Podcast
Questions and Answers
X-rays are described as:
X-rays are described as:
- A form of chemical energy
- A type of visible radiation
- A form of energy that transfers particles or energy from one place to another (correct)
- A form of energy only detectable by the human body
X-rays interact with which of the following ?
X-rays interact with which of the following ?
- Electrical currents
- Photogenic emulsion (correct)
- Sound waves
- Infrared sensors
Which property of X-rays ensures they are unaffected by magnetic or electrical fields?
Which property of X-rays ensures they are unaffected by magnetic or electrical fields?
- They lack electrical charge (correct)
- They travel at the speed of light
- They can’t be felt
- They travel in a straight line
What is the definition of ionizing radiation?
What is the definition of ionizing radiation?
Which statement best defines non-ionizing radiation?
Which statement best defines non-ionizing radiation?
Which of the following is an example of ionizing radiation?
Which of the following is an example of ionizing radiation?
Which of the following is NOT a characteristic of non-ionizing radiation?
Which of the following is NOT a characteristic of non-ionizing radiation?
What distinguishes the energy transfer of non-ionizing radiation?
What distinguishes the energy transfer of non-ionizing radiation?
Non-ionizing radiation is characterized by ____ wavelengths and ____ frequency
Non-ionizing radiation is characterized by ____ wavelengths and ____ frequency
Which cells are the most sensitive to radiation exposure?
Which cells are the most sensitive to radiation exposure?
What can happen if sperm or eggs are damaged by radiation?
What can happen if sperm or eggs are damaged by radiation?
What are possible effects of radiation exposure during the first trimester of pregnancy?
What are possible effects of radiation exposure during the first trimester of pregnancy?
What does the inverse square law state regarding x-ray intensity?
What does the inverse square law state regarding x-ray intensity?
What happens to the blackness of the X-ray image as the Focal Film Distance (FFD) increases?
What happens to the blackness of the X-ray image as the Focal Film Distance (FFD) increases?
Why is radiation safety important?
Why is radiation safety important?
What does the ALARA principle stand for in radiation safety?
What does the ALARA principle stand for in radiation safety?
What is the importance of the ALARA principle?
What is the importance of the ALARA principle?
What are the three time-based methods to limit radiation exposure?
What are the three time-based methods to limit radiation exposure?
What are the two recommended distance-based methods to limit radiation exposure?
What are the two recommended distance-based methods to limit radiation exposure?
What are the recommended methods for shielding?
What are the recommended methods for shielding?
What is the purpose of shielding in relation to the ALARA principle?
What is the purpose of shielding in relation to the ALARA principle?
How does scatter radiation affect x-ray quality?
How does scatter radiation affect x-ray quality?
What is the purpose of personal monitoring in radiation safety?
What is the purpose of personal monitoring in radiation safety?
Where should radiation monitoring badges be worn?
Where should radiation monitoring badges be worn?
How often should radiation monitoring badges be analyzed?
How often should radiation monitoring badges be analyzed?
How are x-rays produced in an X-ray machine?
How are x-rays produced in an X-ray machine?
Describe how x-rays are produced.
Describe how x-rays are produced.
What is the purpose of the rotating anode in an X-ray machine?
What is the purpose of the rotating anode in an X-ray machine?
What is the function of the grid in an X-ray machine?
What is the function of the grid in an X-ray machine?
What is the correct order through which the X-ray beam passes during imaging?
What is the correct order through which the X-ray beam passes during imaging?
Where is the grid located in an X-ray machine?
Where is the grid located in an X-ray machine?
What does mAs control in X-ray imaging?
What does mAs control in X-ray imaging?
What does kVp control in X-ray imaging?
What does kVp control in X-ray imaging?
What does “exposure” refer to in X-ray imaging?
What does “exposure” refer to in X-ray imaging?
When photons reach the image receptor, the film changes from:
When photons reach the image receptor, the film changes from:
What happens if mAs is set too high?
What happens if mAs is set too high?
How can you correct an overexposed radiograph caused by high mAs?
How can you correct an overexposed radiograph caused by high mAs?
What happens if kVp is set too low?
What happens if kVp is set too low?
To correct underexposure caused by low kVp, you should:
To correct underexposure caused by low kVp, you should:
If the image is overexposed, it appears white.
If the image is overexposed, it appears white.
When correcting under / over exposure, you only adjust the mAs or kVP, never both
When correcting under / over exposure, you only adjust the mAs or kVP, never both
What is image contrast?
What is image contrast?
What type of contrast is achieved with high mAs and low kVp settings?
What type of contrast is achieved with high mAs and low kVp settings?
Another term for high contrast is known as ______
Another term for high contrast is known as ______
When using high contrast techniques, the resulting image will have:
When using high contrast techniques, the resulting image will have:
Which area of the body is best imaged using high contrast techniques?
Which area of the body is best imaged using high contrast techniques?
What type of contrast is associated with low mAs and high kVp?
What type of contrast is associated with low mAs and high kVp?
Another term for low contrast is known as _____
Another term for low contrast is known as _____
Low contrast imaging is characterized by:
Low contrast imaging is characterized by:
Which body area has inherent contrast and is best imaged with low contrast techniques?
Which body area has inherent contrast and is best imaged with low contrast techniques?
What is the purpose of intensifying screens?
What is the purpose of intensifying screens?
List the benefits of intensifying screens
List the benefits of intensifying screens
What is the disadvantage of intensifying screens?
What is the disadvantage of intensifying screens?
Flashcards
X-rays
X-rays
A form of radiation that carries energy and travels in straight lines at the speed of light.
Ionizing radiation
Ionizing radiation
Radiation that can knock electrons off an atom, creating ions.
Gamma rays
Gamma rays
A type of ionizing radiation with the shortest wavelengths and highest energy.
Non-ionizing radiation
Non-ionizing radiation
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Microwaves and radio waves
Microwaves and radio waves
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Study Notes
X-rays
- X-rays are a form of radiation that transfers energy or energetic particles.
- X-rays travel at the speed of light.
- X-rays have no electrical charge and aren't affected by magnetic or electric fields.
- X-rays travel in straight lines.
- X-rays can penetrate matter to some degree.
- X-rays can cause fluorescence.
- X-rays can interact with photogenic emulsion.
- X-rays cause ionization.
- X-rays cannot be felt and are invisible.
- X-rays are part of the electromagnetic spectrum.
Ionizing Radiation
- Ionizing radiation releases energy that can remove electrons from an atom, ionizing the atom.
- Ionizing radiation has short wavelengths and high frequencies.
- Gamma rays are an example of ionizing radiation.
Non-ionizing Radiation
- Non-ionizing radiation involves energy transfer via waves.
- Microwaves and radio waves do not have enough energy to create ions.
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