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Which of the following statements regarding grids is incorrect?



A. Grids help reduce the amount of scatter radiation.
B. Grids are used when the area to be radiographed is equal to or exceeds 10 cm in thickness.
C. Grids do not absorb any part of the primary beam.
D. Grids improve the quality of the radiograph by increasing contrast.

This question is part of vtne practice exam (unfinished)

Asked by Marston, Last updated: Sep 16, 2020

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2 Answers

J. Shatner

J. Shatner

J. Shatner
J. Shatner, Content writer, Boston

Answered Oct 11, 2018

Option C - Grids do not absorb any part of the primary beam.
Grids are usually placed between the patient and the xray film to help reduce the amount of scatter radiation. Grid should be when the area to be radiographed is equal to or exceed 10cm thickness, grids are useful in such cases to improve image contrast. It is important to note that grid absorbs parts of the primary beam.

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John Smith

John Smith

John Smith
John Smith

Answered Sep 09, 2016

Grids do not absorb any part of the primary beam.-c: in radiology, grids are used to help reduce the amount of scatter radiation when radiographing large areas (10 cm thick). they are needed because larger subjects require more kvp for penetration, and more kvp produces more scatter radiation, which ultimately results in a poor quality radiograph. an important fact about grids is that they do indeed absorb some of the primary beam thereby necessitating an increase in exposure. this is accomplished by increasing the mas before taking the radiograph.
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