Dental Radiology Termonology
Anode-The positive terminal of an x-ray tube; a tungsten block embedded in a copper stem and set at an angle to the cathode (q.v). The anode emits x rays from the point of impact of the electron stream from the cathode. A rotating anode is one that rotates constantly during x-ray production to present a changing focal spot to the currents without overheating.
Bitewing (Radiograph) - the x-ray shadow images of the crowns, necks, and coronal third of the roots of both the upper and lower teeth, so called because the patient bites on a cardboard tab, or wing, place in the center of the film packet. A special type of intraoral radiograph for depicting interproximal features of the teeth and interdental bone crests. Made on a film positioned by special tabs on which the patient’s teeth are closed.
Cathode- a negative electrode form which electrons are emitted. In x-ray tubes, the cathode usually consist of a helical tungsten filament behind which molybdenum reflector cup is located to focus the electron emission toward the target of the anode.
Central Beam- The theatrical center of the x-ray beam. The term is used to designate the direction of the x rays in a given projection; the central ray may be considered to extend from the focal spot of the x-ray tube to the film.
Collimator- A lead disk with an aperture of various sizes and shapes the diaphragm limits the size of the primary beam to the area of interest, thereby minimizing patient exposure to the primary beam.
Developer Solution- A chemical (potassium bromide) used in a developer to check the development of the unexposed silver bromide and to control the working speed of the developer with respect to the exposed silver bromide. The developer also contains a reducing agent.
Electromagnetic Energy- The forms of energy propagated by wave motion as photons or discrete quanta. The forms of radiation have no matter associated with them, They differ widely in wavelength, frequency, and photon energy and have
Bitewing (Radiograph) - the x-ray shadow images of the crowns, necks, and coronal third of the roots of both the upper and lower teeth, so called because the patient bites on a cardboard tab, or wing, place in the center of the film packet. A special type of intraoral radiograph for depicting interproximal features of the teeth and interdental bone crests. Made on a film positioned by special tabs on which the patient’s teeth are closed.
Cathode- a negative electrode form which electrons are emitted. In x-ray tubes, the cathode usually consist of a helical tungsten filament behind which molybdenum reflector cup is located to focus the electron emission toward the target of the anode.
Central Beam- The theatrical center of the x-ray beam. The term is used to designate the direction of the x rays in a given projection; the central ray may be considered to extend from the focal spot of the x-ray tube to the film.
Collimator- A lead disk with an aperture of various sizes and shapes the diaphragm limits the size of the primary beam to the area of interest, thereby minimizing patient exposure to the primary beam.
Developer Solution- A chemical (potassium bromide) used in a developer to check the development of the unexposed silver bromide and to control the working speed of the developer with respect to the exposed silver bromide. The developer also contains a reducing agent.
Electromagnetic Energy- The forms of energy propagated by wave motion as photons or discrete quanta. The forms of radiation have no matter associated with them, They differ widely in wavelength, frequency, and photon energy and have