Document Detail


Correction for spectral artifacts in cross-sectional reconstruction from x rays.
MedLine Citation:
PMID:  840189     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A monoenergetic response correction is described which, along with adequate filtration, may be used to remove the spectral shift artifact encountered in three-dimensional reconstruction from x rays. Reconstructions were carried out by means of a convolution algorithm for simulated data using this method. These are compared with reconstructions obtained using fixed-length water-bath scans as a remedy for the special artifact. These studies suggest that the spectral artifact can be successfully eliminated from computerized cross-sectional scans without resorting to the use of the water bath while, at the same time, improving quantum statistics and/or permitting operation at a lower tube current.
Authors:
W D McDavid; R G Waggener; W H Payne; M J Dennis
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medical physics     Volume:  4     ISSN:  0094-2405     ISO Abbreviation:  Med Phys     Publication Date:    1977 Jan-Feb
Date Detail:
Created Date:  1977-04-25     Completed Date:  1977-04-25     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0425746     Medline TA:  Med Phys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  54-7     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Filtration
Models, Theoretical
Physical Phenomena
Physics
Spectrum Analysis
Tomography, X-Ray Computed / instrumentation*,  standards
Water
X-Rays
Chemical
Reg. No./Substance:
7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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