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University

8 Qs

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نوف INARHAZLA

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

50%

75%

100%

25%

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

type of radiation is primarily emitted by Cobalt-60

Gamma rays

Beta particles

Neutrons

Alpha radiation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Identify the radiotherapy machine shown in the image:

Tomotherapy

LINAC

Superficial

Co60

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

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

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Flatting filter

scattering foil

collimator

ionization champers

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Treatment coach

Gantry

drive stand

Imaging system

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Provides direct current to the modulator,

Klystron

power supply

 Accelerator tube

bending magnet