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X‐ray micro‐CT with a displaced detector array: Application to helical cone‐beam reconstruction
Author(s) -
Liu Vinson,
Lariviere Nicholas R.,
Wang Ge
Publication year - 2003
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 - 10.1118/1.1609058
Subject(s) - detector , optics , iterative reconstruction , spiral (railway) , weighting , beam (structure) , cone beam computed tomography , helical scan , physics , cone beam ct , x ray detector , cone (formal languages) , flat panel detector , computer science , computed tomography , engineering , computer vision , acoustics , radiology , medicine , algorithm , mechanical engineering , magnetic tape , tape recorder
In x‐ray micro‐CT applications, it is useful to increase the field of view by offsetting a two‐dimensional (2D) detector array. In this technical note, we briefly review the methods for image reconstruction with an asymmetric 2D detector array, elaborate on the use of an associated weighting scheme in the case of helical/spiral cone‐beam scanning, and perform a series of numerical tests to demonstrate helical cone‐beam image reconstruction with such an arrangement.