Chapter 16 Review Questions Flashcards
What is the name of the peak of maximum dose for particle therapy?
a. Rutherford peak
b. Lawrence peak
c. Proton peak
d. Bragg peak
d. Bragg peak
What device is used to spread out the maximum dose?
a. Synchrotron
b. Range modulator wheel
c. Cyclotron
d. Energy absorber
b. Range modulator wheel
What is created at the end of the beam for Cyclotrons, which is more than Synchrotrons?
a. Neutrons
b. Alpha particles
c. Beta particles
d. Electrons
a. Neutrons
Why is the compensator “smeared?”
a. To make the design more smooth
b. To make the compensator easier for QA
c. To modify the design so that it can take into account internal motion and setup error
d. To reduce the impact of the compensator on the dose distribution
c. To modify the design so that it can take into account internal motion and setup error
What is the most common device used for collimating the dose for passive scattered particle therapy?
a. Cerrobend
b. Brass
c. Tin
d. Aluminum
b. Brass
What is the RBE for proton therapy?
a. 1.1
b. 5
c. 1.6
d. 0.5 (relative biological effectiveness)
a. 1.1
What margins are added to the target to take into account the range uncertainty of particle therapy beams?
a. Anterior and posterior margins
b. Uniform margins
c. Superior and inferior margins
d. Proximal and distal margins
d. Proximal and distal margins
What analysis can be generated to test the treatment plan with range uncertainties and setup errors applied?
a. Security analysis
b. Robust analysis
c. Simulated analysis
d. Delivery analysis
b. Robust analysis
What is the term to describe the PSPT approach to treat complex tumor shapes by matching two fields together based on their penumbra?
a. Squaring
b. Circling
c. Ranging
d. Patch planning
d. Patch planning
Are all particle therapy beams treated with a rotational gantry?
a. Yes
b. No
b. No
