Choose the Most Correct Statement Concerning Co-60 Teletherapy $\gamma$ -Rays Whose Average Energy Is 1

question 7

Multiple Choice

Choose the most correct statement concerning Co-60 teletherapy.

• A) A timer error factor must be added to the treatment time.
• B) The head contains the source,shielding,and collimators.
• C) The Co-60 source is 1 to 3 cm in diameter.
• D) Co-60 emits two \(\gamma\)-rays whose average energy is 1.25 MeV.
• E) All of the above are true.

---

Definitions:

Fair Value

The price that would be received for selling an asset or paid for transferring a liability in an orderly transaction between market participants at the measurement date.

Straight Line Amortization

A method of allocating the cost of an intangible asset evenly over its useful life.

Unrealized Profits

are profits that have been earned but not yet realized through a transaction, such as an increase in value of unsold stocks.

After-Tax Dollar Value

The amount of money left after federal, state, and other governmental taxes have been deducted.