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Half‐scan cone‐beam CT fluoroscopy with multiple x‐ray sources
Author(s) -
Liu Ying,
Liu Hong,
Wang Ying,
Wang Ge
Publication year - 2001
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 - 10.1118/1.1381549
Subject(s) - fluoroscopy , imaging phantom , cone beam computed tomography , beam (structure) , weighting , optics , iterative reconstruction , physics , x ray , computed tomography , nuclear medicine , computer science , computer vision , medicine , radiology , nuclear physics , acoustics
To develop volumetric micro‐CT fluoroscopy for small animal imaging, we have proposed a cone‐beam system with multiple x‐ray sources. In this paper, we extend Parker's single‐source half‐scan weighting scheme to the case of an odd number of x‐ray sources that are equiangularly distributed, and apply it for half‐scan Feldkamp‐type reconstruction in this unique geometry. In the numerical simulation with the Shepp–Logan phantom, representative images indicate that the proposed half‐scan Feldkamp‐type algorithm produces temporal resolution significantly superior to that with a single x‐ray source cone‐beam system.