Question

A 75 kV x-ray machine gives an exposure of 200 mR for a 0.2-sec chest x-ray exam.

What is the x-ray fluence during this chest x-ray exam?
What is the energy fluence?
What is the dose-equivalent delivered to the bone, muscle, and fat?

Answer 1

Step-by-step explanation:

Given that,

Potential = 75 kV

Exposure = 200 mR

Time = 0.2 sec

We need to calculate the x-ray fluence during this chest x-ray exam

Using formula of fluence

`x-ray\ fluence=exposure* time`

Put the value into the formula

`x-ray\ fluence=200*0.2`

`x-ray\ fluence=40\ mRs`

We need to calculate the energy fluence

Using formula of energy fluence

`E_(f)=40*10^(-3)*75*10^(3)`

`E_(f) = 3000\ J`

We need to calculate dose -equivalent delivered to the bone, muscle, and fat

Using formula of dose

`D=(E)/(t)`

Where, D = dose

E = energy

t = time

Put the value into the formula

`D=(3000)/(0.2)`

`D=15.0\ kJ`

Hence, This is the required solution.