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A therapist is doing daily QA on a machine that is schedule to treat multiple stereotactic body radiotherapy treatments.  One of the lasers is not perfectly aligned to the phantom as expected, so they use a ruler to measure how far off the laser is from the line.  The difference measured is 1.3 cm.  Answer the following questions:   1) Is the laser localization within tolerance? 2) How should you proceed?

Which jaw has the error on it? Click the corresponding letter.

Identify the left vertical laser by clicking on the corresponding letter.

Which of the following types of treatment are correlated to a 1mm laser localization tolerance during monthly QA? Choose all that apply.

A flattening filter is intended to make the beam as flat as possible at 10 cm depth inside a phantom.

1.  Data Booklet-2025-6.pdf   2. D1- HL- Nov 2024-1.pdf

In the absorptive state, most glucose that enters the liver is converted to  

Which of the following is the main factor that determines water loss?  

Which of the following is a waste product normally excreted by the kidneys?  

Which of the following is a potential cause of hypothermia?