题目内容

There are four types of radiation-matter interactions that can contribute to the total attenuation. These are ______.

A. Compton scattering, pair production, photoelectric absorption, rayleigh scattering
B. Compton scattering, electron exchange, photoelectric absorption, rayleigh scattering
C. Electron exchange, pair production, photoelectric absorption, rayleigh scattering
D. None of the above

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After traveling through two half-value layers, the incident radiation has been reduced to _____.

A. 50%
B. 35%
C. 20%
D. None of the above

For maximum penetration of X-rays, which of the following combinations would you select?

A. 90 kvp and 10 ma
B. 65 kvp and 10 ma
C. 70 kvp and 90 ma
D. 10 kvp and 65 ma

X-rays are most effectively stopped by ______.

A. Copper
B. Glass
C. Lead
D. Tungsten

When the energy from an x-ray tube has penetrated through 3 half-value layers, only 3/4 of the original energy remains.

A. True
B. False