Radiography Exam Radiographic Equipment and Maintenance

Question 1

Which component of the x-ray tube is responsible for producing electrons through thermionic emission?

Accepted Answer

Filament (cathode)

Answer

Anode target

Answer

Focusing cup

Answer

Glass envelope

Question 2

The primary purpose of the rotating anode in an x-ray tube is to:

Accepted Answer

Distribute heat over a larger target area to prevent damage

Answer

Increase the number of x-rays produced

Answer

Reduce the size of the focal spot

Answer

Improve the efficiency of x-ray production

Question 3

The line-focus principle in x-ray tube design allows for:

Accepted Answer

A large actual focal spot that produces a small effective focal spot for improved image sharpness

Answer

A small actual focal spot that creates a larger effective focal spot

Answer

Equal actual and effective focal spot sizes

Answer

Maximum heat dissipation without affecting image quality

Question 4

Which of the following is a quality control test that evaluates the accuracy of the x-ray beam's alignment with the light field?

Accepted Answer

Beam-light field congruence test

Answer

Half-value layer measurement

Answer

Focal spot size measurement

Answer

Automatic exposure control (AEC) calibration

Question 5

The heel effect in radiography refers to:

Accepted Answer

Reduced x-ray intensity on the anode side of the beam compared to the cathode side

Answer

Increased x-ray intensity at the center of the beam

Answer

Loss of image sharpness at the edges of the field

Answer

Differential absorption of the beam by varying tissue thicknesses

Question 6

During a quality control assessment, kVp accuracy is typically evaluated using a:

Accepted Answer

Digital kVp meter (non-invasive kVp meter)

Answer

Densitometer

Answer

Sensitometer

Answer

Penetrometer