Principles of Exposure and Image Quality Flashcards
Prime Factors of Radiographic Exposure
mA,kVp,SID,and Exposure Time
What affects X-Ray Quantity:
mAs,kVp,SID,and Filtration
What both affect Quantity and Quality:
Kilovoltage and FIltration
What affects the rate of exposure of exposure and is the number of photons produced per second during an exposure:
Milliamperage
The quantity of exposure is also :
Directly proportional to the exposure time
The Unit used to indicate the total quantity of X-Rays in an exposure is:
Milliampere-seconds,abbreviated mAs
The Quantity of exposure and the patient dose are:
Directly proportional to the mAs
Is the Primary controller of radiographic density:
Millampere-Seconds;mAs
Controls both the quality and the Quantity of the X-Ray beam:
Kilovoltage
Is the primary controller of the penetration of X-Rays:
Kilovoltage (kVp
)
Also has an affect on the Quantity of exposure to the IR:
Kilovoltage (kVp)
Is directly affected by kVp:
The Contrast
High kVp produces:
Low contrast images
Low kVp produces:
High contrast images
kVp is the primary controller of:
Radiographic Contrast
Affects the intensity of the X-Ray beam and the Quantity of X-Rays:
Source to Image Distance;SID
How is the intensity of the beam expressed:
Inverse Square Law
The Intensity is _______ to the square of the distance:
Inversely Proportional
The four primary factors that directly affect how the X-Ray image looks:
Density,Contrast,Distortion and Spatial Resolution
Density and Contrast are considered:
Photographic properties
Distortion and Recorded Detail are considered:
Geometric Properties
An image too dark is:
Over exposed
An image that is too late is:
Under exposed
is primary controlled by varying the mAs:
Density
