Rad Physics Chapter 6 the X-Ray
Imaging System Questions and Answers
Already Passed
What is the primary function of the X-ray imaging system?
✔✔ To produce X-rays for diagnostic imaging.
What is the purpose of the X-ray tube housing?
✔✔ To contain radiation and protect the tube components.
What component generates electrons in the X-ray tube?
✔✔ The cathode.
What is the function of the anode in the X-ray tube?
✔✔ To serve as a target for electrons and produce X-rays.
What material is typically used for the filament in the cathode?
✔✔ Tungsten.
1
,Why is tungsten used in the X-ray tube?
✔✔ Its high melting point and efficient X-ray production.
What is the role of the focusing cup in the cathode assembly?
✔✔ To direct the electron stream toward the anode.
What happens to electrons when they strike the anode target?
✔✔ They produce X-rays and heat.
What is the purpose of rotating the anode in an X-ray tube?
✔✔ To dissipate heat more effectively.
What type of motor is used to rotate the anode?
✔✔ An induction motor.
What does the term "tube current" refer to?
✔✔ The flow of electrons from cathode to anode.
2
,What unit measures the tube current?
✔✔ Milliamperes (mA).
What determines the energy of the X-ray beam?
✔✔ The kilovolt peak (kVp).
What is the function of the step-up transformer in the imaging system?
✔✔ To increase voltage for X-ray production.
What is the role of the step-down transformer in the system?
✔✔ To reduce voltage for the filament circuit.
What does the autotransformer control in the X-ray system?
✔✔ It adjusts the voltage supplied to the step-up transformer.
What is the function of the rectifier in the X-ray circuit?
✔✔ To convert alternating current (AC) to direct current (DC).
3
, Why is direct current necessary in the X-ray tube?
✔✔ To ensure electrons flow in one direction from cathode to anode.
What is the purpose of the high-voltage generator in the X-ray system?
✔✔ To provide the necessary energy for X-ray production.
What is the primary purpose of the control console in the X-ray system?
✔✔ To allow the operator to set exposure factors like kVp and mA.
What does the mAs setting control in an X-ray system?
✔✔ The total quantity of X-rays produced.
What does kVp control in the imaging system?
✔✔ The energy and penetration ability of the X-ray beam.
What is the significance of using automatic exposure control (AEC)?
✔✔ To terminate the exposure once the correct image density is achieved.
4
Imaging System Questions and Answers
Already Passed
What is the primary function of the X-ray imaging system?
✔✔ To produce X-rays for diagnostic imaging.
What is the purpose of the X-ray tube housing?
✔✔ To contain radiation and protect the tube components.
What component generates electrons in the X-ray tube?
✔✔ The cathode.
What is the function of the anode in the X-ray tube?
✔✔ To serve as a target for electrons and produce X-rays.
What material is typically used for the filament in the cathode?
✔✔ Tungsten.
1
,Why is tungsten used in the X-ray tube?
✔✔ Its high melting point and efficient X-ray production.
What is the role of the focusing cup in the cathode assembly?
✔✔ To direct the electron stream toward the anode.
What happens to electrons when they strike the anode target?
✔✔ They produce X-rays and heat.
What is the purpose of rotating the anode in an X-ray tube?
✔✔ To dissipate heat more effectively.
What type of motor is used to rotate the anode?
✔✔ An induction motor.
What does the term "tube current" refer to?
✔✔ The flow of electrons from cathode to anode.
2
,What unit measures the tube current?
✔✔ Milliamperes (mA).
What determines the energy of the X-ray beam?
✔✔ The kilovolt peak (kVp).
What is the function of the step-up transformer in the imaging system?
✔✔ To increase voltage for X-ray production.
What is the role of the step-down transformer in the system?
✔✔ To reduce voltage for the filament circuit.
What does the autotransformer control in the X-ray system?
✔✔ It adjusts the voltage supplied to the step-up transformer.
What is the function of the rectifier in the X-ray circuit?
✔✔ To convert alternating current (AC) to direct current (DC).
3
, Why is direct current necessary in the X-ray tube?
✔✔ To ensure electrons flow in one direction from cathode to anode.
What is the purpose of the high-voltage generator in the X-ray system?
✔✔ To provide the necessary energy for X-ray production.
What is the primary purpose of the control console in the X-ray system?
✔✔ To allow the operator to set exposure factors like kVp and mA.
What does the mAs setting control in an X-ray system?
✔✔ The total quantity of X-rays produced.
What does kVp control in the imaging system?
✔✔ The energy and penetration ability of the X-ray beam.
What is the significance of using automatic exposure control (AEC)?
✔✔ To terminate the exposure once the correct image density is achieved.
4
