Podcast
Questions and Answers
Which one of these is the correct equation for calculating the grid ratio?
Which one of these is the correct equation for calculating the grid ratio?
- Grid Ratio = h/D (correct)
- Grid Ratio = h x D
- Grid Ratio = h - D
- Grid Ratio = D/h
What does the grid frequency refer to?
What does the grid frequency refer to?
- The ability of the grid to remove scatter and improve contrast
- The ratio of height to width of interspaces
- The number of radiopaque strips per unit length (correct)
- The percentage of photons that interact with the lead on the surface
What does the grid surface X-ray absorption represent?
What does the grid surface X-ray absorption represent?
- The width of the interspace
- The width of the grid septa
- The mass per unit area of the grid
- The percentage of photons that interact with the lead on the surface (correct)
What is the formula for calculating the bucky factor?
What is the formula for calculating the bucky factor?
According to the text, what is the formula for the Inverse Square Law?
According to the text, what is the formula for the Inverse Square Law?
According to the text, what is the formula for the Direct Square Law?
According to the text, what is the formula for the Direct Square Law?
What is the impact of scatter on image contrast?
What is the impact of scatter on image contrast?
Which one of these is the correct equation for calculating the inverse square law?
Which one of these is the correct equation for calculating the inverse square law?
What is the impact of scatter on image contrast?
What is the impact of scatter on image contrast?
How would scatter impact AEC function?
How would scatter impact AEC function?
According to the text, what is the formula for calculating the grid ratio?
According to the text, what is the formula for calculating the grid ratio?
What is the formula for calculating the lead content of a grid?
What is the formula for calculating the lead content of a grid?
What is the formula for calculating the percentage of grid surface X-ray absorption?
What is the formula for calculating the percentage of grid surface X-ray absorption?
What factors should be used when imaging a knee with a grid that has a bucky factor of 2, if the non-grid technique uses factors of 70kVp at 5mAs?
What factors should be used when imaging a knee with a grid that has a bucky factor of 2, if the non-grid technique uses factors of 70kVp at 5mAs?
Which one of these interactions is the predominant interaction of x-rays in the diagnostic energy range with soft tissue?
Which one of these interactions is the predominant interaction of x-rays in the diagnostic energy range with soft tissue?
Which one of these interactions occurs when an incident photon interacts with an inner shell electron and the energy of the incident photon is slightly greater than the binding energy of the electron?
Which one of these interactions occurs when an incident photon interacts with an inner shell electron and the energy of the incident photon is slightly greater than the binding energy of the electron?
Which one of these interactions involves the incident photon interacting with a single electron, causing the electron to vibrate or oscillate, and the scattered photon having the same energy and wavelength as the initial photon but traveling in a slightly different direction?
Which one of these interactions involves the incident photon interacting with a single electron, causing the electron to vibrate or oscillate, and the scattered photon having the same energy and wavelength as the initial photon but traveling in a slightly different direction?
Which one of these interactions occurs when an incident photon interacts with the whole atom, causing excitation of all electrons, and the scattered photon has very low energy in the range of 15 to 30 keV?
Which one of these interactions occurs when an incident photon interacts with the whole atom, causing excitation of all electrons, and the scattered photon has very low energy in the range of 15 to 30 keV?
Which interaction between high energy photon and the nucleus is relevant to diagnostic imaging?
Which interaction between high energy photon and the nucleus is relevant to diagnostic imaging?
What is the formula for calculating the probability of a photoelectric effect interaction?
What is the formula for calculating the probability of a photoelectric effect interaction?
What happens to the number of Compton and photoelectric interactions when the energy of the x-ray photon is doubled?
What happens to the number of Compton and photoelectric interactions when the energy of the x-ray photon is doubled?
What is the threshold energy for pair production?
What is the threshold energy for pair production?
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