Half-scan cone-beam CT fluoroscopy with multiple x-ray sources.
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.
Liu
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Info & Images, Iowa City, Iowa 52246, USA. yliu@inav.net
Liu
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Wang
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Wang
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D000465:Algorithms; D003198:Computer Simulation; D005471:Fluoroscopy / Q000379:methods*; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation; D015233:Models, Statistical; D008962:Models, Theoretical; D019047:Phantoms, Imaging; D014057:Tomography, X-Ray Computed / Q000295:instrumentation* / Q000379:methods*; D014965:X-Rays