1. What is the primary component of an X-ray tube?
A) Cathode
B) Anode
C) Glass envelope
D) All of the above
Answer: D) All of the above
2. What is the function of the cathode in an X-ray tube?
A) To produce electrons
B) To convert X-rays to visible light
C) To focus X-rays onto the detector
D) To house the X-ray tube
Answer: A) To produce electrons
3. What type of radiation is produced when high-speed electrons hit the target anode in an X-ray tube?
A) Bremsstrahlung and characteristic radiation
B) Alpha radiation
C) Beta radiation
D) Gamma radiation
Answer: A) Bremsstrahlung and characteristic radiation
4. What is ‘Bremsstrahlung’ radiation?
A) Radiation produced when electrons are deflected by the nucleus of an atom
B) Radiation produced by the emission of alpha particles
C) Radiation resulting from the interaction of electrons with the target
D) Radiation emitted from radioactive decay
Answer: A) Radiation produced when electrons are deflected by the nucleus of an atom
5. What does the term ‘characteristic radiation’ refer to?
A) Radiation produced when electrons eject inner-shell electrons from atoms in the target
B) Radiation produced when electrons are slowed down
C) Radiation emitted by radioactive materials
D) Radiation emitted by the cathode
Answer: A) Radiation produced when electrons eject inner-shell electrons from atoms in the target
6. What is the role of the anode in an X-ray tube?
A) To provide a target for the high-speed electrons
B) To generate high-speed electrons
C) To filter out low-energy X-rays
D) To focus the X-ray beam
Answer: A) To provide a target for the high-speed electrons
7. What material is commonly used for the anode target in X-ray tubes?
A) Tungsten
B) Lead
C) Aluminum
D) Copper
Answer: A) Tungsten
8. What determines the quality of X-rays produced in an X-ray tube?
A) The tube voltage (kV)
B) The tube current (mA)
C) The exposure time
D) All of the above
Answer: D) All of the above
9. What is the purpose of using a rotating anode in an X-ray tube?
A) To dissipate heat more efficiently
B) To increase the X-ray tube’s power
C) To focus the X-ray beam
D) To filter out low-energy X-rays
Answer: A) To dissipate heat more efficiently
10. How does increasing the tube voltage affect X-ray production?
A) It increases the energy and penetrating power of the X-rays
B) It decreases the energy of the X-rays
C) It decreases the quantity of X-rays produced
D) It increases the number of low-energy X-rays
Answer: A) It increases the energy and penetrating power of the X-rays
11. What is the effect of increasing the tube current (mA) on X-ray production?
A) It increases the number of X-rays produced
B) It increases the energy of the X-rays
C) It decreases the number of X-rays produced
D) It decreases the energy of the X-rays
Answer: A) It increases the number of X-rays produced
12. What does the ‘X-ray tube housing’ do?
A) It protects the operator and patient from radiation
B) It controls the X-ray beam intensity
C) It regulates the tube current
D) It focuses the X-ray beam
Answer: A) It protects the operator and patient from radiation
13. What is the purpose of a collimator in X-ray imaging?
A) To limit the size and shape of the X-ray beam
B) To increase the energy of the X-ray beam
C) To produce characteristic radiation
D) To cool the X-ray tube
Answer: A) To limit the size and shape of the X-ray beam
14. What is the typical range of X-ray tube voltage (kV) used in diagnostic radiology?
A) 50 to 150 kV
B) 10 to 30 kV
C) 200 to 300 kV
D) 5 to 20 kV
Answer: A) 50 to 150 kV
15. What is the purpose of the X-ray tube’s glass envelope?
A) To maintain a vacuum and protect the components
B) To focus the X-ray beam
C) To filter out low-energy X-rays
D) To dissipate heat
Answer: A) To maintain a vacuum and protect the components
16. How does the X-ray tube’s focal spot size affect image resolution?
A) Smaller focal spots produce higher resolution images
B) Larger focal spots produce higher resolution images
C) Focal spot size has no effect on image resolution
D) Smaller focal spots decrease image resolution
Answer: A) Smaller focal spots produce higher resolution images
17. What is the function of the X-ray tube’s filament?
A) To produce electrons for X-ray generation
B) To focus the X-ray beam
C) To filter out low-energy X-rays
D) To dissipate heat
Answer: A) To produce electrons for X-ray generation
18. What is the role of the X-ray tube’s focusing cup?
A) To focus the electrons onto the anode target
B) To dissipate heat from the anode
C) To filter low-energy X-rays
D) To produce high-speed electrons
Answer: A) To focus the electrons onto the anode target
19. What is ‘tube current’ (mA) in an X-ray tube?
A) The flow of electrons from the cathode to the anode
B) The voltage applied to the X-ray tube
C) The time duration of X-ray exposure
D) The quality of the X-ray beam
Answer: A) The flow of electrons from the cathode to the anode
20. What is the effect of the X-ray tube’s exposure time on image quality?
A) Longer exposure time increases the number of X-rays and the image density
B) Shorter exposure time increases image density
C) Exposure time has no effect on image quality
D) Longer exposure time decreases the number of X-rays produced
Answer: A) Longer exposure time increases the number of X-rays and the image density
21. What is the purpose of an X-ray tube’s lead shielding?
A) To prevent leakage of X-rays and protect against radiation
B) To focus the X-ray beam
C) To increase the tube’s power
D) To dissipate heat
Answer: A) To prevent leakage of X-rays and protect against radiation
22. How does an increase in tube voltage (kV) affect image contrast?
A) It decreases image contrast
B) It increases image contrast
C) It has no effect on image contrast
D) It only affects image resolution
Answer: A) It decreases image contrast
23. What does ‘kVp’ stand for in radiology?
A) Kilovolt peak
B) Kilogram per volume
C) Kilowatt power
D) Kilojoule per photon
Answer: A) Kilovolt peak
24. What effect does a higher kVp have on X-ray penetration?
A) It increases penetration
B) It decreases penetration
C) It has no effect on penetration
D) It only affects image resolution
Answer: A) It increases penetration
25. What is the primary purpose of the X-ray tube’s anode target?
A) To convert electron energy into X-ray photons
B) To produce electrons
C) To filter X-ray beams
D) To focus the X-ray beam
Answer: A) To convert electron energy into X-ray photons
26. What is the main reason for the X-ray tube’s glass envelope being made of a special material?
A) To withstand high temperatures and maintain a vacuum
B) To focus the X-ray beam
C) To filter low-energy X-rays
D) To produce high-speed electrons
Answer: A) To withstand high temperatures and maintain a vacuum
27. How does X-ray tube heat affect imaging?
A) Excessive heat can damage the tube and degrade image quality
B) Increased heat improves image quality
C) Heat has no effect on imaging
D) Heat only affects the image resolution
Answer: A) Excessive heat can damage the tube and degrade image quality
28. What is ‘tube loading’ in the context of X-ray tubes?
A) The amount of energy used during X-ray exposure
B) The time duration of X-ray exposure
C) The frequency of X-ray production
D) The temperature of the anode
Answer: A) The amount of energy used during X-ray exposure
29. What effect does increasing the tube current (mA) have on X-ray exposure?
A) It increases the number of X-ray photons produced
B) It decreases the number of X-ray photons produced
C) It has no effect on X-ray exposure
D) It only affects the X-ray beam quality
Answer: A) It increases the number of X-ray photons produced
30. What is the typical purpose of X-ray filters?
A) To remove low-energy X-rays from the beam
B) To increase the energy of the X-rays
C) To focus the X-ray beam
D) To produce high-speed electrons
Answer: A) To remove low-energy X-rays from the beam
31. What is the significance of the X-ray tube’s focal spot size on image sharpness?
A) A smaller focal spot size improves image sharpness
B) A larger focal spot size improves image sharpness
C) Focal spot size does not affect image sharpness
D) Only the anode rotation affects image sharpness
Answer: A) A smaller focal spot size improves image sharpness
32. How does the anode angle affect X-ray production?
A) It influences the size of the effective focal spot and image sharpness
B) It changes the energy of the X-rays
C) It affects the quantity of X-rays produced
D) It has no effect on X-ray production
Answer: A) It influences the size of the effective focal spot and image sharpness
33. What is the primary purpose of the X-ray tube’s timer?
A) To control the duration of the X-ray exposure
B) To measure the X-ray intensity
C) To regulate the tube voltage
D) To focus the X-ray beam
Answer: A) To control the duration of the X-ray exposure
34. How does the X-ray tube’s glass envelope affect the X-ray production process?
A) It maintains a vacuum to allow for efficient electron flow
B) It increases the X-ray tube’s voltage
C) It controls the X-ray beam intensity
D) It filters out low-energy X-rays
Answer: A) It maintains a vacuum to allow for efficient electron flow
35. What is ‘tube output’ in X-ray radiology?
A) The amount of X-ray energy produced by the tube
B) The time duration of the X-ray exposure
C) The voltage applied to the X-ray tube
D) The current passing through the X-ray tube
Answer: A) The amount of X-ray energy produced by the tube
36. What effect does increasing the exposure time have on X-ray images?
A) It increases the amount of X-ray exposure, leading to a darker image
B) It decreases the amount of X-ray exposure, leading to a lighter image
C) It has no effect on image darkness
D) It only affects image sharpness
Answer: A) It increases the amount of X-ray exposure, leading to a darker image
37. How does an increase in tube voltage (kV) impact the X-ray beam quality?
A) It increases beam quality by producing higher energy X-rays
B) It decreases beam quality
C) It has no effect on beam quality
D) It only affects the X-ray tube’s current
Answer: A) It increases beam quality by producing higher energy X-rays
38. What does the term ‘radiographic contrast’ refer to?
A) The difference in optical density between different areas of the image
B) The amount of X-ray exposure
C) The energy of the X-ray beam
D) The size of the focal spot
Answer: A) The difference in optical density between different areas of the image
39. How does the X-ray tube’s anode rotation affect imaging?
A) It helps to dissipate heat and reduce image blurring
B) It increases the X-ray beam intensity
C) It has no effect on image quality
D) It only affects the X-ray exposure time
Answer: A) It helps to dissipate heat and reduce image blurring
40. What is the main purpose of X-ray tube filters?
A) To absorb low-energy X-rays and improve image quality
B) To increase the tube’s voltage
C) To focus the X-ray beam
D) To regulate the exposure time
Answer: A) To absorb low-energy X-rays and improve image quality
41. What is ‘tube efficiency’ in the context of X-ray production?
A) The effectiveness of the X-ray tube in converting electrical energy into X-rays
B) The speed of electron flow through the tube
C) The size of the focal spot
D) The intensity of the X-ray beam
Answer: A) The effectiveness of the X-ray tube in converting electrical energy into X-rays
42. What role does the X-ray tube’s cooling system play?
A) It prevents overheating and damage to the tube components
B) It increases the tube’s power output
C) It focuses the X-ray beam
D) It filters out low-energy X-rays
Answer: A) It prevents overheating and damage to the tube components
43. What does the ‘target angle’ of an X-ray tube anode affect?
A) The effective focal spot size and the beam’s spatial resolution
B) The X-ray tube’s voltage
C) The duration of X-ray exposure
D) The type of X-rays produced
Answer: A) The effective focal spot size and the beam’s spatial resolution
44. How does the X-ray tube’s filament size affect X-ray production?
A) A smaller filament size can produce a smaller focal spot for better image resolution
B) A larger filament size produces higher energy X-rays
C) Filament size has no effect on X-ray production
D) A smaller filament size produces higher X-ray intensity
Answer: A) A smaller filament size can produce a smaller focal spot for better image resolution
45. What is the primary purpose of the X-ray tube’s heat dissipation system?
A) To manage the heat generated during X-ray production and prevent tube damage
B) To increase the intensity of the X-ray beam
C) To focus the X-ray beam
D) To filter low-energy X-rays
Answer: A) To manage the heat generated during X-ray production and prevent tube damage
46. How does the tube current (mA) affect the X-ray beam’s intensity?
A) Increasing the tube current increases the intensity of the X-ray beam
B) Increasing the tube current decreases the beam’s intensity
C) Tube current has no effect on beam intensity
D) Tube current affects only the beam’s energy
Answer: A) Increasing the tube current increases the intensity of the X-ray beam
47. What does the ‘tube voltage’ (kV) control in an X-ray tube?
A) The energy level of the X-ray photons produced
B) The number of X-ray photons produced
C) The size of the focal spot
D) The type of X-rays emitted
Answer: A) The energy level of the X-ray photons produced
48. What is the significance of the ‘effective focal spot size’ in X-ray imaging?
A) It affects the sharpness and resolution of the X-ray image
B) It controls the amount of X-ray exposure
C) It has no effect on image quality
D) It regulates the X-ray beam intensity
Answer: A) It affects the sharpness and resolution of the X-ray image
49. What is ‘X-ray tube rating’ used for?
A) To indicate the maximum safe operating limits for the X-ray tube
B) To measure the X-ray beam quality
C) To control the exposure time
D) To focus the X-ray beam
Answer: A) To indicate the maximum safe operating limits for the X-ray tube
50. What is the function of the X-ray tube’s glass envelope?
A) To maintain a vacuum and provide insulation for the X-ray tube components
B) To focus the X-ray beam
C) To filter out low-energy X-rays
D) To increase the X-ray tube’s power output
Answer: A) To maintain a vacuum and provide insulation for the X-ray tube components
- Radiographic Imaging Techniques MCQs Radiology
- Radiation Physics MCQs Radiology
- Radiation Protection MCQs Radiology
- Anatomy and Radiology MCQs Radiology
- Contrast Agents MCQs Radiology
- Interventional Radiology MCQs Radiology
- Radiologic Pathology MCQs Radiology
- Nuclear Medicine MCQs Radiology
- Radiobiology MCQs Radiology
- Pediatric Radiology MCQs Radiology
- Emergency Radiology MCQs Radiology