1. Harvard University

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    1. Mentioned In 608 Articles

    2. Systems and methods for providing beam scan patterns for high speed doppler optical frequency domain imaging

      Systems and methods for providing beam scan patterns for high speed doppler optical frequency domain imaging
      An exemplary apparatus and/or an exemplary method can be provided using which, it is possible (e.g., with at least one first arrangement) to measure an amplitude and/or a phase of at least one electromagnetic radiation provided from a particular portion of a sample. Further, it is possible (e.g., using at least one second arrangement) to scan a location of the particular portion along a path from ...
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    3. Collagen Content Limits Optical Coherence Tomography Image Depth in Porcine Vocal Fold Tissue

      Collagen Content Limits Optical Coherence Tomography Image Depth in Porcine Vocal Fold Tissue
      Objective Vocal fold scarring, a condition defined by increased collagen content, is challenging to treat without a method of noninvasively assessing vocal fold structure in vivo. The goal of this study was to observe the effects of vocal fold collagen content on optical coherence tomography imaging to develop a quantifiable marker of disease. Study Design Excised specimen study. Setting Massachusetts Eye and Ear Infirmary. Subjects and Methods Porcine vocal folds ...
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    4. Comparison of swept-source and enhanced depth imaging spectral-domain optical coherence tomography in quantitative characterisation of the optic nerve head

      Comparison of swept-source and enhanced depth imaging spectral-domain optical coherence tomography in quantitative characterisation of the optic nerve head
      Aims To compare swept-source optical coherence tomography (SS-OCT) and enhanced depth imaging spectral-domain OCT (EDI-OCT) in quantitative assessment of optic nerve head (ONH) parameters. Methods In a cross-sectional study, patients with primary open angle glaucoma (POAG) and age-matched control subjects underwent SS-OCT and EDI-OCT B-scans of the ONH in a single visit. Two masked readers independently measured the horizontal and vertical lamina cribrosa depth (LCDH and LCDV, respectively), as well ...
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    5. Massachusetts General Hospital Receives NIH Grant for Cardiac MRI-Tractography In Vivo: Integrated Imaging of Structure and Function

      Massachusetts General Hospital Receives NIH Grant for Cardiac MRI-Tractography In Vivo: Integrated Imaging of Structure and Function
      Massachusetts General Hospital Receives a 2016 NIH Grant for $742,986 for Cardiac MRI-Tractography In Vivo: Integrated Imaging of Structure and Function. The principal investigator is David Sosnovik. The program began in 2013 and ends in 2017. Below is a summary of the proposed work. Pressure overload of the left and right ventricles initially leads to adaptive hypertrophy. This, however, is frequently followed by maladaptive hypertrophy, heart failure and death ...
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    6. In vivo imaging of airway cilia and mucus clearance with micro-optical coherence tomography

      In vivo imaging of airway cilia and mucus clearance with micro-optical coherence tomography
      We have designed and fabricated a 4 mm diameter rigid endoscopic probe to obtain high resolution micro-optical coherence tomography (OCT) images from the tracheal epithelium of living swine. Our common-path fiber-optic probe used gradient-index focusing optics, a selectively coated prism reflector to implement a circular-obscuration apodization for depth-of-focus enhancement, and a common-path reference arm and an ultra-broadbrand supercontinuum laser to achieve high axial resolution. Benchtop characterization demonstrated lateral and axial ...
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    7. Longitudinal, label-free, quantitative tracking of cell death and viability in a 3D tumor model with OCT

      Longitudinal, label-free, quantitative tracking of cell death and viability in a 3D tumor model with OCT
      Three-dimensional in vitro tumor models are highly useful tools for studying tumor growth and treatment response of malignancies such as ovarian cancer. Existing viability and treatment assessment assays, however, face shortcomings when applied to these large, complex, and heterogeneous culture systems. Optical coherence tomography (OCT) is a noninvasive, label-free, optical imaging technique that can visualize live cells and tissues over time with subcellular resolution and millimeters of optical penetration depth ...
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    8. Postdoctoral research position for Biomedical/Optics Engineer Scientist at Harvard Medical School and Wellman Center

      Postdoctoral research position for Biomedical/Optics Engineer Scientist at Harvard Medical School and Wellman Center
      ...mple of a biomechanical system. The goal of the OtoBiomechanics Group in the Otolaryngology Department at the Harvard Medical School is to use the OCT imaging modality combined with computational models and physiological...
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    9. Associations between the Framingham Risk Score and coronary plaque characteristics as assessed by three-vessel optical coherence tomography

      Associations between the Framingham Risk Score and coronary plaque characteristics as assessed by three-vessel optical coherence tomography
      Objectives: This study sought to explore the association between the Framingham Risk Score (FRS) and coronary plaque characteristics assessed by optical coherence tomography (OCT) imaging. Background: Clinical prediction models are useful for identifying high-risk patients. However, coronary events often occur in individuals estimated to be at low risk. Methods: A total of 254 patients with coronary artery disease who underwent three-vessel OCT were divided into tertiles according to FRS. Nonculprit ...
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    10. Attenuation Coefficients, Pixel Intensity, and Texture Analysis as Quantitative Parameters for Analyzing Optical Coherence Tomography Images of Vocal Fold Tissue (Thesis)

      Attenuation Coefficients, Pixel Intensity, and Texture Analysis as Quantitative Parameters for Analyzing Optical Coherence Tomography Images of Vocal Fold Tissue (Thesis)
      Optical coherence tomography is a promising technology to noninvasively assess vocal fold microanatomy. However, many studies using optical coherence tomography to evaluate vocal fold tissue are largely qualitative in nature and lack quantitative measures that might be useful in clinical decision-making. The goal of this thesis was to identify quantitative metrics that can be extracted from optical coherence tomography vocal fold imaging and applied to the surgical subspecialty of Laryngology ...
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    11. Correlation of localized glaucomatous visual field defects and spectral domain optical coherence tomography retinal nerve fiber layer thinning using a modified structure–function map for OCT

      Correlation of localized glaucomatous visual field defects and spectral domain optical coherence tomography retinal nerve fiber layer thinning using a modified structure–function map for OCT
      Purpose To study the correlation between glaucomatous visual field (VF) defects assessed by standard automated perimetry (SAP) and peripapillary retinal nerve fiber layer (RNFL) thinning measured by spectral domain optical coherence tomography (OCT) using a modified OCT-based peripapillary RNFL structurefunction map. Patients and methods Perimetric glaucoma patients and age-matched normal control subjects were recruited from a university hospital clinic. All eyes underwent testing with the Spectralis spectral domain OCT and ...
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    12. Apparatus and methods for producing and/or providing recirculating optical delay(s)

      Apparatus and methods for producing and/or providing recirculating optical delay(s)
      Exemplary apparatus and method can be availed for providing at least one electromagnetic radiation. For example, it is possible to provide at least one first electromagnetic radiation having a frequency that changes over time with a first characteristic period. Further, with at least one hardware arrangement, it is possible to receive and modify the first electromagnetic radiation(s) into at least one second electromagnetic radiation having a frequency that changes ...
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    13. An Elastic Second Skin

      An Elastic Second Skin
      We report the synthesis and application of an elastic, wearable crosslinked polymer layer (XPL) that mimics the properties of normal, youthful skin. XPL is made of a tunable polysiloxane-based material that can be engineered with specific elasticity, contractility, adhesion, tensile strength and occlusivity. XPL can be topically applied, rapidly curing at the skin interface without the need for heat- or light-mediated activation. In a pilot human study, we examined the ...
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    14. Massachusetts General Hospital Receives NIH Grant for Octology: Histology using Optical Coherence Tomography

      Massachusetts General Hospital Receives NIH Grant for Octology: Histology using Optical Coherence Tomography
      Massachusetts General Hospital Receives a 2016 NIH Grant for $253,600 for Octology: Histology using Optical Coherence Tomography.The principal investigator is Burce Fischl. The program began in 2015 and ends in 2017. Below is a summary of the proposed work. While histology remains the gold standard for assessing human neuroanatomy, the procedures for sectioning and hand mounting tissue for microscopic imaging are not substantially different than they were 100 ...
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    15. NinePoint Medical Announces FDA 510(k) Clearance of a Real-Time Targeting Feature for the NvisionVLE® Imaging System and the First Clinical Cases in the U.S.

      NinePoint Medical Announces FDA 510(k) Clearance of a Real-Time Targeting Feature for the NvisionVLE® Imaging System and the First Clinical Cases in the U.S.
      ...d Dr. Douglas K. Pleskow, MD, Beth Israel Deaconess Medical Center, Associate Clinical Professor of Medicine, Harvard Medical School. “The addition of Real-time Targeting will streamline the procedure and provide me with...
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    16. Polarization sensitive optical coherence microscopy for brain imaging

      Polarization sensitive optical coherence microscopy for brain imaging
      Optical coherence tomography (OCT) and optical coherence microscopy (OCM) have demonstrated the ability to investigate cyto- and myelo-architecture in the brain. Polarization-sensitive OCT provides sensitivity to additional contrast mechanisms, specifically the birefringence of myelination and, therefore, is advantageous for investigating white matter fiber tracts. In this Letter, we developed a polarization-sensitive optical coherence microscope (PS-OCM) with a 3.5 m axial and 1.3 m transverse resolution to investigate fiber ...
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    17. 1-15 of 608 1 2 3 4 ... 39 40 41 »
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  2. About Harvard University

    Harvard University

    Harvard University is a private university in Cambridge, Massachusetts, U.S. Founded in 1636 by the colonial Massachusetts legislature Harvard is the oldest institution of higher learning in the United States.  Harvard Medical School  is one of the graduate schools of Harvard University. It is a prestigious American medical school located in the Longwood Medical Area of the Mission Hill neighborhood of Boston, Massachusetts.  Schepens Eye Research Institute fights blindness by developing new technologies, therapies and knowledge to retain and restore vision. Through a continuum of discovery, the Institute works toward a future in which blindness is prevented, alleviated, and, ultimately, cured.