Quiz Questions Practice Flashcards
Which of the following is not a method of X-ray support?
a. Ceiling
b. Floor-to-Ceiling
c. Stationary
d. C-arm
c. Stationary
The rotating anode has _______ to _________ RPM.
3,600 to 10,000 RPM (Rotations Per Minute)
The Target disc is made of 3 layers
- Tungsten/Rhenium
- Molybdenum
- Graphite
X-rays that are emitted through the window of protective housing is called?
Primary beam/Useful Beam
Which statement is true regarding the protective housing of the x-ray tube?
Lined with lead composite to prevent leakage radiation
The protective housing contains ____ to insulate from shock and dissipate heat
Oil
Milliampere (mA) and time (s) controls?
Quantity and Density
Kilovoltage (kV) controls?
-Quality
-Penetrating Power
-Energy
-Contrast and Density
High melting point for tungsten is ?
3410 °C/6170°F
Small focal spot size (FSS) filament uses ______ mA or less
200 mA
Large focal spot size (FSS) filament uses ______ mA or more
300 mA
The ________ surrounds the filament on the cathode side
Focusing Cup
The _________ prevents subsequent electrons from being boiled off due to electrostatic repulsion
Space-Charge Effect
What is the positive side of the x-ray tube called?
Anode
What structure(s) is found on the negative side of the x-ray tube?
A) Dual focus
B) focusing cup
C) coiled wires
D) All of the above
D) All of the Above
What travels from the negative side of the X-ray tube to the positive side
Stream of electrons (cathode ray)
What primary material is used in the construction of the anode?
Tungsten
Why is Tungsten the metal of choice?
High atomic number, high melting point, readily dissipates heat
The area of the disc where the electrons strike (rotating - track)
Target
Electron to x-ray efficiency is ___%
1%
