The portion of a dental image that appears dark or black is termed:
radiolucent
the portion of a dental image that appears light or white is termed:
radiopaque
which appears more radiolucent on a dental image?
air space
which appears more radiopaque on a dental image?
enamel
the overall blackness or darkness of a dental image is termed:
density
increasing the milliamperage (mA) will cause
increase in density, darker image
increasing the operating kilovoltage (kV) will cause:
increase in density, darker image
increasing the exposure time will cause:
increase in density, darker image
a dental patient has thick soft tissues and dense bones. to compensate for this increase in subject thickness and to provide an image of diagnostic density, the density, the dental radiographer may:
increase the exposure time or increase the milliamperage or increase the kilovoltage
the difference in the degrees of densities between adjacent areas on a dental image is termed:
contrast
a dental image that demonstrates many shades of gray is said to have high or low contrast?
low contrast
a dental image that demonstrates very dark areas and very light areas is said to have high or low contrast?
high contrast
the exposure factor that has a direct influence on the contrast of a dental image is:
kilovoltage
the type of contrast preferred in dental imaging is:
low contrast
the stepwedge is used to:
demonstrate short & long scale contrast, monitor quality control of film processing, demonstrate densities
the capability of the receptor to reproduce distinct outlines of an object is termed:
distortion
the unsharp or blurred edges seen on an image are termed:
penumbra
the geometric characteristic that refers to an image that appears larger than its actual size is termed:
magnification
a variation in the true size and shape of the object being imaged is termed:
distortion
decrease focal spot size=_______ sharpness
Increase
increase crystal size= _____ sharpness
decrease
decrease crystal size= _____ sharpness
increase
decrease movement= _____ sharpness
increase
increase movement= ______ sharpness
decrease
increase target-receptor distance = _____ magnification
decrease
increase object-receptor distance = ____ magnification
increase
decrease object-receptor distance = ____ magnification
decrease
object and receptor are parallel = ____ distortion
decrease
beam perpendicular to object and receptor = ____ distortion
decrease
beam not perpendicular to object and receptor = ____ distortion
increase