X-ray production Flashcards
X-ray that results from interaction of the projectile electron with a target nucleus; braking radiation, is the definition of
Bremsstrahlung
In the diagnostic range, most x-rays are
Bremsstrahlung
Only approximately _____ of projectile electron kinetic energy is used for the production of x-radiation; the other _____ is converted into __________
1%, 99%, heat
When the projectile electron interacts with an inner-shell electron to eject it, what type of x-ray is produced?
Characteristic
What types of x-rays are emitted when an outer-shell electron fills an inner-shell void?
Characteristic
The cathode is the ________ side of the x-ray tube; it has two primary parts, a __________ and a ___________
Negative, filament, focusing cup
What is the anode heel affect?
Uneven beam intensity. Because of the angled anode target, the radiation intensity is greater on the cathode side of the x-ray field than the anode side = one side darker than the other
What are the 2 main internal structures of the x-ray tube
The anode and cathode
The smaller the anode angle, the ______ the heel effect
Larger
Increasing ________ increases the quality of an x-ray beam
kV
Of mAs and kVp, x-ray quantity is affected by _____, and x-ray quality is affected by ____?
mAs, kV
The three primary selectable parameters on the x-ray control panel are
mA, kV and exposure time
What does kV control?
The quality of x-ray beam produced
The contrast/ grey-scale in produced x-ray
What does mA control?
Size of electron cloud # of x-ray photons produced
What does s control?
Exposure time
