Question

Jack underwent radiation therapy using a beam of neutrons to treat a skin cancer on his hand. He received a dose equivalent of 16 mSvmSv  that was absorbed in 28 gg of tissue. The relative biological effectiveness (RBE) of these neutrons is 12.

a. What absorbed dose of radiation did Jack receive? Express your answer in grays

b. What was the total energy of the absorbed radiation? Express your answer in joules

c.

Suppose Jill, also being treated for skin cancer, received the same absorbed dose, but from an electron beam (beta particles) with an RBE of 1.3. What dose equivalent did she receive? Express your answer in sieverts

Answer 1

Given,

Dose equivalent,

Relative biological effectiveness, RBE = 12.

The dose is absorbed in m = 22 g of tissue.

(a). The Dose equivalent (H) is related to absorbed dose of radiation (D) as:

So,

(b). Total energy of the absorbed radiation,

(c) Given, RBE of Jill in case of an electron beam is 1.3.

Since,

Dose equivalent received by Jill,

Regards

answered by: anonymous