Abstract：
:The image artifacts characteristic of a scanning chest radiographic system are reviewed. The technique employs a pulsed beam of radiation swept in an overlapping raster pattern that can result in severe ripple and scan line artifacts with improper scanning parameters. A one-dimensional treatment of the scanner geometry shows that the artifacts can be eliminated when the beam width is an integral multiple of interpulse spacing. An extension to a two-dimensional analysis indicates that with the collimator geometries employed, artifact-free images are not possible with a fixed x-ray frequency but can be achieved when a variable frequency source is used. A treatment of the sensitivity for artifact formation shows that with proper choice of scanning parameters sizable errors in beam width can be tolerated without significant artifact formation.
journal_name
Med Physjournal_title
Medical physicsauthors
Plewes DB,Vogelstein Edoi
10.1118/1.595492subject
Has Abstractpub_date
1984-03-01 00:00:00pages
158-65issue
2eissn
0094-2405issn
2473-4209journal_volume
11pub_type
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