1. 1-11 of 11
    1. Study provides further insight into how Ebola affects the Eye

      Study provides further insight into how Ebola affects the Eye

      Viruses, like Ebola, can stay hidden in our bodies by exploiting a vulnerability in our immune systems. This vulnerability is called "immune privilege," and comes from an old observation that foreign tissue transplanted into certain parts of the body don't elicit the usual immune response. This includes the brain, spinal cord, and eyes. Scientists believe this is because the brain, spinal cord, and eyes are simply too delicate and important to withstand the inflammation that's typical of an immune response to infection. In 2016 an eye team led by Dr Paul Steptoe, compared eye examinations of Ebola survivors ...

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    2. Preserving vision for astronauts

      Preserving vision for astronauts

      Many astronauts who come back from space experience poorer vision after flight, some even years after, and researchers at the University of Alabama at Birmingham are working to see why. Brian Samuels, M.D., assistant professor in the Department of Ophthalmology, and his fellow collaborators from the Georgia Institute of Technology and Emory University recently received a grant to study computational modeling as a method of determining why astronauts who are in space for extended periods of time are experiencing eye pathologies. Samuels is collaborating with scientists at the NASA Glenn Research Center, and others, to help identify the cause ...

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    3. Guiding coronary stent implantation

      Guiding coronary stent implantation

      Although percutaneous coronary intervention (PCI) is most commonly guided by angiography alone, results from a new study investigating adjunctive imaging modalities showed that the use of a novel optical coherence tomography (OCT)-based stent sizing strategy results in similar minimal stent area (MSA) compared to intravascular ultrasound (IVUS)-guided PCI. Imaging-guided PCI (with both OCT and IVUS) also resulted in improved stent expansion and acute stent-based procedural success compared to angiography-guided PCI.

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    4. Frequency combs in molecular fingerprint region

      Frequency combs in molecular fingerprint region

      Silicon nanowire optical waveguides dramatically broaden mid-infrared frequency comb spectra, scientists report. Frequency combs are commercially available in the visible and near-infrared spectral ranges. The mid-infrared spectral region (2-20?m), however, is still emerging. Many applications in spectroscopy, material science, security and industry process control, or chemical, biological and medical sensing would straightforwardly take advantage of mid-infrared photonics devices of higher performance.

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    5. Laser system shows promise for cataract surgery

      Laser system shows promise for cataract surgery
      ScienceDaily (Nov. 17, 2010) — Imagine trying to cut by hand a perfect circle roughly one-third the size of a penny. Then consider that instead of a sheet of paper, you're working with a scalpel and a thin, elastic, transparent layer of tissue, which both offers resistance and tears easily. And, by the way, you're doing it inside someone's eye, and a slip could result in a serious impairment to vision.
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    6. New measurement technique will help in fight against cancer

      New measurement technique will help in fight against cancer
      A new technique to catch cancer early has taken an important step forward thanks to the UK's National Physical Laboratory. NPL's "phantoms" will ensure an exciting new screening technique can be relied upon by hospitals to identify early signs of cancer. The technique, Optical Coherence Tomography (OCT), is an increasingly popular method for looking beneath the surface of certain materials, notably human tissue. It is higher resolution and much quicker than techniques such as MRI or ultrasound, with no ionising radiation, making it ideal for detecting changes in tissue structure which can indicate the early stages of cancer
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    7. Vulnerable Plaque May Be Easier To Detect Through New Imaging Technology

      Vulnerable Plaque May Be Easier To Detect Through New Imaging Technology
      Research results indicate that optical coherence tomography, a newly evolving imaging method, may be the best tool available to detect vulnerable plaque in coronary arteries. Vulnerable plaque (VP) has been identified as a possible cause of sudden cardiac death, most of which occurs in patients with no history of heart disease. Vulnerable plaque is different from the fibrotic, calcified plaque that grows gradually until a lesion completely occludes an artery. VP is susceptible to sudden rupture, swiftly forming a clot that blocks the flow of blood through a coronary artery, causing a heart attack.
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    8. Physicists Develop Laser With Bandwith Spanning Two Telecom Windows

      Physicists have developed new near-infrared broadband laser materials with tunability ranges around triple those of earlier crystals. The new crystals have a tunability range of as much as 460 nanometers (nm) and have potential application in such fields as telecommunications, biomedical imaging and remote sensing.
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    9. Sunbathing Tree Frogs' Future Under A Cloud

      ScienceDaily (Nov. 19, 2007) — Animal conservationists in Manchester are turning to physics to investigate whether global warming is responsible for killing sun-loving South American tree frogs. See also: Plants & Animals * Frogs and Reptiles * Trees * Nature Earth & Climate * Exotic Species * Global Warming * Environmental Issues Reference * Frog zoology * True frog * Tree frog * Decline in amphibian populations In a unique collaborative project, r
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    10. Optical Technique Provides Improved 'Virtual Biopsies' Of Internal Surfaces

      Optical Technique Provides Improved 'Virtual Biopsies' Of Internal Surfaces
      A new optical imaging technique, developed at the Wellman Center for Photomedicine at Massachusetts General Hospital (MGH), can provide three-dimensional microscopic views of the inner surfaces of blood vessels and gastrointestinal organs. In their report in the journal Nature Medicine, receiving early online release today, the MGH-Wellman researchers describe using optical frequency-domain imaging (OFDI) to visualize broad areas of the esophagus and coronary arteries of living pigs. The technique is an advance over optical coherence tomography (OCT) -- another noninvasive MGH-developed technology that details much smaller areas -- and could be useful for identifying precancerous lesions and dangerous deposits of plaque in ...
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    1-11 of 11
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