1. Harvard University

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    1. Mentioned In 479 Articles

    2. Dual modality intravascular optical coherence tomography (OCT) and near-infrared fluorescence (NIRF) imaging: a fully automated algorithm for the distance-calibration of NIRF signal intensity for quantitative molecular imaging

      Dual modality intravascular optical coherence tomography (OCT) and near-infrared fluorescence (NIRF) imaging: a fully automated algorithm for the distance-calibration of NIRF signal intensity for quantitative molecular imaging
      ..., MA, USA Department of Pathology, Harvard Medical School and Massachusetts General Hospital, Boston, MA, USA Harvard-Massachusetts Institute of Technology Health Sciences and Technology, Cambridge, MA, USA ...
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    3. All-fiber wavelength swept ring laser based on Fabry-Perot filter for optical frequency domain imaging

      All-fiber wavelength swept ring laser based on  Fabry-Perot filter for optical frequency domain  imaging
      ...g-Yuhl Oh,^2 and Brett E. Bouma^1,^3 ^1Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA ^2Department of Mechanical Engineering, KAIST, 291 ...
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    4. Longitudinal necrotic shafts near TCFAs—A potential novel mechanism for plaque rupture to trigger ACS?

      Longitudinal necrotic shafts near TCFAs—A potential novel mechanism for plaque rupture to trigger ACS?
      ...ter for Optics and Modern Physics, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA * Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA * Department of Electrical Engineering, ...
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    5. Correction of rotational distortion for catheter-based en face OCT and OCT angiography

      Correction of rotational distortion for catheter-based en face OCT and OCT angiography

      We demonstrate a computationally efficient method for correcting the nonuniform rotational distortion (NURD) in catheter-based imaging systems to improve endoscopic en face optical coherence tomography (OCT) and OCT angiography. The method performs nonrigid registration using fiducial markers on the catheter to correct rotational speed variations. Algorithm performance is investigated with an ultrahigh-speed endoscopic OCT system and micromotor catheter. Scan nonuniformity is quantitatively characterized, and artifacts from rotational speed variations are significantly reduced. Furthermore, we present endoscopic en face OCT and OCT angiography images of human gastrointestinal tract in vivo to demonstrate the image quality improvement using the correction algorithm.

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    6. Anterior Segment Optical Coherence Tomography in the Long-Term Follow-up and Detection of Glaucoma in Boston Type I Keratoprosthesis

      Anterior Segment Optical Coherence Tomography in the Long-Term Follow-up and Detection of Glaucoma in Boston Type I Keratoprosthesis
      ...Université de Montréal, Québec, Canada * Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts , MD , Salima Hassanaly x Salima Hassanaly Search for articles...
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    7. Correlation and Agreement Between Cirrus HD-OCT "RNFL Thickness Map" and Scan Circle Retinal Nerve Fiber Layer Thickness Measurements

      Correlation and Agreement Between Cirrus HD-OCT "RNFL Thickness Map" and Scan Circle Retinal Nerve Fiber Layer Thickness Measurements

      Purpose: To evaluate the correlation and agreement between optical coherence tomography (Cirrus HD-OCT) retinal nerve fiber layer (RNFL) thickness map and scan circle RNFL thickness measurements. Methods: ImageJ and custom Perl scripts were used to derive RNFL thickness measurements from RNFL thickness maps of optic disc scans of healthy and glaucomatous eyes. Average, quadrant, and clock-hour RNFL thickness of the map, and RNFL thickness of the areas inside/outside the scan circle were obtained. Correlation and agreement between RNFL thickness map and scan circle RNFL thickness measurements were evaluated using R2 and Bland-Altman plots, respectively. Results: A total of 104 ...

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    8. Quantitative technique for robust and noise-tolerant speed measurements based on speckle decorrelation in optical coherence tomography

      Quantitative technique for robust and noise-tolerant speed measurements based on speckle decorrelation in optical coherence tomography
      ...Néstor Uribe-Patarroyo,^1,^* Martin Villiger,^1 and Brett E. Bouma^1,^2 ^1Wellman Center for Photomedicine, Harvard Medical School and Massachusetts General Hospital, 40 Blossom Street, Boston, Massachusetts 02114, USA...
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    9. Fully automated detection of diabetic macular edema and dry age-related macular degeneration from optical coherence tomography images

      Fully automated detection of diabetic macular edema and dry age-related macular degeneration from optical coherence tomography images
      ... Duke University, Durham 27708, USA ^3Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Harvard University, Boston, 02114, USA ^4Department of Ophthalmology, Duke University Medical Center, Durham...
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    10. Nonangiographic assessment of coronary artery disease: a practical approach to optical coherence tomography and fractional flow reserve

      Nonangiographic assessment of coronary artery disease: a practical approach to optical coherence tomography and fractional flow reserve

      In an era of increased scrutiny of the appropriateness and safety of revascularization, interventional cardiologists must evolve by adding key tools to their armamentarium. This review highlights the utility of optical coherence tomography and fractional flow reserve in the catheterization lab and provides a practical guide for using these technologies during coronary intervention in various lesion subsets. We propose that fractional flow reserve informs the decision to intervene and optical coherence tomography guides the optimization of the outcome.

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    11. Decreased light attenuation in cerebral cortex during cerebral edema detected using optical coherence tomography

      Decreased light attenuation in cerebral cortex during cerebral edema detected using optical coherence tomography

      Cerebral edema develops in response to a variety of conditions, including traumatic brain injury and stroke, and contributes to the poor prognosis associated with these injuries. This study examines the use of optical coherence tomography (OCT) for detecting cerebral edema in vivo . Three-dimensional imaging of an in vivo water intoxication model in mice was performed using a spectral-domain OCT system centered at 1300 nm. The change in attenuation coefficient was calculated and cerebral blood flow was analyzed using Doppler OCT techniques. We found that the average attenuation coefficient in the cerebral cortex decreased over time as edema progressed. The initial ...

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    12. 1-15 of 479 1 2 3 4 ... 30 31 32 »
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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.