When treating a mediastinum with parallel opposed 10 x 15 cm AP/PA portals, which of the following structures is most likely at greatest risk for radiation induced injury?

Extra Credit: The leaf ends of the multileaf collimator produce divergent beam patterns to 

A course of radiation therapy which is intended to relieve the suffering of an individual with no intent to cure is called:                   

The discrepancies in the patient/beam alignment between the first portal image and the simulation DRR may be due to

Which of the following beam energies will exhibit the greatest amount of skin sparing? 

Which of the following is not a use for bolus?

A noticeable skin reaction due to radiation exposures around 30 Gy is 

The doctor orders an IV contrast simulation for his patient that is being simulated on a CT simulator for pancreatic cancer.  Before the contrast is to be administered, what should the radiation therapist injecting the patient do before starting the IV contrast?   Get an informed consent Check the patient’s insurance card Check to see if the patient had a BUN, creatinine, and GFR drawn Screen for diabetes Screen for kidney problems Screen for metal and pacemaker Check expiration date on contrast bottle    

The most commonly diagnosed pediatric cancer is

The suffix -poiesis means