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A method for including redundant data in computed tomography
Author(s) -
Silver Michael D.
Publication year - 2000
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 - 10.1118/1.598939
Subject(s) - computed tomography , cone beam computed tomography , data set , range (aeronautics) , tomography , beam (structure) , physics , mathematics , optics , computer science , artificial intelligence , engineering , medicine , radiology , aerospace engineering
A method for including redundant data in fan‐beam computed tomography (CT) is presented. It is a natural extension of the Parker [Med. Phys. 9 , 254–257 (1982)] short‐scan approach applied to divergent fan‐beam (or cone‐beam) data when the data set covers between the minimally complete set of 180° plus fan angle and 360°. A virtual fan angle is introduced whose value is the difference between the angular range of the data collected and 180°. Parker‐weights are then applied as if the field‐of‐view is spanned by the virtual fan angle.