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

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?

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

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?

You set up your head and neck patient, who is indexed, for the first day of treatment on the linear accelerator. The table parameters are the following: Vertical: 119.7 Longitudinal: 123.3 Lateral: 107.9 The oncologist wants to make some adjustments to the isocenter location. She wants the isocenter to be shifted: left 1.7  cm, posterior 2.3 cm, and superior 3.7 cm.  What are new table coordinates?

As a radiation therapist, you must assess the patient’s needs, recognize cultural differences, and respond to nonverbal communication before and during the simulation process. Which of the following would be considered an example(s) of assessment?