Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Imging Ch.1&2
Rad Physic
| Term | Definition |
|---|---|
| All things that are visible can be classified as _________ or ________ | Matter; energy. |
| Matter | Anything that occupies space and has form or shape. |
| Energy | The ability to do work. |
| Mass | Is measured in kilograms (kg). |
| Mass | the quantity of matter contained in any physical object. |
| Kilo | Energy is measured in joules (J). |
| Potential Energy | Is the ability to do work by virtue of position. |
| Kinetic Energy | Is the energy of motion. |
| Chemical Energy | Is the energy released by a chemical reaction. |
| Thermal Energy (heat) | Represents the work that can be done when an electron moves through an electric potential difference (voltage). |
| Nuclear Energy | Is the energy that is contained within the nucleus of an atom. |
| Electromagnetic Energy | Is the type of energy used in x-ray imaging. |
| Radiation | Energy transferred through space. |
| Electromagnetic radiation | Is radiated by the sun. |
| Matter that intercepts radiation and absorbs part or all of it is said to be exposed or _________________ | Irradiated |
| Ionizing Radiation | Is a special type of radiation that includes x-rays. |
| Ionization | Interaction b/w radiation and matter; occurs when when an x-ray passes close to an orbital electron of an atom and transfers sufficient energy to the electron to remove it from the atom. |
| Ion Pair | The Orbital electron and the atom from which to was separated. |
| Natural Environmental Radiation | Consists of 4 components: cosmic rays, terrestrial radiation, internally deposited radionuclides and radon. |
| Weight | Is used to describe the mass of an object in a gravitational field. |
| Cosmic rays | Particulate and electromagnetic radiation emitted by the sun and stars. |
| Terrestrial radiation | Emitted from deposits of uranium, thorium, and other radionuclide in the earth. |
| Internally deposited radionuclide | Natural metabolites such as potassium-40 that are internally deposited and have been part of the environmental radiation for as long as humans have been on Earth. |
| Diagnostic x-rays | The largest source of man-made ionizing radiation (3.2 mSv/yr). |
| Barium platinocyanide | A fluorescent material. |
| 3 general types of x-ray examinations | Radiography, fluoroscopy, computed tomography |
| Intensifying screen | Device that converts the energy of the x-ray beam into visible light to increase the brightness of an x-ray image. |
| Double-Emulsion Film | Radiographic film that has an emulsion coating on both sides of the base & a layer of superheat over each emulsion. |
| Cellulose Nitrate | Substitute for the glass plate. |
| Fluoroscope | Device used to image moving anatomical structures with x-rays. |
| Was invented by Thomas Edison? | Fluoroscope. |
| Collimation | The study of interactions of matter and energy in all their diverse forms. |
| Filtration | Removal of low energy x-rays from the useful beam with aluminum or another metal. It results in increased beam quality and reduced patient dose. |
| Coolidge Tube | Type of vacuum tube in use today that allows x-ray intensifying & energy to be selected separately and accurately. |
| Physics | The study of interactions of matter and energy in all their diverse forms. |
| Standard unit of _______ is the meter. | Length |
| Standard unit of _______ is kilogram. | Mass |
| Standard unit of _______ is second. | Time |
| Is the numerical value. | Magnitude |
| Is the measurement | Unit |
| Velocity | Speed |
| Acceleration | The rate of change in position with time. |
| Power | The rate of doing work. |
| Work | The product of force and distance. |
| Momentum | The product of mass and velocity. |
| Force | The force (F) that acts on an object is equal to the mass (m) of the object multiplied by the acceleration (a). |
| Exposure | Measure of the ionization produced in air by x-rays or gamma rays. Quantity of radiation intensity expressed in roentgen (R), Coulombs per kilogram (kg) or air kerma (Gy) |
| Effective Dose | Sum of specified tissues of the products of equivalent dose in a tissue and the weighting factor for the tissue. Is a method for converting a nonuniform radiation dose, with respect to risk as if the whole body were exposed. |
| Dose Equivalent | Radiation quantity that is used for radiation protection and that expresses dose common scale for all radiation. Expressed in rem or siervert. |
| Radioactivity | Rate of decay or disintegration of active material. Expressed in curie or becquerel. |
| Mechanics | A segment of physics that deals with the objects at rest (statics) or objects in motion (dynamics). |
| Inertia | A body will remain at rest or continue to move with a constant velocity in a straight line unless acted on by an external force. |
| Action/Reaction | For every action there is an equal and opposite reaction. |
| Weight | A force on a body caused by the downward pull of gravity on it. |
| Is measured in Newtons (N) | Weight |
| Is measured in joules (J) | Work |
| Is measured in watts (W) | Power |
| Energy | Energy may be transformed from one from to another but cannot be created or destroyed. The total amount of energy is constant. |
| Heat | The kinetic energy of the random motion of molecules. |
| Is the calorie (c) measured by temperature (F or C) | Heat |
| Temperature | The degree of heat or cold, expressed in terms of a specific scale. |
| Conduction | Transfer of heat by touch. |
| Convection | The mechanical transfer of rapidly moving molecules in a gas or liquid from one place to another. |
| Roentgen (R)(Gy) | - The measurement of radiation intensity in air. - The output of x-ray imaging systems are measured with this. |
| Rad (Gyt) | The measurement of ionizing radiation to exposed matter. Measures patient dose. |
| Curie (Ci)(Bq) | - The quantity of radioactive material. - Primarily used in nuclear medicine. |
| Newton's 1st Law | Inertia- a body will remain at rest or will continue to move with constant velocity in a straight line unless acted on by an external force. |
| Newton's 2nd Law | Force- the forces that acts on an object is equal to the mass of the object multiplied by the acceleration produced. |
| Newton's 3rd Law | Action/Reaction- for every action, there is an equal and opposite reaction. |
| Thermal Radiation | Is the transfer of heat by the emission of infrared radiation. |
Created by:
sassyrad
Popular Radiology sets