QUESTION 69 How much more likely is a photoelectric interaction with bone (ZEff 13) than with...

Question

Question

Answer 1

Answer #1

The probability of photoelectric absorption is directly proportional to

Px ZE

Z is the atomic number and E is the energy of photon.

Assuming same energy of photon is incident on both the bone and soft tissue ratio of the probability of photoelectric absorption is

Zefftur

So, it is 5.6 times more likely there is a photoelectric interaction with the bone.

Answer 2

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