The simulation therapist will use which of the following anatomical structures to alleviate pelvic rotation, which aids in treatment planning and reproducibility? 

Foaming agents, such as __________________________, have become widely used as an immobilization device.

Extra Credit: IGRT Module When patient tracking for motion and patient adjustments are performed during the treatment, it is called

Extra Credit: IGRT Module Which of the following can lead to random sources of patient set up errors that vary from fraction to fraction?  1. Organ stability 2. Anatomic changes 3. Image-guidance errors

The oncologist asks for a field shift of 1.0 cm posteriorly, what direction will the table be moved and assume patient is in a supine position?

Which of the following is the weakest link in treatment planning?

The planned target volume will contain margins for geometric uncertainties, such as:

The light field on the linear accelerator is intended to represent

Source axis distance is measured from the _______________ to a/the ________________ around which the gantry rotates 360 degrees. 

When looking at a single sagittal computed tomography image slice, what direction and/or directions are being observed?