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What is the primary function of applicators in orthovoltage radiotherapy?

• To increase beam energy
  
  

• To reduce treatment time

• To generate secondary electrons
  
  

• To further collimate the beam and shape it to the treatment area

What is the dose percentage at the surface for superficial X-rays?

• 50%
  
  

• 75%

• 100%

• 25%

type of radiation is primarily emitted by Cobalt-60

• Gamma rays

• Beta particles

• Neutrons

• Alpha radiation

Identify the radiotherapy machine shown in the image:

• Tomotherapy

• LINAC

• Superficial

• Co60

What is the primary function of the filament in superficial radiotherapy?

• is responsible for converting high-speed electrons into X-rays

• the source of electrons by emitting them through thermionic emission when heated to a high

• collimates and shape beam on patient skin

• Provides mechanical support and shielding

modifies he narrow, non-uniform photon beam at the isocenter into a clinically useful beam

• Flatting filter

• scattering foil

• collimator

• ionization champers

It can move the patient Lateral (X) ,longitudinal (Y) ,vertical (Z)

• Treatment coach

• Gantry

• drive stand

• Imaging system

Provides direct current to the modulator,

• Klystron

• power supply

•  Accelerator tube

• bending magnet