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Radiology

Chapter 11 Vocab - Part 2

QuestionAnswer
Scatter radiation The result of either classical scattering or the Compton effect.
Secondary radiation Radiation produced by the photoelectric effect.
Photoelectric effect One of three interactions of radiation with the human body tissues. In this effect, the x-ray photon is totally absorbed in the body tissue.
Grid ratio The effectiveness of a grid.
Grid lines Images on the radiograph produced by strips of lead placed in front of the cassette.
Stationary Grids High-frequency grids that do not move during exposure but they produce grid lines.
Grid cut-off Decreased radiographic density frequently accompanied by the appearance of obvious grid lines.
Parallel grid A grid whose radius is infinity.
Grid radius The focusing of lead strips in a grid precisely aligned to the x-ray beam at a specific source-image distance.
Grid frequency The number of lead strips per inch in a grid.
Created by: hollieritter
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