Term
|
Definition
| Energy emitted and transferred thru space |
|
|
Term
|
Definition
| any type of radiation that is capable of removing electrons |
|
|
Term
|
Definition
| Any subatomic particle in motion & possessing sufficient energy capable of causing ionization |
|
|
Term
|
Definition
| Contains 2 protons and 2 neutrons, is equivalent to a helium nucleus, and is emitted from the nuclei of heavy elements as they undergo radioactive decay. It has great mass and a positive charge. |
|
|
Term
|
Definition
| Identical to an electron, except it is emitted from the nuclei of radioactive materials; it is very light and negatively charged. |
|
|
Term
| Electromagnetic radiation |
|
Definition
| A form of energy resulting from electric and magnetic disturbances in space |
|
|
Term
|
Definition
| EMRs can behave as a wave and/or a particle (bundle) of energy |
|
|
Term
|
Definition
|
|
Term
|
Definition
the distance between similar points on a sine wave; the length of one cycle.
Measure in angstroms. |
|
|
Term
|
Definition
The number of cycles or wavelengths per unit of time.
Measured in cps or Hz. |
|
|
Term
|
Definition
Speed of light (c)
3x10^8 m/s |
|
|
Term
|
Definition
|
|
Term
|
Definition
| the emission of particles and energy to reach stability |
|
|
Term
|
Definition
| Naturally occurring process whereby an unstable atomic nucleus relieves its instability through the emission of one or more energetic particles. |
|
|
Term
| radioactive disintegration |
|
Definition
| Process by which the nucleus spontaneously emits particles and energy and transforms itself into another atom to reach stability |
|
|
Term
|
Definition
| When the daughter element differs from the parent element |
|
|
Term
| Radioactivity measurement |
|
Definition
| Curies (Ci) or Bequerel (Bq) |
|
|
Term
|
Definition
| Time required for a quantity of radioactivity to be reduced to half its original value |
|
|
Term
| Physical half-life (T 1/2) |
|
Definition
| The time required for a quantity of radioactivity to be reduced to half its original value |
|
|
Term
|
Definition
| Time required for the body to eliminate half of the dose by elimination |
|
|
Term
|
Definition
| Time required for activity to diminish 50% |
|
|
Term
| Roentgen discovered x-rays when? |
|
Definition
|
|
Term
| X-ray tube used by Roentgen |
|
Definition
|
|
Term
|
Definition
1. Penetrating, invisible EMRs
2. Electrically neutral
3. Polyenergetic/heterogenous
4. Release heat
5. Travel in straight lines
6. Travel at speed of light
7. Cause fluoroescence
8. Can't be focused by a lens
9. Affect film
10. Produce chemical & bilogical change
11. Produce 2ndary & scatter radiation |
|
|
Term
|
Definition
| Intensity of wavelength; defined by max height |
|
|
Term
| Condition necessary for x-ray production |
|
Definition
1. Source of electrons
2. Movement of electrons
3. Focus of electrons
4. Stopping of electrons |
|
|
Term
|
Definition
| X-ray that results from interaction of the projectile electron with a target nucleus; aka braking radiation. |
|
|
Term
| Emission of radiations by radioactive substances is unaffected by: |
|
Definition
| Temperature, pressure or chemical combo |
|
|
Term
| Charge of an alpha particle |
|
Definition
|
|
Term
| Range of an alpha particle, in air |
|
Definition
|
|
Term
| Charge of a Beta particle |
|
Definition
|
|
Term
| Range of a Beta particle, in air |
|
Definition
|
|
Term
| The beta particle is a very high energy _________ |
|
Definition
|
|
Term
| Charge of gamma radiation |
|
Definition
|
|
Term
| Range of gamma radiation, in air |
|
Definition
|
|
Term
| What can stop an alpha particle? |
|
Definition
|
|
Term
| What can stop a beta particle? |
|
Definition
|
|
Term
|
Definition
|
|
Term
| The Principle of Conervation of Energy |
|
Definition
| All energy of the universe is constant and can change form |
|
|
Term
| All electromagnetic waves travel at _______ |
|
Definition
|
|
Term
| A ______ relationship exisits between wavelength and frequency. |
|
Definition
|
|
Term
|
Definition
|
|
Term
| At 100 kVp, characteristic radiation makes up ______% of primary beam. |
|
Definition
|
|
Term
|
Definition
| The spectrum of characteristic radiation |
|
|
Term
| What determines the amount of energy possessed by a photon? |
|
Definition
|
|
Term
| Brem's radiation makes up _____% of the primary beam. |
|
Definition
|
|
Term
| Diagnostic range of useful x-ray wavelengths. |
|
Definition
|
|
Term
| Characteristic radiation is produced when: |
|
Definition
| A lower orbital electron fills a vacancy in a higher energy level. |
|
|
Term
| Which spectrum demonstrates Brem's radiation? |
|
Definition
|
|
Term
| The target of an x-ray tube is made out of: |
|
Definition
|
|
Term
| The filament of an x-ray tube is made out of: |
|
Definition
|
|
