Linked Life Data

8413018

Source:http://linkedlifedata.com/resource/pubmed/id/8413018

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1993-11-22
pubmed:abstractText
Iterative filtered backprojection (FBP) reconstruction is a fast method for single photon emission computed tomography (SPECT) that can provide simultaneous compensation for nonuniform attenuation, scatter, and distance-dependent detector response. The iterative FBP method was applied to the reconstruction of SPECT images of a chest phantom consisting of nonuniform attenuating media. One hundred twenty projections containing 20 million counts were reconstructed on an image array of 128 x 128 x 64. The accuracy of reconstruction was significantly improved, in terms of concentration ratio, object shape, and noise reduction. Results of this experimental study indicate that interactive FBP can effectively reconstruct SPECT images, while other iterative methods, such as maximum a posteriori probability (MAP), will spend at least ten times more computing effort in the reconstruction on the same computer. The disadvantage of iterative FBP is its inability to model the noise properties of data collection accurately, as compared to the MAP methods.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0094-2405
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1097
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:articleTitle
Compensation for attenuation, scatter, and detector response in SPECT reconstruction via iterative FBP methods.
pubmed:affiliation
Department of Radiology, State University of New York at Stony Brook 11794.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.