1. Massachusetts General Hospital

    0 Comments Leave a Comment

    46-60 of 670 « 1 2 3 4 5 6 7 ... 43 44 45 »

    1. Mentioned In 670 Articles

    3. Capillary red blood cell velocimetry by phase-resolved optical coherence tomography

      Explore SPIE Digital Library
      Capillary red blood cell velocimetry by phase-resolved optical coherence tomography
      Quantitative measurement of blood flow velocity in capillaries is challenging due to their small size (around 5-10 m), and the discontinuity and single-file feature of RBCs flowing in a capillary. In this work, we present a phase-resolved Optical Coherence Tomography (OCT) method for accurate measurement of the red blood cell (RBC) speed in cerebral capillaries. To account for the discontinuity of RBCs flowing in capillaries, we applied an M-mode scanning ...
      Read Full Article
      Mentions: Massachusetts General Hospital Harvard University David A. Boas

    4. Automated detection of esophageal dysplasia in in vivo optical coherence tomography images of the human esophagus

      Explore SPIE Digital Library Gastroenterology
      Automated detection of esophageal dysplasia in in vivo optical coherence tomography images of the human esophagus
      Catheter-based Optical Coherence Tomography (OCT) devices allow real-time and comprehensive imaging of the human esophagus. Hence, they provide the potential to overcome some of the limitations of endoscopy and biopsy, allowing earlier diagnosis and better prognosis for esophageal adenocarcinoma patients. However, the large number of images produced during every scan makes manual evaluation of the data exceedingly difficult. In this study, we propose a fully automated tissue characterization algorithm, capable ...
      Read Full Article
      Mentions: Guillermo J. Tearney Massachusetts General Hospital Harvard University

    5. Measurement of shear-induced diffusion of red blood cells using dynamic light scattering-optical coherence tomography

      Explore SPIE Digital Library
      Measurement of shear-induced diffusion of red blood cells using dynamic light scattering-optical coherence tomography
      Dynamic Light Scattering-Optical Coherence Tomography (DLS-OCT) takes the advantages of using DLS to measure particle flow and diffusion within an OCT resolution-constrained 3D volume, enabling the simultaneous measurements of absolute RBC velocity and diffusion coefficient with high spatial resolution. In this work, we applied DLS-OCT to measure both RBC velocity and the shear-induced diffusion coefficient within penetrating venules of the somatosensory cortex of anesthetized mice. Blood flow laminar profile measurements ...
      Read Full Article
      Mentions: Massachusetts General Hospital Harvard University Boston University

    6. Nonculprit Plaque Characteristics in Patients With Acute Coronary Syndrome Caused by Plaque Erosion vs Plaque Rupture A 3-Vessel Optical Coherence Tomography Study

      Explore The JAMA Network Cardiology
      Nonculprit Plaque Characteristics in Patients With Acute Coronary Syndrome Caused by Plaque Erosion vs Plaque Rupture A 3-Vessel Optical Coherence Tomography Study
      ...vention optical coherence tomography imaging of all 3 major epicardial coronary arteries were enrolled at the Massachusetts General Hospital Optical Coherence Tomography Registry database. Analysis of the data was conduc...
      Read Full Article
      Mentions: Brigham and Women’s Hospital Massachusetts General Hospital Ik-Kyung Jang

    7. Clinical Translation of Tethered Confocal Microscopy Capsule for Unsedated Diagnosis of Eosinophilic Esophagitis

      Explore Nature Publishing Group Gastroenterology , Microscopy
      Clinical Translation of Tethered Confocal Microscopy Capsule for Unsedated Diagnosis of Eosinophilic Esophagitis
      Esophagogastroduodenoscopy (EGD) is a widely used procedure, posing significant financial burden on both healthcare systems and patients. Moreover, EGD is time consuming, sometimes difficult to tolerate, and suffers from an imperfect diagnostic yield as the limited number of collected biopsies does not represent the whole organ. In this paper, we report on technological and clinical feasibility of a swallowable tethered endomicroscopy capsule, which is administered without sedation, to image large ...
      Read Full Article
      Mentions: Guillermo J. Tearney Massachusetts General Hospital Harvard University

    8. Radiometric model for coaxial single- and multimode optical emission from double-clad fiber

      Explore OSA | OSA Publishing
      Radiometric model for coaxial single- and multimode optical emission from double-clad fiber
      Double-clad fibers (DCFs) are versatile waveguides supporting a single-mode core surrounded by a multimode inner cladding. DCFs are increasingly used for multimodal biomedical applications, such as imaging or therapy, for which the core is typically used for coherent illumination and the inner cladding, to support a concurrent modality. Proper optimization is, however, critical to ensure high optical performance and requires accurate modeling of coaxial single- and multimode output beams. In ...
      Read Full Article
      Mentions: Brett E. Bouma Massachusetts Institute of Technology Massachusetts General Hospital

    9. High-speed optical coherence tomography by circular interferometric ranging

      Explore Nature Publishing Group
      High-speed optical coherence tomography by circular interferometric ranging
      Existing three-dimensional optical imaging methods excel in controlled environments, but are difficult to deploy over large, irregular and dynamic fields. This means that they can be ill-suited for use in areas such as material inspection and medicine. To better address these applications, we developed methods in optical coherence tomography to efficiently interrogate sparse scattering fields, that is, those in which most locations (voxels) do not generate meaningful signal. Frequency comb ...
      Read Full Article
      Mentions: Massachusetts General Hospital Harvard University Benjamin J. Vakoc

    10. Complex differential variance angiography with noise-bias correction for optical coherence tomography of the retina

      Explore OSA | OSA Publishing Ophthalmology
      Complex differential variance angiography with noise-bias correction for optical coherence tomography of the retina
      Complex differential variance (CDV) provides phase-sensitive angiographic imaging for optical coherence tomography (OCT) with immunity to phase-instabilities of the imaging system and small-scale axial bulk motion. However, like all angiographic methods, measurement noise can result in erroneous indications of blood flow that confuse the interpretation of angiographic images. In this paper, a modified CDV algorithm that corrects for this noise-bias is presented. This is achieved by normalizing the CDV signal ...
      Read Full Article
      Mentions: Brett E. Bouma Massachusetts Institute of Technology Heidelberg Engineering

    11. Symposium on Advances in Biomedical Polarimetry, March 12, 2018 in Boston

      Explore Optical Coherence Tomography News
      Symposium on Advances in Biomedical Polarimetry, March 12, 2018 in Boston
      The Center for Biomedical OCT and Research (CBORT) is hosting the Advances in Biomedical Polarimetry with OCT symposium, taking place on Monday March 12, 2018 in Boston. The 1-day program is designed to provide an understanding of the latest PS-OCT instrumentation and signal processing techniques as well as present the use of PS-OCT in numerous biomedical application areas. We anticipate an interdisciplinary group of approximately 125 scientists, engineers, physicists, clinicians ...
      Read Full Article
      Mentions: Brett E. Bouma Massachusetts General Hospital Martin L. Villiger

    12. Optical coherence tomography in gastroenterology: a review and future outlook

      Explore SPIE Digital Library Gastroenterology
      Optical coherence tomography in gastroenterology: a review and future outlook
      Optical coherence tomography (OCT) is an imaging technique optically analogous to ultrasound that can generate depth-resolved images with micrometer-scale resolution. Advances in fiber optics and miniaturized actuation technologies allow OCT imaging of the human body and further expand OCT utilization in applications including but not limited to cardiology and gastroenterology. This review article provides an overview of current OCT development and its clinical utility in the gastrointestinal tract, including disease ...
      Read Full Article
      Mentions: Columbia University Massachusetts General Hospital Harvard University

    13. EROSION Study (Effective Anti-Thrombotic Therapy Without Stenting: Intravascular Optical Coherence Tomography–Based Management in Plaque Erosion)

      Explore Circulation Cardiology
      EROSION Study (Effective Anti-Thrombotic Therapy Without Stenting: Intravascular Optical Coherence Tomography–Based Management in Plaque Erosion)
      Background The initial EROSION study (Effective Anti-Thrombotic Therapy Without Stenting: Intravascular Optical Coherence TomographyBased Management in Plaque Erosion) demonstrated that patients with acute coronary syndrome caused by plaque erosion might be stabilized with aspirin and ticagrelor without stenting for 1 month. However, a long-term evaluation of outcomes is lacking. The aim of this study was to assess whether the initial benefit of noninterventional therapy for patients with acute coronary syndrome ...
      Read Full Article
      Mentions: Massachusetts General Hospital Ik-Kyung Jang Shaosong Zhang

    14. Estimation and compensation of dispersion for high-resolution optical coherence tomography system

      Explore IOPscience
      Estimation and compensation of dispersion for high-resolution optical coherence tomography system
      Balanced reference-sample arm dispersion is critical in optical coherence tomography systems in order to attain images with the highest axial resolution. Here, an experimental method for the estimation and correction of dispersion in an optical coherence tomography system is presented. The system dispersion was computed from two optical coherence tomography images of the reference mirror that were symmetrically placed around the zero delay point. The method was tested using a ...
      Read Full Article
      Mentions: Guillermo J. Tearney Massachusetts General Hospital Harvard University

    15. Prediction of scar size in rats six months after burns based on early post injury polarization-sensitive optical frequency domain imaging

      Explore Frontiers
      Prediction of scar size in rats six months after burns based on early post injury polarization-sensitive optical frequency domain imaging
      Hypertrophic scars remain a major clinical problem in the rehabilitation of burn survivors and lead to physical, aesthetic, functional, psychological, and social stresses. Prediction of healing outcome and scar formation is critical for deciding on the best treatment plan. Both subjective and objective scales have been devised to assess scar severity. Whereas scales of the first type preclude cross-comparison between observers, those of the second type are based on imaging ...
      Read Full Article
      Mentions: Brett E. Bouma Massachusetts General Hospital Harvard University

    16. Characterizing the optical properties of human brain tissue with high numerical aperture optical coherence tomography

      Explore OSA | OSA Publishing Neurology
      Characterizing the optical properties of human brain tissue with high numerical aperture optical coherence tomography
      Quantification of tissue optical properties with optical coherence tomography (OCT) has proven to be useful in evaluating structural characteristics and pathological changes. Previous studies primarily used an exponential model to analyze low numerical aperture (NA) OCT measurements and obtain the total attenuation coefficient for biological tissue. In this study, we develop a systematic method that includes the confocal parameter for modeling the depth profiles of high NA OCT, when the ...
      Read Full Article
      Mentions: Massachusetts General Hospital Harvard University Hui Wang
    17. 46-60 of 670 « 1 2 3 4 5 6 7 ... 43 44 45 »
  1. Search:

  2. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology

    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents

    3. Technology:

      Broadband Sources, Probes, Tunable Sources

    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks

  4. About Massachusetts General Hospital

    Massachusetts General Hospital

    Massachusetts General Hospital is a teaching hospital of Harvard Medical School and biomedical research facility in Boston, Massachusetts. It is owned and operated by Partners HealthCare (which also owns Brigham and Women's Hospital and North Shore Medical Center).

  5. Related Topics

    1. Optical methods for tissue analysis
      592 articles also mentioned Harvard University
    2. Optical coherence tomography (OCT) can successfully identify the characteristics of coronary plaques
      134 articles also mentioned Ik-Kyung Jang
    3. Power-efficient nonreciprocal interferometer and linear-scanning fiber-optic catheter for optical coherence tomography.
      90 articles also mentioned Massachusetts Institute of Technology
    4. High-speed polarization sensitive optical frequency domain imaging with frequency multiplexing
      68 articles also mentioned Benjamin J. Vakoc
    5. 1st Massachusetts General Hospital OCT Registry Symposium Scheduled for March 13, 2010
      63 articles also mentioned Massachusetts General Hospital OCT Registry

  6. Quotes about Massachusetts General Hospital

    1. We are excited to see the publication of this data from our collaborators at Massachusetts General Hospital that clearly demonstrate the imaging technology can produce valuable images of esophageal tissue...We look forward to moving ahead with continued development of this exciting new technology.
      Charles Carignan in NinePoint Medical Imaging Technology Highlighted in Nature Medicine