CHICAGO, Dec. 3 -- Three-dimensional computed tomography (CT) colonography, also known as virtual colonoscopy, is as sensitive as and less invasive than conventional colonoscopy in screening average-risk patients, according to research presented at the Radiological Society of North America's (RSNA) annual meeting this week. The new technology allows radiologists to obtain 3-D images from different angles, providing a "movie" of the interior of the colon without having to insert a scope. "I believe virtual colonoscopy will eventually join conventional colonoscopy as a major component of...Read full articleRelated content from Photonics MediaWebinarsPrinciples of Laser Power/Energy MeasurementUnderstanding laser behavior requires quantifying key laser characteristics. Regardless of how long you’ve been working with lasers, the subtle differences between the many measurement methods...Photonics.com 6/24/2020Precision Automation Principles for the Optimal Testing and Packaging of PIC DevicesProduction-scale testing of silicon photonic devices continues to be a challenge due to the multi-degree-of freedom, high-precision, optical alignments required for wafer- and die-level testing. Wide...Photonics.com 9/21/2023Barcode Reading: The Not-So-Obvious Path to Deep Learning SolutionsWitherspoon discusses how advancements in deep learning technologies are transforming vision-based inspection systems. He shows how others are successfully using barcode reading as a springboard to...Photonics.com 7/19/2022How the Metalens Will Transform Lens Technology and Everyday DevicesMetalenses — ultrathin planar lenses — represent a revolutionary step in lens design and fabrication, a technology that has remained essentially unchanged for centuries. Metalenses have...Photonics.com 5/9/2018Photonics Dictionary TermsphotometryPhotometry is the branch of science that deals with the measurement of light, particularly in terms of its intensity and the way the human eye perceives it. It involves the quantification of visible...Photonics Dictionaryintegrated circuitMultiple, interconnected circuit elements, contained on or in a common substrate, that function as a unit and not separately.Photonics Dictionarybackward-wave oscillatorAn amplifying device with a wide tuning range in which an electron gun sends a beam of electrons into a slow-wave structure. The electron beam and the electromagnetic wave move in opposite directions...Photonics DictionarybundleA conical or cylindrical package of light rays emanating from a common point on the object.Photonics DictionaryPhotonics Buyers' Guide CategoriesAntireflection CoatingsAn antireflection coating is a thin film or coating applied to optical surfaces, such as lenses or windows, to minimize unwanted reflections and increase the transmission of light through the...Air BearingsLaser Protective FiltersInfrared DetectorsAn infrared detector is a device that is used to detect and measure infrared radiation, which lies beyond the visible spectrum of light. These detectors are utilized in various applications,...CompaniesFOCtek Photonics Inc.FOCtek provides customers with all types of custom manufactured lenses, Precision Optical Components, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Crystals, Nonlinear Crystals,...Photonics Buyers' GuideOhara CorporationOHARA manufactures more than 130 environmentally safe optical glass types, free of both lead and arsenic. More than 300 tons of optical glass are melted per month, available in the following forms of...Photonics Buyers' GuideLaCroix Precision OpticsThe LaCroix name is synonymous with quality precision optics. Since 1947, three generations of family leadership have guided LaCroix Precision Optics to become the premier precision optics...Photonics Buyers' GuideOZ Optics LimitedEstablished in 1985, OZ Optics is a leading worldwide supplier of fiber optic components, test equipment and sensors. OZ Optics manufactures its products in three locations, Ottawa (Canada),...Photonics Buyers' Guide