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    • Ilene Schneider

    Freelance writer

    Ilene Schneider is a freelance writer living in Irvine, CA.

    Courtesy of Michael Feld Laboratory, MIT
    FIGURE 1. Images of a cervical-cancer cell were taken using the new imaging technique. Two 3-D images of the cell are shown at left; 2-D slices are seen at right. The green structures represent the nucleus, which surrounds the nucleolus (not visible in these images). The red areas are unidentified cell organelles.
    Optics

    BIOMEDICAL IMAGING: MIT researchers obtain 3-D images of living cells

    Ilene Schneider
    Nov. 1, 2007
    Tomographic phase microscopy can provide detailed images of the activity inside a living cell, without the use of fluorescent markers or other contrast agents that could interfere...
    Courtesy of MIT
    An OCT system developed by MIT researchers scans a 4 × 4 mm region of the retina in just 0.87 s with an average depth resolution of 10 to 15 µm.
    Research

    DIAGNOSTIC IMAGING: OCT takes high-resolution 3-D snapshots of retinal disease

    Ilene Schneider
    July 1, 2007
    Researchers at the Massachusetts Institute of Technology (MIT; Cambridge, MA) have developed a new type of optical-coherence-tomography (OCT) system capable of taking high-resolution...
    Courtesy of University of Toronto
    Nonintrusive, noncontact frequency-domain photothermal radiometry and frequency-domain luminescence rely on 659 and 830 nm diode-laser sources and a mercury cadmium telluride (HgCdTe) photodetector to assess the pits and fissures on the surfaces of human teeth.
    Research

    DIAGNOSTIC IMAGING: IR laser probe detects tooth defects earlier

    Ilene Schneider
    June 1, 2007
    Dentists may soon be able to search for cavities using a painless diode-laser-based technique that can detect cracks or defects at a very early stage and thus help prevent tooth...