboratory for Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Key Laboratory of Terahertz Solid-State Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Broadband response is pursued in both infrared(IR)and terahertz(THz)detection technologies,which find their applications in both terrestrial and astronomical ***,we report an ultrabroadband and multiband IR/THz detector based on blocked-impurity-band detecting *** detectors are prepared by implanting phosphorus into germanium(Ge:P),where photoresponses with a P impurity band,a self-interstitial defect band,and a vacancy-P(V-P)pair defect band are realized *** response spectra of the detectors show ultrabroad and dual response bands in a range of 3-28μm(IR band)and 40-165μm(THz band),***,a tiny mid-IR(MIR)band within 3-4.2μm is embedded in the IR *** THz band arises from the P impurity band,whereas the IR and the MIR bands are ascribed to the two defect ***150 m V and 4.5 K,the peak detectivities of the three bands are obtained as 2.9×10^(12) Jones(at 3.9μm),6.8×10^(12) Jones(at 16.3μm),and 9.9×10^(12) Jones(at 116.5μm),*** impressive coverage andsensitivity of the detectors are promising for applications in IR and THz detection technologies.

关键词： multiband bands defect

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Humanoid Intelligent Display Platform for Audiovisual Interaction and Sound Identification

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纳微快报:英文版 2023年第12期15卷 82-98页

作者： Yang Wang Wenli Gao Shuo Yang Qiaolin Chen Chao Ye Hao Wang Qiang Zhang Jing Ren Zhijun Ning Xin Chen Zhengzhong Shao Jian Li Yifan Liu Shengjie Ling School of Physical Science and Technology ShanghaiTech University393 Middle Huaxia RoadShanghai 201210People’s Republic of China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceLaboratory of Advanced MaterialsFudan UniversityShanghai 200433People’s Republic of China School of Textile and Clothing Yancheng Institute of TechnologyJiangsu 224051People’s Republic of China School of Textile Science and Engineering Wuhan Textile UniversityWuhan 430200People’s Republic of China Shanghai Clinical Research and Trial Center 201210 ShanghaiPeople’s Republic of China

This study proposes a rational strategy for the design,fabrication and system integration of the humanoid intelligent display platform(HIDP)to meet the requirements of highly humanized mechanical properties and intelligence for human-machine *** platform’s sandwich structure comprises a middle lightemitting layer and surface electrodes,which consists of silicon elastomer embedded with phosphor and silk fibroin ionoelastomer,*** materials are highly stretchable and resilient,endowing the HIDP with skin-like mechanical properties and applicability in various extreme environments and complex mechanical ***,by establishing the numerical correlation between the amplitude change of animal sounds and the brightness variation,the HIDP realizes audiovisual interaction and successful identification of animal species with the aid of Internet of Things(IoT)and machine learning *** accuracy of species identification reaches about 100%for 200 rounds of random ***,the HIDP can recognize animal species and their corresponding frequencies by analyzing sound characteristics,displaying real-time results with an accuracy of approximately 99%and 93%,*** sum,this study offers a rational route to designing intelligent display devices for audiovisual interaction,which can expedite the application of smart display devices in human-machine interaction,soft robotics,wearable sound-vision system and medical devices for hearing-impaired patients.

关键词： Silk fibroin Ionoelastomer Luminescent display Machine learning Audiovisual interaction

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印度洋东北部全新世pylonioid类放射虫的分类及其种类多样性（英文）

印度洋东北部全新世pylonioid类放射虫的分类及其种类多样性（英...

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中国古生物学会第十二次全国会员代表大会暨第29届学术年会

作者：张兰兰鈴木紀毅 CAS Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanographyChinese Academy of Sciences department of Earth Science Graduate School of ScienceTohoku University

Pylonioid radiolarians show high species diversity in surface sediments of the northeastern Indian *** can be applied as important oceanographic indices in tropical and subtropical oceans,but pylonioid radiolarian identification has presented challenges because of major change in the appearances of specimens in different *** of their internal structures for precise identification has been considered,but this method is not realistic for examining thousands pylonioid specimens embedded on microscopic ***,we have developed practical methods for pylonioid radiolarian identification under transmitted light microscopy with mounted *** procedure begins with confirming the orientations of specimens with respect to the shadow of the central *** orientations were determined under both absolute(Type 1) and relative(Type 2) coordinate systems,morphological groups were identified based on differences in *** names were allocated to these morphological groups with consideration given to morphological variations,ontogenetic changes,and most importantly,whether the holotypes and relevant specimens could be included within these morphological *** study yielded a total of 10 genera and 34 species/subspecies,including three new genera(Sphaeropylolena ***.,Sphaerolarnacillium *** Qiuripylolena ***.) and 20 new species/subspecies in the superfamily Pylonioidea(Larcospira teres ***.,*** ***.,Larcopyle buetschlii chenmuhongi ***.,*** orion ***.,*** ***.,*** ***.,*** ***.,Sphaeropylolena laxa ***.,*** ***.,Phorticium itakii ***.,*** ***.,Sphaerolarnacillium cochleatum ***.,*** ***.,*** ***.,Qiuripylolena chikuchik ***.,*** ***.,Q.? multiconcentrica ***.,Circodiscus biorbiculus ***.,*** ***.,and Tholomura pilula ***.).Following this taxonomic scheme,we confirmed the

关键词： radiolaria Pylonioidea new genus new species Indian Ocean tropical surface sediments

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Vertically aligned Ni/NiO nanocomposites with abundant oxygen deficient hetero-interfaces for enhanced overall water splitting

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Science China Chemistry 2022年第10期65卷 1885-1894页

作者： Hongxia Wang Meiyan Cui Gaoliang Fu Jiaye Zhang Xingyu Ding Irene Azaceta Matthew Bugnet Demie M.Kepaptsoglou Vlado K.Lazarov Victor Ade la Peña O’Shea Freddy E.Oropeza Kelvin H.L.Zhang State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou 450006China department of Physics University of YorkHeslingtonYorkYO105DDUK SuperSTEM Laboratory SciTech Daresbury CampusDaresbury WA44ADUK School of Chemical and Process Engineering Univeristy of LeedsLeeds LS29JTUK Univ Lyon CNRSINSA LyonUCBLMATEISUMR 551069621 VilleurbanneFrance Photoactivated Processes Unit IMDEA Energy InstituteParque Tecnológico de MóstolesAvda.Ramón de la Sagra 328935 MóstolesMadridSpain

The design of heterostructured transition metal-based electrocatalysts with controlled composition and interfaces is key to increasing the efficiency of the water electrolysis and the elucidation of reaction *** this work,we report the synthesis of well-controlled vertically aligned Ni/NiO nanocomposites consisting of Ni nanoclusters embedded in NiO,which result in highly efficient electrocatalysts for overall water *** show that such a high catalytic efficiency toward both the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER)originates from a synergetic effect at Ni/NiO interfaces that significantly reduces the energy barrier for water dissociation,and favours the formation of reactive H*intermediates on the Ni side of the interface,and OH_(ads) on the NiO side of the interface.A study of water chemisorption based on near-ambient pressure photoelectron spectroscopy indicates that the abundant hetero-interfaces in Ni/NiO nanocomposite promote the dissociation of water with a three-fold increase in the surface concentration of OH_(ads) compared with pure *** functional theory calculations indicate that Ni/NiO interface leads to the reduction of the water dissociation energy barrier due to a high concentration of oxygen vacancies at NiO side of the interface,whereas the formation of highly active metallic Ni sites with an optimal value of Gibbs free energy of H*(ΔG_(H*)=−0.16 eV)owes to a favourable adjustment of the electron energetics at the interface,thus accelerating the overall electrochemical water splitting.

关键词： water splitting hydrogen evolution reaction electronic structure heterostructure vertically aligned nanocomposites

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A hybrid network integrating convolution and transformer for thymoma segmentation

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Intelligent Medicine 2023年第3期3卷 164-172页

作者： Jingyuan Li Wenfang Sun Xiulong Feng Karen Mvon Deneen Wen Wang Guangbin Cui Yi Zhang Center for Brain Imaging School of Life Science and TechnologyXidian UniversityXi'anShaanxi 710126China International Joint Research Center for Advanced Medical Imaging and Intelligent Diagnosis and Treatment&Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information School of Life Science and TechnologyXidian UniversityXi'anShaanxi 710126China School of Aerospace Science and Technology Xidian UniversityXi'anShaanxi 710126China department of Radiology Tangdu HospitalFourth Military Medical UniversityNo.4 Xinsi RoadXi'anShaanxi 710038China

Background Manual segmentation of thymoma is an onerous,labor-intensive,and subjective task for ***,the development of an automatic and efficient method for thymoma segmentation can be valuable for the early detection and diagnosis of this *** Three hundred and ten subjects were enrolled in this retrospective study and all underwent CECT *** the scans were manually labeled by four experienced *** successful application of convolution neural networks(CNNs)and Transformer in computer vision led us to propose a hybrid CNN–Transformer architecture,named transformer attention Net(TA-Net),that would allow the utilization of both local information from CNN features and the global information encoded by Transformers.U-Net was used as the basic structure and Transformers were inserted into convolution blocks in the *** addition,attention gates were embedded in skip connections to highlight salient *** of the accuracy,intersection over Union(IoU),Dice score,and Boundary F1 contour matching score(BFScore)between the predicted segmentation and the manual labels were utilized to evaluate segmentation *** For thymoma segmentation using TA-Net,the accuracy,Dice score,IoU,and BFScore were 92.49%,89.92%,83.80%,and 0.8945,respectively,and no significant differences were detected among tumor types and enhanced *** proposed method achieved the best performance when compared with state-of-the-art *** The proposed method,which combines CNNs with Transformer,achives outstanding performance in thymoma segmentation compared with previous ***-Net may provide consistent and reproducible delineation,thereby assisting radiologists in clinical applications.

关键词： Semantic segmentation Convolution neural network Transformer Attention mechanism Thymoma

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1.3 μm emitting SrF2：Nd^3＋ nanoparticles for high contrast in vivo imaging in the second biological window

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Nano Research 2015年第2期8卷 649-665页

作者： Irene Villa Anna Vedda Irene Xochilt Cantarelli Marco Pedroni Fabio Piccinelli Marco Bettinelli Adolfo Speghini Marta Quintanilla Fiorenzo Vetrone Ueslen Rocha Carlos Jacinto Elisa Carrasco Francisco Sanz Rodrfguez Angeles Juarranz Blanca del Rosal Dirk H. Ortgies Patricia Haro Gonzalez Jose Garcia Sole Daniel Jaque Garcia department of Materials Science University of Milano-Bicocca Via R. Cozzi 55 20125 Milano Italy Dipartimento di Biotecnologie Universita di Verona and INSTM UdR Verona Strada le Grazie 15 37134 Verona Italy Institut National de la Recherche Scientifique-Energie Materiaux et Telecommunications Universitd du Quebec Varennes QC PQ J3X 1S2 Canada Grupo de Fotonica e Fluidos Complexos Instituto de Fisica Universidade Federal de Alagoas 57072-970 Maceio Alagoas Brazil Departamento de Biologia Facultad de Ciencias Campus de Cantoblanco Universidad Autdnoma de Madrid Madrid 28049 Spain Fluorescence Imaging Group Departamento de Fisica de Maferiales Facultad de Ciencias Campus de Cantoblanco Universidad Aut6noma de Madrid Madrid 28049 Spain

Novel approaches for high contrast, deep tissue, in vivo fluorescence biomedical imaging are based on infrared-emitting nanoparticles working in the so-called second biological window （1,000-1,400 nm）. This allows for the acquisition of high resolution, deep tissue images due to the partial transparency of tissues in this particular spectral range. In addition, the optical excitation with low energy （infrared） photons also leads to a drastic reduction in the contribution of autofluorescence to the in vivo image. Nevertheless, as is demonstrated here, working solely in this biological window does not ensure a complete removal of autofluorescence as the specimens diet shows a remarkable infrared fluorescence that extends up to 1,100 nm. In this work, we show how the 1,340 nm emission band of Nd3. ions embedded in SrF2 nanoparticles can be used to produce autofluorescence free, high contrast in vivo fluorescence images. It is also dem- onstrated that the complete removal of the food-related infrared autofluorescence is imperative for the development of reliable biodistribution studies.

关键词： fluorescence imaging rare earth dopednanoparticles nanomedicine

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Bifunctional staining for ex vivo determination of area at risk in rabbits with reperfused myocardial infarction

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World Journal of Methodology 2013年第3期3卷 27-38页

作者： Yuanbo Feng Zhan-Long Ma Feng Chen Jie Yu Marlein Miranda Cona Yi Xie Yue Li Yicheng Ni Theragnostic Laboratory Department of Imaging and Pathology Biomedical Sciences Group 3000 KU Leuven Belgium departments of Radiology the First Affiliated Hospital Nanjing Medical University Nanjing 210029 Jiangsu Province China departments of Electronics and Information System (ELIS) Ghent University Sint-Pietersnieuwstraat 25 9000 Gent Belgium Lab of Translational Medicine Jiangsu Academy of Traditional Chinese Medicine nanjing 210028 Jiangsu Province China Radiology Section University Hospitals 3000 Leuven Belgium

AIM: To develop a method for studying myocardial area at risk(AAR) in ischemic heart disease in correlation with cardiac magnetic resonance imaging(c MRI). METHODS: Nine rabbits were anesthetized, intubated and subjected to occlusion and reperfusion of the left circumflex coronary artery(LCx) to induce myocardial infarction(MI). ECG-triggered c MRI with delayed en-hancement was performed at 3.0 T. After euthanasia, the heart was excised with the LCx re-ligated. Bifunctional staining was performed by perfusing the aorta with a homemade red-iodized-oil(RIO) dye. The heart was then agar-embedded for ex vivo magnetic resonance imaging and sliced into 3 mm-sections. The AAR was defined by RIO-staining and digital radiography(DR). The perfusion density rate(PDR) was derived from DR for the AAR and normal myocardium. The MI was measured by in vivo delayed enhancement(i DE) and ex vivo delayed enhancement(e DE) c MRI. The AAR and MI were compared to validate the bifunctional straining for cardiac imaging research. Linear regression with Bland-Altman agreement, one way-ANOVA with Bonferroni's multiple comparison, and paired t tests were applied for ***: All rabbits tolerated well the surgical procedure and subsequent c MRI sessions. The openchest occlusion and close-chest reperfusion of the LCx, double suture method and bifunctional staining were successfully applied in all animals. The percentage MI volumes globally(n = 6) and by slice(n = 25) were 36.59% ± 13.68% and 32.88% ± 12.38% on i DE, and 35.41% ± 12.25% and 32.40% ± 12.34% on e DE. There were no significant differences for MI determination with excellent linear regression correspondence(r global = 0.89; r slice = 0.9) between i DE and e DE. The percentage AAR volumes globally(n = 6) and by slice(n = 25) were 44.82% ± 15.18% and 40.04% ± 13.64% with RIO-staining, and 44.74% ± 15.98% and 40.48% ± 13.26% by DR showing high correlation in linear regression analysis(r global = 0.99; r slice = 1.0). The me

关键词： Reperfused Acute myocardial infarction Rabbit model Cardiac magnetic resonance imaging Oil-red-o dye Iodized oil

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Biomass-derived washable composites for accelerating the healing of infected wounds

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BMEMat(BioMedical Engineering Materials) 2023年第4期1卷 117-128页

作者： Fuhang Jiao Wei Zhao Wenbo Zhao Yong Wang Yuan Deng Shulong Chang Junlu Sun Qing Lou Lijun Wang Chong-Xin Shan Ying Xiao Lin Dong Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Materials PhysicsMinistry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhouChina Henan Key Laboratory of Ion-beam Bioengineering School of Physics and MicroelectronicsZhengzhou UniversityZhengzhouChina department of Ophthalmology Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina Shiley Eye Institute University of California San DiegoLa JollaCaliforniaUSA

Advanced sustainable biomedical materials are urgently needed for clinical applications;however,developing biomedical materials with exceptional mechanical and bactericidal properties as well as removable functionalities to reduce unintended secondary injury remains a ***,we report a biomass-derived composite consisting of water-soluble fish gelatin(FG)and antibacterial ZnO@silk fibroin(ZSF)microspheres for potential application as the wound *** ZSF microspheres are embedded in a FG matrix to realize the stretchable,antibacterial,and removable ZSF/FG *** introducing glycerin as the plasticizer,ZSF/FG composites deliver a tensile strength of 4.5 MPa and stretchability of 550%.Acting as both the germicide and hydrophile components,ZSF microspheres endow the composites with excellent antibacterial capacity and water *** prevent secondary injury,the ZSF/FG composites can be easily removed from the wounds by simply exposing them to excess ***,the ZSF/FG composites exhibit favorable biocompatibility and sustain high cell viability of over 100%.The full-thickness skin wound model on infected mice demonstrated an efficient rate of wound closure and a reduced inflammatory *** ZSF/FG composite shows promise to hasten the healing of infected wounds and is expected a promising candidate as wound dressing for clinical therapy.

关键词： biomass silk fibroin washable wound healing ZnO

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Detection of Low-Risk and High-Risk Oncogenic Human Papillomavirus in Archived Tissues from ENT Tumors in Burkina Faso

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Journal of Biosciences and Medicines 2023年第9期11卷 171-180页

作者： Ali Kandé Maïmouna Ilboudo Djénéba Ouermi Ina Marie Angèle Traore Abdoul Karim Ouattara Théodora Mahoukèdè Zohoncon Esther Mah Alima Traore Florencia W. Djigma Dorcas Obiri-Yeboah Henriette Poaty Yvette Marie Chantal Gyebre Olga M. Lompo Charlemagne MR Ouedraogo Jacques Simpore Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA) Ouagadougou Burkina Faso Laboratoire de Biologie moléculaire et de génétique (LABIOGENE) UFR/SVT Université Joseph Ki-Zerbo Ouagadougou Burkina Faso University Post Office Department of Microbiology and Immunology School of Medical Sciences University of Cape Coast Cape Coast Ghana Centre Hospitalier Universitaire Yalgado Ouedraogo Université Joseph Ki-Zerbo Ouagadougou Burkina Faso

Human papillomavirus (HPV) is classified into high-risk HPV (HR-HPV) and HPV (LR-HPV) according to their oncogenic potential. These viruses can be found in the cervix, vagina, vulva, anus and in the ENT sphere. HPV ENT infections can lead to benign or malignant tumors in which we could find both LR-HPV and HR-HPV genotypes. The objective of this study was to investigate the genotypes of HR-HPV and LR-HPV in archived tissue samples derived from both benign and malignant tumors of the ear, nose, and throat (ENT) in Ouagadougou, Burkina Faso. One hundred and twenty formalin-fixed, paraffin-embedded archived tissues of the ENT sphere from 26 benign tumors and 94 malignant tumors were included. The tissues were first deparaffinized with xylem. The extracted DNA was used to test for high-risk and low-risk HPV by Real-Time Multiplex PCR. HPV DNA was found in 57.7% (15/26) of benign tumors and 43.61% (41/94) of malignant tumors. The prevalence of HPV infection was 46.67% (56/120) in all tumors combined. The most common HPV genotypes found were HPV 11 (34.28%), HPV 6 (30%), HPV56 (14.28%) and HPV 33 (8.57%). There were 21.43% (12/56) cases of genotypes co-infections with 10 cases of double infection and 2 cases of triple infection. Both low-risk and high-risk HPV are found in ENT tumors with relatively high HPV prevalence.

关键词： HPV Archived Tissues ENT Tumor Burkina Faso

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AB016.A standardized approach to correlating OCT images to histopathology using paraffin embedded specimens:clarification of the ellipsoid zone and new opportunities

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Annals of Eye Science 2018年第1期 422-422页

作者： Sabrina Bergeron Carlos A.Moreira Neto Pablo Zoroquiain Jacqueline Coblentz Miguel N.Burnier The MUHC-McGill University Ocular Pathology Laboratory MontrealQCCanada department of Ophthalmology Federal University of Sao PauloSao PauloBrazil

Background:The aim of this project is to develop a new standardized and cost-efficient method to compare optical coherence tomography(OCT)scans to their corresponding paraffin embedded histopathology sections in post-mortem *** correlation will clarify the interpretation of OCT images,and it will also enable direct immunohistochemical characterization of features observed on ***:Study design:donor eyes were obtained from two separate eye *** order to minimize post-mortem change like retinal detachment and vitreous opacification,the eyes were fixed in a previously tested fixative *** between death and fixation has been kept under 6 ***:Using a customized imaging device,nine post-mortem eyes were imaged with a SD-OCT ***,an 8mm trephine was used to isolate a portion of the posterior pole including the macular area and the optic nerve head for histopathological *** embedded cross sections of the retina were obtained and visually compared to each OCT image(b-scans).Results:To facilitate the correlation of OCT images to their histopathological sections,three principle aspects were controlled during tissue processing:rotation,tilt and *** markings as well as anatomical landmarks,serial histopathological sections in an orientation comparable to OCT b-scans were obtained,thereby facilitating image ***:Compared to other well-established methods using resin and electron microscopy,our standardized Methods allowed us to successfully compare OCT b-scans to serial retinal cross sections of a wider macular area at a lower *** novel approach allows us to translate features observed on OCT images into well-established histopathological images,providing the clinician with additional tools to obtain difficult diagnoses with more confidence.

关键词： Optical coherence tomography(OCT) retina histopathology

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