Artifacts produced by moving grids.

Abstract:

:Anti-scatter grids reduce the amount of secondary radiation contributing to the image and improve the signal-to-noise ratio. However, they may also lead to the creation of linear artifacts representing the shadows of the radiopaque septa. Grid motion perpendicular to the septa during the exposure can cause blurring of the artifacts; however, the wider septa of recently proposed grids increase the difficulty of suppressing the artifacts entirely. Physical characteristics which affect perceptibility of grid-line artifacts and the conditions needed for their elimination are analyzed. Sufficient grid movement can eliminate overlap artifacts, while synchronization of linear grid motion with exposure time can suppress artifacts for relatively small grid movements.

journal_name

Radiology

journal_title

Radiology

authors

Bednarek DR,Rudin S,Wong R

doi

10.1148/radiology.147.1.6828740

subject

Has Abstract

pub_date

1983-04-01 00:00:00

pages

255-8

issue

1

eissn

0033-8419

issn

1527-1315

journal_volume

147

pub_type

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