A diagnostic x-ray tube is running at 120 kVp and 10 mAs.  The settings are changed to 120 kVp and 5 mAs.  What is the approximate change in tube output?

You are reviewing a chart and the therapist asks you what does SIMT stand for? Your response is?  

Electrons lose energy when passing through matter by: Production of Bremsstrahlung. Photoelectric interactions. Collisions with other electrons. Production of delta rays.

In the event of a treatment beam was terminated due to machine malfunction, where would you be able to find the monitor units delivered to the patient?

What is the dose per day if your patient has 3 vmat arcs with 250mu, 200mu, and 300mu for a total of 6000cGy in 30 treatments?

The picture below is seen in most clinical settings and every hospitals. A patient asks you “What is that thing?” What do you tell them it is? 

Based on the image, how many treatment fields are you treating for this patient?

If you are with a patient that is experiencing a seizure, what action is NOT appropriate?

A Stage 1 squamous cell carcinoma of the true vocal cord says he has done some research and wants you to explain his treatment plan. You print this picture off to help illustrate the plan to him.You explain that you are treating 2 lateral fields. You realize the Enhanced Dynamic wedges (EDW) were not included on the picture.  Respond with one of the following underlined choices : You would expect the Collimator to be at?   0 degrees, 90 degrees, Doesn’t matter Which jaw would move to create the enhanced dynamic wedge? X, Y, Doesn’t matter  The jaw should start from the aspect of the patient’s anatomy and close/move in what direction to end at this location based on the patient’s anatomy to create the planned wedge. Superior, Inferior, Anterior, Posterior, Right, Left  

After CT simulation, what should be documented by the radiation therapist?