The following factors affect image sharpness except______.
A. geometric size of focal spot
B. movement unsharpness
C. projection distortion
D. elecronic nosie
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The X-ray intensity is lower on the anode side of the tube due to______.
A. line focus principle
B. heel effect
C. filament temperature
D. anode inclination
The geometric sharpness of an image is affected by____.
A. focal spot. A large focal spot is easy to obtain good radiographic definition
B. source object distance (SOD). A large SOD is easy to blur image.
C. object film distance (OFD). A large OFD is easy to make image blur.
D. none of the above.
About the “Line Focus Principle”, which of the following statement is correct?
A. The effective/nominal focal area is smaller than actual focal area.
B. The effective/nominal focal area determines the tube rating.
C. The effective/nominal focal area is independent on the anode angle.
D. The effective/nominal focus is modelled as a round shape.
Which of the following two factors affect both quantity and quality of X-ray radiation?
A. mAs, kVp.
B. kVp, exposure distance to subject.
C. Exposure distance to subject, filtration.
D. kVp, filtration.
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