1. James G. Fujimoto

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    1. Mentioned In 439 Articles

    2. Systems and methods for generating and displaying OCT angiography data using variable interscan time analysis

      Systems and methods for generating and displaying OCT angiography data using variable interscan time analysis
      An imaging (e.g., with an optical coherence tomography system) method that includes 1) acquiring repeated B-scans in a manner consistent with forming images, 2) processing the acquired images according to a variable interscan time analysis (VISTA) method, and 3) generating and displaying a color-mapped image pixel color of the color-mapped image fluid flow speed, or a related quantity.
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    3. Maximum A Posteriori Signal Recovery for Optical Coherence Tomography Angiography Image Generation and Denoising

      Maximum A Posteriori Signal Recovery for Optical Coherence Tomography Angiography Image Generation and Denoising
      Optical coherence tomography angiography (OCTA) is a novel and clinically promising imaging modality to image retinal and sub-retinal vasculature. Based on repeated optical coherence tomography (OCT) scans, intensity changes are observed over time and used to compute OCTA image data. OCTA data are prone to noise and artifacts caused by variations in flow speed and patientmovement. We propose a novel iterativemaximuma posteriori signal recovery algorithm in order to generate OCTA ...
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    4. Geometric Perfusion Deficits: A Novel OCT Angiography Biomarker for Diabetic Retinopathy Based on Oxygen Diffusion

      Geometric Perfusion Deficits: A Novel OCT Angiography Biomarker for Diabetic Retinopathy Based on Oxygen Diffusion
      Purpose To develop geometric perfusion deficits (GPD), an optical coherence tomography angiography (OCTA) biomarker based on oxygen diffusion, and to evaluate its utility in a pilot study of healthy subjects and patients with diabetic retinopathy (DR). Design Retrospective cross-sectional study. Methods Commercial spectral-domain OCTA instruments were used to acquire repeated 33 mm 2 and 66 mm 2 motion-corrected macular OCTA volumes. En face OCTA images corresponding to the superficial capillary ...
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    5. The long-term effects of anti-vascular endothelial growth factor therapy on the optical coherence tomography angiographic appearance of neovascularization in age-related macular degeneration

      The long-term effects of anti-vascular endothelial growth factor therapy on the optical coherence tomography angiographic appearance of neovascularization in age-related macular degeneration
      Background The short-term effects of anti-vascular endothelial growth factor (anti-VEGF) treatment on macular neovascularization (MNV) morphology is well described, but long-term studies on morphologic changes and correlation of such changes to the type of MNV have not been conducted. This study aims to determine if different types of MNVs in neovascular AMD (nAMD) behave differently with anti-VEGF treatment as visualized on optical coherence tomography angiography (OCTA). Methods Treatment-nave nAMD patients ...
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    6. High-Speed, Ultrahigh-Resolution Spectral-Domain OCT with Extended Imaging Range Using Reference Arm Length Matching

      High-Speed, Ultrahigh-Resolution Spectral-Domain OCT with Extended Imaging Range Using Reference Arm Length Matching
      Purpose : To develop high-speed, extended-range, ultrahigh-resolution spectral-domain optical coherence tomography (UHR SD-OCT) and demonstrate scan protocols for clinical retinal imaging. Methods : A UHR SD-OCT operating at 840-nm with 150-nm bandwidths was developed. The axial imaging range was extended by dynamically matching reference arm length to the retinal contour during acquisition. Two scan protocols were demonstrated for imaging healthy participants and patients with dry age-related macular degeneration. A high-definition raster protocol ...
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    7. Split-spectrum amplitude-decorrelation angiography with optical coherence tomography

      Split-spectrum amplitude-decorrelation angiography with optical coherence tomography
      Amplitude decorrelation measurement is sensitive to transverse flow and immune to phase noise in comparison to Doppler and other phase-based approaches. However, the high axial resolution of OCT makes it very sensitive to the pulsatile bulk motion noise in the axial direction. To overcome this limitation, we developed split-spectrum amplitude-decorrelation angiography (SSADA) to improve the signal-to-noise ratio (SNR) of flow detection. The full OCT spectrum was split into several narrower ...
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    8. Ultrahigh Resolution Spectral Domain Optical Coherence Tomography for the Assessment of Micro-Structural Changes in Central Serous Chorioretinopathy: A Pilot Study.

      Ultrahigh Resolution Spectral Domain Optical Coherence Tomography for the Assessment of Micro-Structural Changes in Central Serous Chorioretinopathy: A Pilot Study.
      Purpose : In central serous chorioretinopathy (CSCR), choroidal hyperpermeability associated with retinal pigment epithelium (RPE) impairment causes a leakage of fluid from the choroid into the subretinal space, with potential damage to the photoreceptors. We hypothesize that ultrahigh-resolution spectral domain optical coherence tomography (UHR SD-OCT) will enable more detailed assessment of structural changes in this condition. Methods : Patients in all stages of CSCR (acute, chronic and post-resolution) were imaged using an ...
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    9. Evaluating the long-term effects of anti-vascular endothelial growth factor therapy on choroidal neovascularization in age-related macular degeneration using optical coherence tomography angiography

      Evaluating the long-term effects of anti-vascular endothelial growth factor therapy on choroidal neovascularization in age-related macular degeneration using optical coherence tomography angiography
      Purpose : Optical coherence tomography angiography (OCTA) allows for precise, non-invasive monitoring of changes to choroidal neovascularization (CNV) structure over time. The short-term effects of anti-vascular endothelial growth factor (anti-VEGF) treatment on CNV morphology is well described, but long-term studies on morphologic changes and correlation of such to the type of CNV have not been conducted. This study aims to determine if different types of CNVs in neovascular AMD (nAMD) behave ...
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    10. Ultrahigh-Resolution Optical Coherence Tomography Investigation of Age-Related Changes in the Photoreceptors, Retinal Pigment Epithelium and Bruch’s Membrane

      Ultrahigh-Resolution Optical Coherence Tomography Investigation of Age-Related Changes in the Photoreceptors, Retinal Pigment Epithelium and Bruch’s Membrane
      Purpose : Aging is the biggest risk factor for age-related macular degeneration (AMD). Previous histological and ultrastructural studies have suggested that photoreceptors (PR), retinal pigment epithelium (RPE), and Bruchs membrane (BM) undergo changes with aging and in AMD. A new high-speed, ultrahigh-resolution optical coherence tomography (UHR OCT) prototype instrument with depth tracking and software motion correction was used to investigate PR/RPE/BM alterations in normal aging and early AMD. Methods ...
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    11. Analyzing Relative Flow Speeds in Diabetic Retinopathy Using Variable Interscan Time Analysis Optical Coherence Tomography Angiography

      Analyzing Relative Flow Speeds in Diabetic Retinopathy Using Variable Interscan Time Analysis Optical Coherence Tomography Angiography
      Objective Further insight into the flow characteristics of the vascular features associated with diabetic retinopathy (DR) may improve assessment and treatment of disease progression. The variable interscan time analysis (VISTA) algorithm is an extension of optical coherence tomography angiography (OCTA) that detects relative blood flow speeds which can then be depicted on a color-coded map. This study utilized VISTA to analyze relative blood flow speeds in the microvascular changes associated ...
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    12. Macular and Peripapillary OCTA Metrics Predict Progression in Diabetic Retinopathy: A Sub-analysis of TIME-2b Study Data

      Macular and Peripapillary OCTA Metrics Predict Progression in Diabetic Retinopathy: A Sub-analysis of TIME-2b Study Data
      Purpose To identify optical coherence tomography angiography (OCTA) derived vessel metrics of the macula and optic nerve head (ONH) that predict diabetic retinopathy (DR) disease progression. Design Secondary analysis of clinical trial data Methods This was a sub-analysis of prospectively collected data from 73 subjects that participated in the TIME-2b Study (Aerpio Pharmaceuticals), a multi-center clinical trial for patients with moderate to severe DR treated with AKB-9778 and followed over ...
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    13. Tethered capsule en face optical coherence tomography for imaging Barrett’s esophagus in unsedated patients

      Tethered capsule en face optical coherence tomography for imaging Barrett’s esophagus in unsedated patients
      Objective Detection of Barretts esophagus (BE) at points of care outside the endoscopy suite may improve screening access and reduce esophageal adenocarcinoma mortality. Tethered capsule optical coherence tomography (OCT) can volumetrically image esophageal mucosa and detect BE in unsedated patients. We investigated ultrahigh-speed tethered capsule, swept-source OCT (SS-OCT) in unsedated patients, improved device design, developed procedural techniques, measured how capsule contact and longitudinal pullback non-uniformity affect coverage, and assessed patient ...
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    14. Correction propagation for user-assisted optical coherence tomography segmentation: general framework and application to Bruch’s membrane segmentation

      Correction propagation for user-assisted optical coherence tomography segmentation: general framework and application to Bruch’s membrane segmentation
      Optical coherence tomography (OCT) is a commonly used ophthalmic imaging modality. While OCT has traditionally been viewed cross-sectionally (i.e., as a sequence of B-scans), higher A-scan rates have increased interest in en face OCT visualization and analysis. The recent clinical introduction of OCT angiography (OCTA) has further spurred this interest, with chorioretinal OCTA being predominantly displayed via en face projections. Although en face visualization and quantitation are natural for ...
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    15. 1-15 of 439 1 2 3 4 ... 28 29 30 »
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  2. About James G. Fujimoto

    James G. Fujimoto

    James Fujimoto is Elihu Thomson Professor of Electrical Engineering and Computer Science at the Massachusetts Institute of Technology, visiting professor of ophthalmology at Tufts University School of Medicine, and adjunct professor at the Medical University of Vienna. His group and collaborators invented and developed OCT, and he co-founded Advanced Ophthalmic Devices and LightLab Imaging, which developed cardiovascular OCT. He has published over 450 peer-reviewed articles and co-edited 13 books. He is a director of the International Society for Optics and Photonics (SPIE) and general co-chair of the SPIE BIOS symposium, and previously was co-chair of two Conferences on Lasers and Electro Optics and the European Conference on Biomedical Optics, and director of the Optical Society (OSA). He has received the Zeiss Research Award, IEEE Photonics Award, and OSA Ives Medal, and he shared the 2002 Rank Prize in Optoelectronics and 2012 António Champalimaud Vision Prize. He is a member of the National Academy of Engineering, National Academy of Sciences, and American Academy of Arts and Sciences.

  3. Quotes

    1. Rox and I would like to take this opportunity to thank SPIE, program track chairs, conference chairs, and all of you in the com¬munity for the opportunity and the privilege to serve as co-chairs of BiOS all these years.
      In BiOS Hot Topics: Changing of the Guard
    2. The development of OCT in the early 1990s greatly benefited from components and methods used in fiber-optical communications...And still, 25 years later, advances in the optical communications industry continue to greatly benefit OCT.
      In Macro-scale OCT heralds new industrial uses for the technique
    3. Our study demonstrates world-record results in cubic meter volume imaging, with at least an order of magnitude larger depth range and volume compared to previous demonstrations of three-dimensional OCT...These results provide a proof-of-principle demonstration for using OCT in this new regime...Long-range OCT is a new range of operation that requires extremely high performance light sources, integrated optical receivers and signal processing.
      In Researchers achieve meter-scale optical coherence tomography for first time
    4. "The development of OCT in the early 1990s greatly benefited from components and methods used in fiber optical communications,. And still, 25 years later, advances in the optical communications industry continue to greatly benefit OCT.
      In Researchers achieve meter-scale optical coherence tomography for first time
    5. The newest swept-source OCT has the advantage that the light source frequency sweep range and repetition rate can be adjusted to tailor the resolution, imaging range, and axial scan repetition rate for the specific imaging application.
      In Swept-source OCT and glaucoma
    6. We are now approaching a point with OCT where ophthalmologists have a view of the retina that is similar to that of pathologists...In the future, functional imaging will make subtle changes in pathology more measurable, and these advances will enhance sensitivity when monitoring disease progression and response to therapy.
      In How hardware, software advances expand OCT capabilities
    7. Hand-held instruments can enable screening a wider population outside the traditional points of care...The hand-held platform allows the diagnosis or screening to be performed in a much wider range of settings...Developing screening methods that are accessible to the larger population could significantly reduce unnecessary vision loss.
      In Early Detection of Blinding Eye Disease Could be as Easy as Scanning a Barcode
    8. Hand-held instruments can enable screening a wider population outside the traditional points of care.
      In Early Detection of Blinding Eye Disease Could be as Easy as Scanning a Barcode
    9. The hand-held platform allows the diagnosis or screening to be performed in a much wider range of settings.
      In Early Detection of Blinding Eye Disease Could be as Easy as Scanning a Barcode
    10. Partnership between academics and industry was critical for the development of OCT and is a powerful approach for translating new scientific discoveries into real world clinical practice...Clinical researchers on our team as well as other clinicians at leading international medical centers worked with the early OCT technology, exploring new clinical applications and blazing a trail that the broader clinical community could follow. This interdisciplinary approach was key to the success of this technology.
      In MIT Researchers Dr. James Fujimoto and Mr. Eric Swanson Awarded the 2012 António Champalimaud Vision Award