This determines the number of electrons boiled off the filament.
What is mA
100
When an electron is influenced by the positive field of the nucleus, it decelerates, thereby losing some or all of its kinetic energy. The energy lost is radiated as an x-ray of equivalent energy.
What is Bremstrahlung radiation
100
The amount of x-rays emitted, which is directly proportional to mA.
What is X-ray quantity
100
The ability of the x-ray beam to penetrate matter.
What is x-ray quality
100
The center of the x-ray beam.
What is the central ray
200
The number of photons in the x-ray beam is ______ proportional to the current across the x-ray tube.
What is directly
200
An electron interacting with an inner orbital electron of the target atom, ejecting it from its orbit. The energy used to fill that vacancy emits a specific amount of radiation.
What is Characteristic radiation
200
The exposure rate is directly proportional to _______.
What is mA
200
As kV increases, ________ increases.
What is penetration
200
A radiographic exposure factor that regulates the intensity (amount) of radiation emitted by the x-ray tube.
What is milliamperes
300
When electrons are separated from the x-ray tube filament.
What is thermionic emission
300
The name for the atom when an electron is ejected, thus making it unstable
What is ionized
300
The exposure is ________ proportional to distance squared.
What is inversely
300
Added to an x-ray beam to increases the effective energy, but not the minimum wavelength.
What is filtration
300
The distance between the surface of the film and the anatomic structure.
What is OID
400
Kinetic energy applied to the electrons to propel them across the x-ray tube.
What is kV
400
The tube potential needed to produce k-characteristic x-rays.
What is 70 kV
400
The thicker the filter and the higher its atomic number, the _______ the reduction in the exposure rate beyond the filter.
What is greater
400
As atomic number of the __________ increase, the high energy photons increases in number more readily that the low energy photons.
What is target material
400
Radiation which is the product of the interactions of primary photons. It is emitted in all directions and creates a radiation field around the patient.
What is scatter radiation
500
Given the ability to use less mA with higher kV, the patient and technologist receives ______ radiation exposure.
What is less
500
Varying energies and wavelengths because the amount of deceleration varies among electrons according to their kinetic energy.
What is polyenergetic
500
As the atomic number of the target material increases, the efficiency of the production of the bremstrahlung radiation _________.
What is increases
500
High energy, high frequency, short wavelength, and more penetrating photons--high KE of electrons moving from cathode to anode.
What is high kV
500
The area of electron bombardment, and thus, the area of the x-ray generation located on the target of the anode.