1. Massachusetts General Hospital

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    1. Mentioned In 689 Articles

    2. Long-wavelength optical coherence tomography at 1.7 μm for enhanced imaging depth

      Long-wavelength optical coherence tomography at 1.7 μm for enhanced imaging depth
      Multiple scattering in a sample presents a significant limitation to achieve meaningful structural information at deeper penetration depths in optical coherence tomography (OCT). Previous studies suggest that the spectral region around 1.7 m may exhibit reduced scattering coefficients in ... [Opt. Express 16, 19712-19723 (2008)]
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    3. Distance From the Coronary Ostium as a Predictor of Vulnerable Plaque Morphology; An In-vivo Optical Coherence Tomography Study

      Distance From the Coronary Ostium as a Predictor of Vulnerable Plaque Morphology; An In-vivo Optical Coherence Tomography Study
      Background: Plaque morphology predicts its vulnerability to cause acute coronary events; most of which occur due to disruption of lipid-rich thin-cap fibroatheroma (TCFA). Observational studies show that lesions causing acute events are clustered in the proximal coronary artery segments. Aim: To evaluate whether the location of plaque in the coronary vessel is predictive of vulnerable plaque morphology identified by optical coherence tomography (OCT). Methods: OCT was performed in patients undergoing ...
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    4. Imaging system and related techniques

      BACKGROUND OF THE INVENTION As is known in the art, fiber optic endoscopy is typically conducted by transmitting an image through an array of fibers often referred to as a fiber bundle. While successful for a variety of medical and non-medical applications, utilization of an array of fibers to form the image imposes constraints on the cost, diameter, and flexibility of the imaging device. In an attempt to overcome these ...
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    5. Application of maximum likelihood estimator in nano-scale optical path length measurement using spectral-domain optical coherence phase microscopy

      S. M. Motaghian Nezam, C. Joo, G. J. Tearney, J. F. de Boer Spectral-domain optical coherence phase microscopy (SD-OCPM) measures minute phase changes in transparent biological specimens using a common path interferometer and a spectrometer based optical coherence tomography system. The Fourier transform of the acquired interference spectrum in ... [Opt. Express 16, 17186-17195 (2008)]
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    6. Comprehensive microscopy of the esophagus in human patients with optical frequency domain imaging

      Comprehensive microscopy of the esophagus in human patients with optical frequency domain imaging
      ...al microscopy of the entire distal esophagus (∼6.0 cm) in patients. Design A pilot feasibility study. Setting Massachusetts General Hospital. Patients Twelve patients undergoing routine EGD. Results Comprehensive microsc...
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    7. Doppler imaging using spectrally-encoded endoscopy

      Doppler imaging using spectrally-encoded endoscopy
      Dvir Yelin, B. E. Bouma, J. J. Rosowsky, G. J. TearneyThe capability to image tissue motion such as blood flow through an endoscope could have many applications in medicine. Spectrally encoded endoscopy (SEE) is a recently introduced technique that utilizes a single optical fiber and miniature diffractive optics to obtain endoscopic images through ... [Opt. Express 16, 14836-14844 (2008)]
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    8. Apparatus for controlling at least one of at least two sections of at least one fiber

      An apparatus for controlling at least one of at least two sections of at least one fiber can be provided. The apparatus can include an arrangement which may be provided between the first and second sections of a particular continuous fiber of the fibers. A particular one of the first and second sections may be provided in a particular orientation that is perpendicular to an extension of the particular fiber ...
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    9. Comparison of coronary plaque characteristics between diabetic and non-diabetic subjects: An in vivo optical coherence tomography study

      Aims Postmortem series have reported that subjects with diabetes mellitus have coronary plaques with larger necrotic cores and increased macrophage infiltration. Optical coherence tomography (OCT) is a high-resolution imaging modality that allows in vivo characterization of atherosclerotic plaques. Using OCT imaging, we compared in vivo plaque characteristics between diabetic and non-diabetic subjects. Methods Sixty-three patients undergoing cardiac catheterization were enrolled. OCT imaging was performed in culprit coronary arteries. Assessment of ...
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    10. Cardiac Optical Coherence Tomography

      Acute coronary syndromes (ACS) are a major cause of morbidity and mortality in the developed world. The risk of future acute coronary events appears to be largely dependent on the presence of morphologically distinct, atherosclerotic plaques,1 rather than the presence of severely stenotic lesions as assessed by angiography.2 Angiography, however, cannot provide details of the vascular wall and identify these so-called "vulnerable plaques". To identify, study and potentially ...
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    11. Spectral Domain Optical Coherence Tomography for Quantitative Evaluation of Drusen and Associated Structural Changes in Non-Neovascular Age Related Macular Degeneration

      ...public of ^2 Physical Sciences Inc., Andover, Massachusetts, United States ^3 Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, Massachusetts, United States ^4 Boston University, Department of Phy...
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    12. Apparatus And Method For Simultaneous Inspection At Different Depths Based On The Principle Of Frequency Domain Optical Coherence Tomography (Wo 2008/089406)

      Apparatus And Method For Simultaneous Inspection At Different Depths Based On The Principle Of Frequency Domain Optical Coherence Tomography (Wo 2008/089406)
      Exemplary embodiments of an apparatus are provided. For example, the exemplary apparatus can include at least one first arrangement providing at least one first electro- magnetic radiation to a sample, at least one second electro-magnetic radiation to a first reference and at least one third electro-magnetic radiation to a second reference. A frequency of radiation provided by the first arrangement generally varies over time. The exemplary apparatus may also include ...
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    13. In vivo association between positive coronary artery remodelling and coronary plaque characteristics assessed by intravascular optical coherence tomography

      ... Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, GRB 800, Boston, MA 02114, USA 2 Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA 3...
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    14. 631-645 of 689 « 1 2 ... 40 41 42 43 44 45 46 »
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  2. 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).

  3. 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