Exam I Review Flashcards
Which of the following terms could be defined as the instantaneous production of light only during an interaction between a type of energy and some element or compound?
Fluorescence
What is the relationship between wavelength & frequency of the x-ray photon?
Inverse
What unit is used to measure the energy of an individual x-ray photon?
electron volts (eV)
What unit is used to measure frequency of an x-ray photon?
Hertz (Hz)
T/F: It is impossible for x-rays to interact with matter and produce secondary radiation.
False
Which portion of the x-ray tube contains the filament?
Cathode
Which portion of the x-ray tube contains the target?
Anode
What material is the filament made of?
Tungsten
What material is the focusing cup made of?
Nickel
What is the maximum speed of the rotating anode?
10,000 rpm
The boiling off electrons from the filament is termed:
Thermionic Emission
What unit is used for electrical power?
Watts (W)
What item in the circuits are used to regulate and control voltage?
Transformers
What is the relationship between the tungsten’s atomic number and melting point?
Direct
What principle do transformers work on?
Mutual Induction
What is this law: Vs/Vp = Ns/Np
Transformer Law
Which component of the x-ray circuit is used to store electrical charge?
Capacitors
To produce 12 mAs, how long should the exposure time be?
0.02 seconds
The amount the voltage varies during x-ray exposure is termed:
Voltage Ripple
The amount of filtration required to reduce the exposure of the beam to half of its original intensity is defined as:
HVL (Half-Value Layer)
The exposure switch in x-ray is what kind of switch?
Deadman Switch
A graphical representation of the range of energies in an x-ray beam is termed:
X-Ray Emission Spectrum
When electrons strike the target, their kinetic energy is converted into _% x-ray.
1%
What is the highest energy x-ray photon that can be produced with an 80 kVp, 4 mAs technique?
80 keV
