X-ray production MCQs

What is the primary source of X-rays in an X-ray tube?
- A) Filament
- B) Tungsten target
- C) Cathode
- D) Anode
What type of radiation is generated when high-energy electrons collide with the target material in an X-ray tube?
- A) Alpha radiation
- B) Beta radiation
- C) X-ray radiation
- D) Gamma radiation
What component of the X-ray tube is responsible for emitting electrons?
- A) Anode
- B) Cathode
- C) Filament
- D) Grid
Which physical process primarily produces the majority of X-rays in a conventional X-ray tube?
- A) Characteristic radiation
- B) Bremsstrahlung radiation
- C) Compton scattering
- D) Photoelectric effect
What is the role of the glass envelope in an X-ray tube?
- A) To provide mechanical support
- B) To maintain a vacuum
- C) To shield against radiation
- D) To focus the X-ray beam
What determines the energy of the produced X-rays?
- A) The distance from the target
- B) The applied voltage (kV)
- C) The size of the filament
- D) The type of patient
What happens when electrons hit the anode in an X-ray tube?
- A) They lose energy completely
- B) They convert kinetic energy into X-ray photons
- C) They bounce back to the cathode
- D) They heat the anode without producing X-rays
Which of the following factors influences the quantity of X-rays produced?
- A) Milliamperage (mA)
- B) Anode material
- C) Distance to the patient
- D) All of the above
What is the typical range of kilovoltage (kV) used in X-ray production?
- A) 20-30 kV
- B) 50-70 kV
- C) 60-150 kV
- D) 200-300 kV
In X-ray production, what does the term “filtration” refer to?
- A) Removing low-energy photons from the beam
- B) Using materials to absorb unwanted radiation
- C) Focusing the X-ray beam
- D) Increasing the exposure time
What is the purpose of using a rotating anode in X-ray tubes?
- A) To increase the electron emission
- B) To distribute heat evenly
- C) To enhance image quality
- D) To reduce radiation exposure
What happens to the X-ray beam as it travels through matter?
- A) It increases in intensity
- B) It is attenuated
- C) It changes direction
- D) It amplifies
What is the main function of the collimator in X-ray production?
- A) To increase radiation dose
- B) To limit the size of the X-ray beam
- C) To produce contrast in images
- D) To adjust the tube voltage
What does the term “characteristic radiation” refer to?
- A) Radiation emitted from the patient
- B) Radiation produced by electron transitions in atoms
- C) Radiation generated by ionization
- D) Low-energy background radiation
What is the result of increasing the milliampere-seconds (mAs) setting during X-ray production?
- A) Increased X-ray quantity
- B) Decreased image density
- C) Reduced radiation dose
- D) More scattered radiation
Which type of target material is most commonly used in X-ray tubes?
- A) Copper
- B) Silver
- C) Tungsten
- D) Lead
How does the angle of the anode affect X-ray production?
- A) It has no effect
- B) It influences the effective focal spot size
- C) It increases radiation exposure
- D) It decreases image quality
What is the primary purpose of the X-ray tube housing?
- A) To enhance image contrast
- B) To protect against radiation leakage
- C) To cool the anode
- D) To support the cathode
What phenomenon occurs when X-ray photons interact with matter?
- A) Total absorption only
- B) Scattering and absorption
- C) Reflection only
- D) None of the above
In the context of X-ray production, what does “dose” refer to?
- A) The amount of radiation absorbed by a patient
- B) The number of X-rays produced
- C) The exposure time
- D) The energy of the X-ray beam
Which parameter is adjusted to control the contrast of an X-ray image?
- A) Kilovoltage (kV)
- B) Milliampere-seconds (mAs)
- C) Exposure time
- D) Distance from the source
What is the impact of increasing the kV setting in X-ray production?
- A) Decreased penetration
- B) Increased penetration and lower contrast
- C) Higher patient exposure
- D) Decreased radiation quality
Which of the following contributes to the production of heat in an X-ray tube?
- A) Resistance of the anode
- B) Absorption of X-ray photons
- C) Collimation
- D) Filtration
What is a common artifact that can appear on an X-ray image?
- A) Motion blur
- B) Radiopacity
- C) Focal spot
- D) Scatter radiation
How does the use of a grid improve X-ray image quality?
- A) By increasing radiation dose
- B) By reducing scatter radiation
- C) By focusing the beam
- D) By increasing exposure time
What is the typical distance from the X-ray tube to the patient during a standard examination?
- A) 30 cm
- B) 50 cm
- C) 100 cm
- D) 150 cm
What effect does scatter radiation have on X-ray images?
- A) It decreases image contrast
- B) It increases detail
- C) It enhances resolution
- D) It improves sharpness
What safety feature is often built into modern X-ray machines to prevent accidental exposure?
- A) Automatic shut-off
- B) Manual settings only
- C) No safety features
- D) High kV settings
What type of imaging modality often uses X-rays as its primary source of radiation?
- A) MRI
- B) Computed Tomography (CT)
- C) Ultrasound
- D) Nuclear medicine
What is the significance of the half-value layer (HVL) in X-ray production?
- A) It measures exposure time
- B) It indicates the thickness of material required to reduce X-ray intensity by half
- C) It measures radiation dose
- D) It describes the energy of X-rays produced

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