#1
Which of the following is a principle of X-ray generation?
Bremsstrahlung
ExplanationX-rays are emitted due to sudden deceleration of electrons.
#2
What is the function of the cathode in an X-ray tube?
To accelerate electrons towards the anode
ExplanationIt accelerates electrons towards the anode for X-ray generation.
#3
What is the primary purpose of an X-ray collimator?
To focus the X-ray beam
ExplanationIt restricts the size and shape of the X-ray beam to the desired area.
#4
Which of the following is NOT a factor affecting X-ray beam quality?
Patient size
ExplanationPatient size does not directly affect X-ray beam quality.
#5
What is the purpose of the filament in an X-ray tube?
To generate electrons
ExplanationIt heats up and emits electrons when voltage is applied.
#6
Which type of X-ray interaction with matter results in the complete absorption of the incident photon?
Photoelectric effect
ExplanationPhoton transfers all energy to an inner shell electron, causing ejection.
#7
Which of the following materials is commonly used for the target (anode) in X-ray tubes?
Tungsten
ExplanationTungsten is commonly used due to its high atomic number and melting point.
#8
What happens during the process of Bremsstrahlung in X-ray generation?
X-rays are emitted due to sudden deceleration of electrons
ExplanationX-rays are emitted when electrons are decelerated by the target material.
#9
In X-ray imaging, what does kVp stand for?
Kilovolt peak
ExplanationIt represents the peak voltage applied to the X-ray tube during exposure.
#10
What is the purpose of adding filtration to the X-ray beam?
To absorb low-energy photons
ExplanationIt removes low-energy photons, reducing patient dose and improving image quality.
#11
What does the term 'mA' represent in X-ray imaging?
Milliampere
ExplanationIt measures the rate of electron flow in the X-ray tube.
#12
How does increasing the source-to-image distance (SID) affect X-ray beam intensity?
Decreases intensity
ExplanationIntensity decreases due to beam spreading over a larger area.
#13
Which component of an X-ray tube is responsible for cooling the anode?
Rotor
ExplanationThe rotor dissipates heat generated at the anode during X-ray production.
#14
What effect does increasing the tube current have on X-ray production?
Increases X-ray intensity
ExplanationMore electrons flow, leading to increased X-ray production.
#15
What is the purpose of an X-ray grid in radiography?
To reduce scatter radiation
ExplanationIt absorbs scattered radiation, improving image contrast.
#16
Which of the following X-ray tube components is responsible for directing the X-ray beam toward the patient?
Collimator
ExplanationIt shapes and directs the X-ray beam towards the patient.
#17
Which of the following X-ray tube components is responsible for controlling the size and shape of the X-ray beam?
Collimator
ExplanationIt shapes and limits the X-ray beam's size and direction.