RAD 105
RAD 105 Final Exam Questions and
Answers
What kind of x-ray emission spectrum does the Brems' x-ray employ?
continuous
What kind of x-ray emission spectrum does the Characteristic x-ray employ?
discrete
What is the placement of characteristic energy emission in an x-ray spectrum
dependent on?
electrons transitions from the m-shell or l-shell to the k-shell
What is the total filtration required at or above 70 kVp?
2.5 al eq
What directly affects the quality of an x-ray?
kVp
What should you do. if you want to improve the quality. or "harden" thhe x-ray
beam?
add filtration
How much energy is produced when the L-shell electron takes the place of the K-
shell electron?
57.4 kEv
Energy of each photon in the x-ray beam is different. This means the x-ray
emission spectrum is____?
heterogenous
What can. the x-ray emission spectrum NOT be used to determine?
incoming voltage energy
RAD 105
, RAD 105
What determines the energy of projectile electrons?
kVp
mA is directly proportional to what?
quantity of x-rays produced
When going from single-phase to three-phase or high-frequency machines, what
happens?
intensity and average energy increases
What changes on the x-ray emission spectrum when you change the material of the
anode?
the number of photon interactions and peaks
What does kVp change?
projectile energy, intensity, maximum and average energy
What is maximum number of electrons that can be in the M-shell?
18
What is the equation for electrons in an atoms orbital shell?
2n^2
What is the tube housing for?
absorption of leakage radiation
What is the maximum amount of radiation that can be leaked from tube housing?
1mGy/H at 1m
What is the disadvantage of the glass envelope?
evaporated tungsten leads to electron arching
What is the filament made of?
coil of thorium impregnated tungsten
What is the focal track/target made up of?
RAD 105
RAD 105 Final Exam Questions and
Answers
What kind of x-ray emission spectrum does the Brems' x-ray employ?
continuous
What kind of x-ray emission spectrum does the Characteristic x-ray employ?
discrete
What is the placement of characteristic energy emission in an x-ray spectrum
dependent on?
electrons transitions from the m-shell or l-shell to the k-shell
What is the total filtration required at or above 70 kVp?
2.5 al eq
What directly affects the quality of an x-ray?
kVp
What should you do. if you want to improve the quality. or "harden" thhe x-ray
beam?
add filtration
How much energy is produced when the L-shell electron takes the place of the K-
shell electron?
57.4 kEv
Energy of each photon in the x-ray beam is different. This means the x-ray
emission spectrum is____?
heterogenous
What can. the x-ray emission spectrum NOT be used to determine?
incoming voltage energy
RAD 105
, RAD 105
What determines the energy of projectile electrons?
kVp
mA is directly proportional to what?
quantity of x-rays produced
When going from single-phase to three-phase or high-frequency machines, what
happens?
intensity and average energy increases
What changes on the x-ray emission spectrum when you change the material of the
anode?
the number of photon interactions and peaks
What does kVp change?
projectile energy, intensity, maximum and average energy
What is maximum number of electrons that can be in the M-shell?
18
What is the equation for electrons in an atoms orbital shell?
2n^2
What is the tube housing for?
absorption of leakage radiation
What is the maximum amount of radiation that can be leaked from tube housing?
1mGy/H at 1m
What is the disadvantage of the glass envelope?
evaporated tungsten leads to electron arching
What is the filament made of?
coil of thorium impregnated tungsten
What is the focal track/target made up of?
RAD 105
