A wedge may:

A left sided breast cancer is being treated with tangential fields with a hinge angle of 180 degrees. If the gantry angle for the medial tangent is 310 degrees, what is the gantry angle for the lateral tangent?

A patient is treated on the 6-MV linear accelerator at 122 cm SSD. The collimator setting is 18 x 18 cm and the field size on the patient’s skin is 23 x 23 cm. The prescription calls for a dose of 150 cGy to be administered to a depth of 10 cm with a single anterior field. Calculate the MU setting with the use of PDD.

A device measuring 5 cm in diameter is placed on the patient’s anterior surface where the SSD is 100 cm. If the simulation film is located at 135 cm from the target, what is the diameter of the device on the film?

What is the practical range of a 9 MeV electron beam?

A source has a half-life of 74 days. If the initial activity is 25 mCi, what is the activity after 30 days?

A patient’s prescribed total dose is 3000 cGy. The patient was to receive 300 cGy for 10 fractions at 90 cm SSD. What is the total dose the patient would receive if they were accidentally treated at 100 cm SSD?

You have just entered the flight deck of a Bombardier CRJ-X and see that the APU is deferred (inoperative). Which one of the following pneumatic sources must be used to start the first engine?

If performing an in-flight relight attempt of a turbofan engine, ______________  and ______________ are important factors to consider.

If needed, how do you drop the course?