Module 4 Flashcards
Radio graphic blur is caused by
Patient motion and geometric factors
Which of the following would lead to decreased density on an analog image
A low developer temp
Excessive radiation is defined as using more than blank times the level of radiation needed to produce a diagnostic quality image
3
What error is caused by the computers inability to identify the edges of collimating
Exposure field recognition error
Improper alignment of a radio graphic grid during digital imaging can lead to improper?
Contrast
Scatter is difficult to interpret during histogram analysis when it occurs
Outside collimated field
Inappropriate brightness on a digital image can be caused by
Poor collimating, incorrect menu selection, poor positioning.
When exposure absorbed by the ir surpasses the level at which the image receptor can respond, what occurs
Saturation
Most common cause of image blur on digital?
The patient
Shape distortion can be caused by?
Angular relationship of tube, part and ir.
Primary cause of quantum noise
Insufficient signal strength
DAP is a measurement of
Exposure
A lead apron in the exposure field may cause an exposure indicator miscalculation bc image data can be misrecognized as
Gross under exposure
Current recommendation to reduce errors from collimating
Record one image per image receptor
Most digital artifacts appear
White
Most artifacts that appear when using cassette based digital imaging are caused by
Dust and dirt
Most artifacts that appear when using cassette less systems are caused by
DELs
Digital artifacts that are caused by processing
Appear along the entire axis of the image and on every imaging plate
Artifacts caused by a dirty light guide appear
White and linear
An artifact that presents as a wavy appearance in a localized are of an image is due to
Laser disruption and plate disruption
