Imaging & History
This imaging modality produces cross-sectional images using an x-ray tube that rotates around the patient.
CT
A book resting on a high shelf possesses this type of stored energy because of its position.
Potential energy
These two particles are found within the nucleus and are collectively known as nucleons.
Protons and neutrons
Completely removing an electron from an atom creates an ion and is known as this process.
Ionization
This naturally occurring radioactive gas is responsible for the largest contribution to average natural background exposure.
Radon
One major benefit of the Coolidge tube was that the operator could independently control the quantity and this characteristic of the x-ray beam.
CT
This SI unit is used to measure energy and work.
Joule (J)
A neutral atom contains 20 protons. It must also contain this many electrons.
20 electrons
Atoms of the same element that contain different numbers of neutrons are called these.
Isotopes
Reducing exposure duration, increasing distance, and using protective barriers represent these three fundamental radiation-safety principles.
Time, distance, and shielding
Wilhelm Conrad Röentgen's discovery of x-rays occurred near the end of this decade.
1890
Radiation dose that accounts for biological effect and is expressed in Sv uses this SI unit.
Sievert
Using the relationship 2n2, this is the maximum number of electrons that can occupy the second electron shell.
8 electrons
Two different elements have the same mass number but different atomic numbers. They are classified as these.
Isobars
Tight restriction of the x-ray beam to the anatomy of interest decreases patient exposure and reduces production of this unwanted radiation.
Scatter radiation
This x-ray tube, introduced in the early 20th century, used a heated filament to produce electrons more reliably than earlier gas tubes.
Coolidge tube
This quantity describes the kinetic energy released to charged particles when photons interact in air.
Air kerma
Electrons located closest to the nucleus generally have this relationship to binding energy compared with electrons in outer shells.
Greater binding energy
During beta-minus emission, a neutron is converted into a proton. As a result, the atomic number changes in this way.
Increases by 1
During an AEC exposure, the anatomy must adequately cover the selected detector because the detector controls this aspect of the exposure.
When the exposure terminates
One major benefit of the Coolidge tube was that the operator could independently control the quantity and this characteristic of the x-ray beam.
Energy or penetrating ability
A dose quantity expressed in sieverts may account for radiation type and the sensitivity of irradiated tissues. This is commonly called this type of dose.
Equivalent or effective dose
An atom contains 38 protons and has a mass number of 88. This is the number of neutrons in the nucleus.
50 neutrons
A radioactive source has an initial activity of 160 MBq. After four half-lives, this amount of activity remains.
10 MBq
A radiographer selects the correct AEC chamber, but a low-density region is positioned over most of the detector instead of the intended anatomy. The exposure is most likely to end in this manner.
Too early, resulting in insufficient receptor exposure