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RT- A lead symbol "B" for backscatter radiation shall have a minimum dimensions of? Where shall it be attached during exposure?
1/2" height
1/16" thick
Shall be attached to the back of each film holder during exposure to determine backscatter radiation.
RT- what shall be used for judging film density?
Either a densitometer or step wedge comparison.
RT- image quality indicators IQI shall be of what type?
Hole type or wire type
RT- geometric unsharpness determination
Ug= Fd/D (find in Art 2, T-274)
RT- location markers, what are they to appear as and where shall they be placed?
Are to appear as radiographic images on film
Shall be placed on part, not on exposure holder / cassette
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