Question

How much of the generated energy actually utilized for taking an X-Ray?

(a) 0.1%

(b) 1%

(c) 10%

(d) 100%

I got this question during an interview.

The above asked question is from X-Ray topic in chapter Diagnostic Investigation via Imaging Techniques of Clinical Science

Answer 1

Right answer is (b) 1%

To explain I would say: The X -Rays that are generated have a tendency to scatter. Thus, they are collimated. Also, the emitted X – Rays also strike against the metallic plate/radioactive material to produce more X – Rays. Also, energy is lost in the form of heat and light. Thus, effectively only 1% of the energy is used to produce X-Ray images.