X-ray Production
The difference between x-rays and gamma rays.
What is their origin?
Type of filtering material.
What is aluminum?
This interaction occurs when an x-ray photon interacts with a loosely bound outer shell electron.
Automatic collimation.
What is positive beam limitation?
The percentage of kinetic energy of electron converted to heat.
What is 99%?
Purpose of filtration.
What is reducing patient dose?
This interaction occurs when an x-ray photon kicks out an inner shell electron and all of its energy is absorbed.
What is Photoelectric absorption?
This scale of contrast is seen with decreased kVp.
What is short scale?
The interaction at the focal spot where an incoming electron interacts with the field of the nucleus, changes direction, energy lost produces and x-ray photon.
What is a Bremsstrahlung interaction?
This filter is typically used for t-spine exams.
What is a wedge filter?
A result of pair production between a positron and a free electron.
What is the annihilation reaction?
Increase in tissue thickness will increase this interaction.
What are Compton interactions?
The interaction at the focal spot where an inner shell electron is ejected and is filled with another electron. The loss of energy from the jump of an electron from an outer shell to an energy shell releases a photon.
What is a characteristic interaction?
This measures beam quality.
What is half value layer?
This interaction can only occur at 10 MeV or higher.
What is photodisintegration?
The shutters closest to the x-ray tube reduce this.
What is off-focus radiation?
This change in the emission spectrum will occur with an increase in mAs.
What is an increase in amplitude?
X-rays systems have this much inherent filtration.
What is .5 mmAl?
The percentage of Compton interactions increase with an increase in this technical factor.
What is kVp?
The lower shutters of the collimator reduce this.
What is penumbra?