Medical Physics - Board Exam Part 1 -

Medical Physics - Board Exam Part 1 - Radiation Therapy | 109 Questions and Answers with Complete Solutions 100% Correct | Latest Update

Question : PDD is dependent on the following factors

Correct answer: Increases with beam energy

Increases with field size Increases with SSD Decreases with Depth

Question : TAR is dependent on the following factors

Correct answer: Increases with beam energy

Increases with field size Decreases with depth Independent of SSD

Question : Skin dose is dependent on the following factors

Correct answer: Decreases with beam energy

Increases with SSD Increases with field size Increases with bolus Increases with oblique incidence

Question : The indicated field size on a medical LINAC

represents the field length and width in centimeters as defined

at the:

Correct answer: At isocenter (100 cm)

Question : On a conventional simulator, localizing lasers and

ODI checks should be performed when and within what tolerance

Correct answer: Daily, 2mm

Question : What is the tolerance for light/radiation field

coincidence?

Correct answer: 2mm

Question : Photon Dmax (cm) - Co60

Correct answer: 0.5

Question : Photon Dmax (cm) - 4MV

Correct answer: 1.0

Question : Photon Dmax (cm) - 6MV

Correct answer: 1.5

Question : Photon Dmax (cm) - 10MV

Correct answer: 2.7

Question : Photon Dmax (cm) - 15MV

Correct answer: 3.0

Question : Photon Dmax (cm) - 18MV

Correct answer: 3.2

Question : Photon Dmax (cm) - 20MV

Correct answer: 3.5

Question : Photon Dmax (cm) - 25MV

Correct answer: 4.0

Question : Electron Dmax (cm) - 6MeV

Correct answer: 1.5

Question : Electron Dmax (cm) - 9MeV

Correct answer: 2.2

Question : Electron Dmax (cm) - 10MeV

Correct answer: 2.5

Question : Electron Dmax (cm) - 12MeV

Correct answer: 2.8

Question : Electron Dmax (cm) - 15MeV

Correct answer: 2.9