题目内容

The source of electrons for the X-ray production is the ____.

A. anode
B. cathode
C. filament
D. focal spot
E. B & C
F. A & D

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What is the unit of current

A. kvp
B. Ohms
C. Volts
D. Amperage

An "ion" is a charged part of an atom that can have either a +/- charge.

A. True
B. False

The output of a fluoroscopic unit is 10 mR/min at 50 cm. The output at 75 cm is ____ mR/mm.

A. 15.0
B. 7.5
C. 6.6
D. 4.4

In order to double the quantity of a beam of X-ray, which one of the following approaches is NOT correct?

A. Double the exposure time.
B. Double the tube current.
C. Double the tube voltage.
D. Increase 15% of the tube voltage.

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