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Correction for spectral artifacts in cross‐sectional reconstruction from x rays
Author(s) -
McDavid William D.,
Waggener Robert G.,
Payne William H.,
Dennis Michael J.
Publication year - 1977
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.594302
Subject(s) - artifact (error) , convolution (computer science) , iterative reconstruction , computer science , artificial intelligence , artificial neural network
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.