LRA 211 FINAL EXAM STUDY GUIDE
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT!!!
1. What occurs during the anode heel effect?
Answer: ✔✔ The image becomes darker on the anode side.
Explanation:
The anode heel effect is a phenomenon in x-ray imaging where the
intensity of the x-ray beam is greater on the cathode side of the tube than
on the anode side. This happens due to the geometry of the x-ray tube and
the angle of the anode target. As the x-rays travel through the tube and strike
the anode, the anode side absorbs more of the radiation, resulting in a
darker image on the anode side and a lighter image on the cathode side.
2. What is the function of the anode in an x-ray tube?
Answer: ✔✔ To interact with electrons to produce x-rays.
Explanation:
The anode in an x-ray tube is the positive electrode that interacts with the
filament electrons (from the cathode). When these high-speed electrons
strike the anode target (typically tungsten), they produce x-rays via
Bremsstrahlung (braking radiation) and characteristic interactions. The
anode also plays a crucial role in dissipating the heat generated during the
x-ray production process.
3. What is the electrical charge of a proton?
Answer: ✔✔ Positive
Explanation:
A proton is a subatomic particle found in the nucleus of an atom. It carries a
, positive electrical charge. This is in contrast to electrons, which have a
negative charge, and neutrons, which have no charge.
4. X-rays and gamma rays can ionize matter, which makes them useful tools
without any risks.
Answer: ✔✔ False
Explanation:
While x-rays and gamma rays are highly useful for medical imaging and
cancer treatment, they are ionizing radiation, meaning they can remove
electrons from atoms and ionize matter. This ionization can damage
biological tissues, potentially leading to harmful effects like DNA
mutations, cell death, or increased cancer risk if the exposure is high or
prolonged. Therefore, while they are valuable tools, there are risks
associated with their use, especially in terms of radiation exposure.
5. How does the rotating anode help manage heat?
Answer: ✔✔ By spreading heat over a larger surface area.
Explanation:
The rotating anode in an x-ray tube helps manage the significant amount of
heat generated during the production of x-rays. As the anode rotates, it
distributes the heat over a larger surface area. This helps prevent
overheating at any single point on the anode and allows the tube to operate
at higher intensities without damaging the target material.
The closer the electron is to the nucleus, the stronger is its binding energy
True
How does digital technology improve the anode heel effect in x-ray imaging
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT!!!
1. What occurs during the anode heel effect?
Answer: ✔✔ The image becomes darker on the anode side.
Explanation:
The anode heel effect is a phenomenon in x-ray imaging where the
intensity of the x-ray beam is greater on the cathode side of the tube than
on the anode side. This happens due to the geometry of the x-ray tube and
the angle of the anode target. As the x-rays travel through the tube and strike
the anode, the anode side absorbs more of the radiation, resulting in a
darker image on the anode side and a lighter image on the cathode side.
2. What is the function of the anode in an x-ray tube?
Answer: ✔✔ To interact with electrons to produce x-rays.
Explanation:
The anode in an x-ray tube is the positive electrode that interacts with the
filament electrons (from the cathode). When these high-speed electrons
strike the anode target (typically tungsten), they produce x-rays via
Bremsstrahlung (braking radiation) and characteristic interactions. The
anode also plays a crucial role in dissipating the heat generated during the
x-ray production process.
3. What is the electrical charge of a proton?
Answer: ✔✔ Positive
Explanation:
A proton is a subatomic particle found in the nucleus of an atom. It carries a
, positive electrical charge. This is in contrast to electrons, which have a
negative charge, and neutrons, which have no charge.
4. X-rays and gamma rays can ionize matter, which makes them useful tools
without any risks.
Answer: ✔✔ False
Explanation:
While x-rays and gamma rays are highly useful for medical imaging and
cancer treatment, they are ionizing radiation, meaning they can remove
electrons from atoms and ionize matter. This ionization can damage
biological tissues, potentially leading to harmful effects like DNA
mutations, cell death, or increased cancer risk if the exposure is high or
prolonged. Therefore, while they are valuable tools, there are risks
associated with their use, especially in terms of radiation exposure.
5. How does the rotating anode help manage heat?
Answer: ✔✔ By spreading heat over a larger surface area.
Explanation:
The rotating anode in an x-ray tube helps manage the significant amount of
heat generated during the production of x-rays. As the anode rotates, it
distributes the heat over a larger surface area. This helps prevent
overheating at any single point on the anode and allows the tube to operate
at higher intensities without damaging the target material.
The closer the electron is to the nucleus, the stronger is its binding energy
True
How does digital technology improve the anode heel effect in x-ray imaging
