TP4 Exam 2 Study Guide Questions with Complete Solutions (Latest 2025) With Gamma Knife, the maximum size lesion that should be
treated is:
- 4cm
- 10cm
- 1cm
- 12cm - Correct Answers ✅a. 4cm
The accuracy of Gamma Knife is less than:
- 0.1mm
- 0.3mm
- 2mm
- 1mm - Correct Answers ✅d. 1mm
True or False: The Gamma Knife unit is fully self-shielded
during treatment and does not require a shielded room - Correct Answers ✅False
True or False: The walls for rooms for Cyberknife are all
considered to be scatter barriers - Correct Answers ✅False
True or False: Cyberknife treatments offer a 360 degree
rotational treatment with the use of the robotic linac - Correct Answers ✅False 1 / 2
TP4 Exam 2 Study Guide Questions with Complete Solutions (Latest 2025)
Proton RBE is close to:
- 4.0
- 3.0
- 1.0
- 2.0 - Correct Answers ✅c. 1.0
Maximum dose for protons is found at:
- surface
- bragg peak
- 10cm
- 2.0cm - Correct Answers ✅b. bragg peak
The surface dose for protons is about:
- 25%
- 100%
- not important
- 50% - Correct Answers ✅a. 25%
True or False: CT numbers must be converted to electron
density for Proton planning - Correct Answers ✅False
True or False: Beam hardening artifacts create uncertainties
in proton planning - Correct Answers ✅True
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