Chapter 3 Flashcards
What determines the energy and penetrating power of radiation?
wavelength
X-rays with shorter wavelengths are ___, have more ___ and more ___ power.
stronger; energy; penetrating
What is used to describe the mean energy and penetrating power of an x-ray beam?
quality
what is controlled by kilovoltage?
quality
what is a measurement of force that refers to the potential difference between two electrical charges?
voltage
If voltage is ___ , the ___ of electrons is increased.
increased; speed
T/F. Electrons strike targets with greater force and energy resulting in penetrating x-rays and short wavelengths.
true
1 kV = ___ volts
1000
T/F. The greater the kV, the less penetrating dental x-rays are. They use less energy and have longer wavelengths.
False, the greater the kV, the MORE penetrating dental x-rays are. They use MORE energy and have SHORTER wavelengths.
Today’s units use ___ - ___ kV.
60 - 70
What does 70 kVp mean?
the peak/maximum voltage is 70,000 volts of an alternating current (AC)
kV regulates ___ across the x-ray tube and controls the ___ of electrons.
voltage; speed
what is the overall darkness or blackness of an image.
density
high kV = ___ density = too ___
low kV = ___ density = too ___
high; dark
low; light
What refers to how sharply dark and light areas are differentiated or separated on an image?
contrast