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Needle-Shaped Beams Enhance OCT Image Quality

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Stanford University researchers have developed a method to create needle-shaped laser beams of varying lengths and diameters, capable of increasing the quality of images obtained by OCT and other imaging modalities. Adam de la Zerda, research team leader from the Stanford University School of Medicine, said that applied to OCT, the needle-shaped beams extended the depth of focus and improved lateral resolution, signal-to-noise ratio, contrast, and image quality over a long depth range. In the past, implementing a specific needle-shaped beam has been difficult due to the lack of an...Read full article

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    Published: August 2022
    Glossary
    optical coherence tomography
    Optical coherence tomography (OCT) is a non-invasive imaging technique used in medical and scientific fields to capture high-resolution, cross-sectional images of biological tissues. It provides detailed, real-time, and three-dimensional visualization of tissue structures at the micrometer scale. OCT is particularly valuable in ophthalmology, cardiology, dermatology, and various other medical specialties. Here are the key features and components of optical coherence tomography: Principle of...
    metalens
    A metalens, short for "metasurface lens," is a type of optical lens that uses nanostructured materials to manipulate light at a subwavelength scale. Unlike traditional lenses made of glass or other transparent materials, metalenses do not rely on the curvature of their surface to refract or focus light. Instead, they use carefully engineered patterns of nanostructures, such as nanoscale antennas or dielectric structures, to control the phase and amplitude of light across the lens's surface....
    Research & TechnologyOpticsImagingBiophotonicsoptical coherence tomographyLasersOCTdepth-of-fieldmetalensMicroscopyStanford UniversityAmericasTechnology News

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