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Clinical microscopy’s changing view

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Hank Hogan, Contributing Editor, [email protected]

For clinical microscopy, the familiar view is changing, as images once seen through eyepieces are increasingly viewed on a screen. The result could be greater collaboration in the operating room, better surgical results and the ability to do pathology at a distance, thereby bringing rare expertise to remote locations. However, don’t count out traditional microscopes just yet. In some situations, they still offer higher resolution. They also are still the only way for a pathologist to make an official determination about a tissue sample. Dr. Mark Packer, associate clinical professor at...Read full article

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    Published: November 2009
    Glossary
    color temperature
    A colorimetric concept related to the apparent visual color of a source (not its temperature). For a blackbody, the color temperature is equal to the temperature in kelvin.
    numerical aperture
    The sine of the vertex angle of the largest cone of meridional rays that can enter or leave an optical system or element, multiplied by the refractive index of the medium in which the vertex of the cone is located. Generally measured with respect to an object or image point, and will vary as that point is moved. The numerical aperture of an optical system is critical in determining the resolution limits along with the diffraction limited spot size of a given optical system.
    resolution
    1. In optics, the ability of a lens system to reproduce the points, lines and surfaces in an object as separate entities in the image. 2. The minimum adjustment increment effectively achievable by a positioning mechanism. 3. In image processing, the accuracy with which brightness, spatial parameters and frame rate are divided into discrete levels.
    screen
    The large, usually flat surface onto which an image is projected for viewing. May be reflecting or transmitting (rear projection).
    BiophotonicsCarl Zeiss Mediteccataract surgeryclinical microscopyColor TemperatureConsumerdigital imagingeyepiecesFeaturesHank HoganimagesImagingJames CarterLorne DaviesLumeraMark Packermicroscope objectivesmicroscopesMicroscopynumerical apertureOHSUOlympus Americaoperating roomOregon Health and Science UniversitypathologyresolutionRobert RealiscreenSensors & DetectorsslidessurgeonTrueVision Systemsxenon lamps

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