Flashcards
Radiology
Cards in this deck (31)
- 1A device that can be used to demonstrate short scale and long scale contrastStepwedge
- 2Refers to the portion of a processed radiograph that is dark or blackRadiolucent
- 3Under the control of the film manufacturer and cannot be changed by the dental radiographerInherent qualities
- 4Size of the focal spot ranges from _____0.6-1.0mm2
- 5Determines the energy and penetrating power of radiationWavelength
- 6Many shade of gray instead of black and whiteLow contrast
- 7Defines the product of the quantity (number of x-ray photons) and quality (energy of each photon) per unit of exposureX-ray beam intensity
- 8Reducing the intensity of the xray beam by halfHalf value layer
- 9When kilovoltage peak is increased by 15, exposure time should be __increased__by half (T or F)F - decreased
- 10Refers to the interval of time during which x-rays are producedExposure time
- 11The maximum or peak voltageKilovoltage peak (kVp)
- 12Means that as one variable increases, the other decreasesInversely proportional
- 13How much ampere is required in dental radiography?7-15mA
- 14Many black and white areas and few shades of grayHigh contrast
- 15Refers to the number of x-rays produced in the dental x-ray unitX-ray beam quatity
- 16Determines the energy and penetrating power of radiationWavelength
- 17Used to explain how disrance affects the intensity of the xray beamInverse square law
- 18Refers to how sharply dark and light areas are differentiated or separated on a filmContrast
- 19Is the unit of measurement used to describe the potential that drives an electrical current through a circuitVolt
- 20Determines the amount of electrons pasaing through the cathode filamentAmperage
- 21Wavelength that has more penetrating powerShorter wavelength
- 22When kilovoltage is __increased__ by _13_, exposure time should be doubled (T or F)Decreased, 15
- 23The quality or wavelength is controlled by ___Kilovoltage
- 24A measurement force that refers to the potential difference between two electrical chargesVoltage
- 25Refers to that portion of a processed radiograph that appears light or whiteRadiopaque
- 26The range of uselful densities seen on a dental radiographSclae of contrast
- 27A variation in the true size and shape of the object being radiographedDistortion
- 28The tungsten target of the anode serves as a focal spotFocal spot size
- 29The fuzzy, unclear area that surrounds a radiographic imagePenumbra
- 30"Umbra"Shadow
- 31Refers to the cabality of the x-ray film to reproduce the distinct outlines of an objectSharpness
Information
- Description
- Radiation characteristics and dental xray image
- Created by
- Lyle Ignacio
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