When calculating extended distances how do you correct the %DD?

Ratio of the dose at a given point in the phantom to the dose in free space at the same point is:

What is a method of dose correction with inhomogeneities?

When using an extended distance, what corrections need to be made?

What is the therapeutic ratio if the normal tissue tolerance is 5000 cGy and the lethal dose for the tumor is 4000 cGy.

Which of the following is a graphic plot of the target and normal structure volumes vs a function of dose?

If the SSD is increased, the %DD will:

Write a five-paragraph argumentative essay on one of the following topics:   1. Should the use of marijuana be legalized? 2. Should phones be banned in the classroom?  

Castel and Joe are planning trips to three countries this year. There are 7 countries they would like to visit. One trip will be one week long, another two days, and the other two weeks. Find the number of possible trips.

Examine the graph below. Then choose the correct responses from the drop down menus. The point located at (-5,-1) is Point B is located in quadrant