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Stack #56572

CH 3 Wallace Size Distortion

QuestionAnswer
The distace between the x-ray tube and film SID
another name for SID focus film distance
the distance between the object and film OID
OID is also known as OFD
The distance between the x-ray tube and object SOD
formulas for calculating distances are SID=OID+SOD OID=SID-SOD SOD=SID-OID
what is size distortion the misrepresentation of the true size of the image as compared to the object
for least magnification you woulds use a ________ OID, and a _______ SID short, long
to avoid magnification where would you place the object of interest close to the film
A long SID produces the _________magnification least
What is the formula for magnification SID/SOD or Image/Object
Formula for percent of magnification is Image minus object divided by object times 100
four radiographic qualities denisty, contrast, recorded detail, and distortion
What affects recorded detail SID and OID
SID increases recorded detail increases
OID increases recorded detail decreases
SID affects density
OID affects density and contrast
Created by: amynae
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