Review Questions for Sunday April 18, 2010

Radiotherapy examination content specifications can be found on the ARRT site.

Topic: Interactions

1. You are give the activity of a radioactive source; which is, 800 mCi (millicuries) and the half life of the source; that is, 6 hours. What will the activity of the source be in 12 hours?

A. 800 millicuries
B. 600 millicuries
C. 300 millicuries
D. 200 millicuries

Topic: Delivery

2. The half life of Iodine 125; I125 is approximately ________ ?

A. 120 days
B. 90 days
C. 60 days
D. 50 days

Topic: Physics

3. The frequency of a wave is measured in hertz (Hz). The frequency can be defined as: ?

A. The height of a given wave
B. The distance a given wave travels
C. The number of waves cycles per second
D. The speed of a photon

Check your answers here