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Stack #158346
Radiographic Imaging
| Question | Answer |
|---|---|
| process by which a beam of radiation is reduced in energy when passing through tissue or other materials. | Attenuation |
| Theoretical center of a beam of radiation. | Central Ray |
| Degree of darkening of exposed and processed photographic or radiographic film | Density |
| Misinterpretation of the true size of shape of an object. | Distortion |
| With motion | Dynamic |
| Unwanted exposure or film densities | Fog |
| Device consisting of thin lead strips designed to permit primary radiation to pass while reducing scatter radiation. | Grid |
| Amount of filtration necessary to reduce the intensity of the radiation beam to one half its original value. | Half-Value Layer |
| Medium used to capture the image for recording, such as x-ray film or a digital imaging plate. | Image Receptor |
| Layer of luminescent crystals placed inside a cassette to expose x-ray film efficiently and thereby significantly reduce patient dose. | Intensifying Screen |
| Mathematical formula that describes the relationship between radiation intensity and distance from the source of the radiation. | Inverse Square Law |
| Measure of the potential difference, which controls the quality and quantity of x-ray photons produced in the x-ray tube. | Kilovoltage Peak |
| Invisible image created after exposure but before processing. | Latent image |
| Measurement of milliamperage times seconds, which controls the quantity of x-ray photons produced in the x-ray tube. | Milliampere Seconds |
| Ability of an x-ray beam to pass through an object, controlled by the kVp of the beam. | Penetrating Ability |
| Fuzzy border of an object as imaged radiographically. | Penumbra |
| Quantum or particle of radiant energy | Photon |
| automatic collimation system used on diagnostic x-ray units. | Positive Beam Limitation |
| x-ray beam after it leaves the x-ray tube and before it reaches the object | Primary Radiation |
| permitting the passage of x-rays or other forms of energy with little attenuation | Radiolucent |
| not easily penetrable by x-rays or other forms of radiant energy. | Radiopaque |
| Representation of an object's true borders | Recorded Detail |
| Relative measurements of the speed of radiographic film and intensifying screen system. | Relative Speed |
| Radiation resulting after the x-ray beam hits the object. | Remnant Radiation |
| A measurement of the recorded detail on a radiograph. | Resolution |
| Radiation produced from x-ray photon interactions with matter in such a way that the resulting photons have continued in a different direction. | Scatter Radiation |
| The distance between the source of the x-rays (usually the focal spot of the x-ray tube) and the image receptor. | Source-to-Image Receptor Distance |
| Unmoving | Static |
| True border of an object as imaged radiographically. | Umbra |
Created by:
J. Renee
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