LRA 222 week 3

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Medicine - Radiology

snashuhaimdinx Created by 9 mon ago

Cards in this deck(50)

What is the main disadvantage of using a three-phase power supply in X-ray imaging?

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High frequency generators are primarily used in which types of imaging machines?

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Scatter radiation is primarily the result of which type of interaction?

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What are the two major factors that contribute to scatter radiation in X-ray imaging?

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Digital Image Receptors (IRs) are more sensitive to which levels of radiation energy?

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What shape does the unrestricted X-ray beam typically have?

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What effect does increased collimation have on patient dose in X-ray imaging?

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What happens to scatter radiation when collimation is decreased?

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How does increased collimation affect image contrast in X-ray imaging?

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What is the historical development of dose in relation to collimation and focusing in X-ray imaging?

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Beam restricting devices in X-ray imaging are typically made of what materials?

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What is an aperture diaphragm in the context of X-ray imaging?

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Using an aperture in X-ray imaging results in what type of images?

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What is an aperture with an extended attached flange called in X-ray imaging?

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What are considered the best beam restricting devices in X-ray imaging?

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Auto collimation in X-ray imaging is also known as what?

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What is the function of an auto collimator in X-ray imaging?

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To what size does an auto collimator automatically adjust in X-ray imaging?

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What is considered the best way to limit scatter radiation in X-ray imaging?

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What is a grid in X-ray imaging and what is its primary function?

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Grids are used with anatomic parts that are of what size or greater?

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What does grid frequency refer to in the context of X-ray imaging?

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What is the grid ratio in X-ray imaging?

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High ratio grids are more effective at removing or cleaning up what in X-ray imaging?

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How does the absorption of scatter radiation by grids affect image contrast in X-ray imaging?

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What are the two types of grid patterns used in X-ray imaging?

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Why are linear grids most popular in X-ray imaging?

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In which imaging scenarios are parallel grids typically used?

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What is the advantage of using focused grids in X-ray imaging?

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What is the focal distance used for in the context of focused grids in X-ray imaging?

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What does the focal range refer to in X-ray imaging?

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What is a wafer grid and how is it used in X-ray imaging?

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What is a grid cassette in X-ray imaging?

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What is a grid cap and how is it used in X-ray imaging?

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What are the three types of stationary grids used in X-ray imaging?

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With which type of grids is it possible to see grid lines in X-ray imaging?

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Where are reciprocating grids located in X-ray imaging setups?

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What is a long dimension linear grid in X-ray imaging?

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What is a short dimension linear grid in X-ray imaging?

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When is a short dimension linear grid particularly useful in X-ray imaging?

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What is the primary purpose of using grids in X-ray imaging?

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What happens to patient dose as grid ratio increases in X-ray imaging?

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What is grid cutoff in X-ray imaging?

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What is a potential issue with higher grid ratios in X-ray imaging?

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What happens when an upside-down focused grid is used in X-ray imaging?

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What is the most common type of grid cutoff in X-ray imaging?

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What can result if the grid frequency is similar to the laser scanning frequency during CR image processing?

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What effect does an air gap have on OID and scatter in X-ray imaging?

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Why does increasing OID reduce scatter in X-ray imaging?

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What is the effect of a greater air gap on scatter reaching the IR in X-ray imaging?

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