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the making of radiographs by exposing an image receptor, either film or digital sensor What is radiography? to provide the oral health care team with radiographic images of the best possible diagnostic quality What is the purpose of dental radiography? to obtain the highest quality radiographs while maintaining the lowest possible radiation exposure risk for the patient What is the goal of dental radiography? the study of x-rays and techniques used to produce radiographic images What is oral radiology discovered the x-ray What did Wilhelm Conrad Roentgen do? the invisible ray named in honor of Roentgen's findings What is the Roentgen Ray? the image produced on photosensitive film What is a Roentgenograph? an image produced on photosensitive film by exposure to x-rays What is a radiograph? electric hazard What was a problem with early x-ray machines? introduced by Coolidge and General Electric in 1919 When and who made the shockproof dental x-ray machine? replaced pointed cone open cylinders directs the x-rays Position Indicating Devide (PID) exposes entire dentition and surrounding structures on a single image panoramic radiography medical x-rays; gives off 600 times more than a panoramic radiograph tomography scan & computed tomography scan (CT) contains lower doses of radiation Cone Beam Volumetric Imaging (CBVI) and Cone Beam Computed Tomography contained glass photographic plates wrapped in black paper and rubber early dental x-ray film packets available in 1919 from Kodak machine-wrapped dental x-ray film packet long exposure time one sided emulsion coating replace film as the image receptor with a sensor digital imaging systems introduced digital radiography in 1987, called RadioVisioGraphy Frances Mouyen elimination in film and processing chemistry, ruduction in radiation dosage, elimination of film package disposal digital image sensor advantages bisecting and paralleling basic techniques for acquiring images first and earliest technique What is the bisecting technique? preferred method; second and newer technique What is the paralleling technique? assist radiography in moving toward representations of real-life conditions 2D and 3D imaging systems will benefit the quality of oral health care computed approach the radiation absorbed in a specified area of the body measured in grays (Gy) or rads What is dosage?