Patent ID: 7535988

Claim:
A method for fast data acquisition for image reconstruction using computerized tomography comprising: arranging on an image-confining contour a probing radiation source that emits a fan beam and a set of real detectors, said image-confining contour being immediately outside of a boundary or perimeter of a subject image, said set of real detectors being neither equally spaced on a straight line nor situated equi-angularly on a curve; collecting amplitude scaled signals of said set of real detectors, said scaled signals comprising a real projection data set associated with said set of real detectors; mapping said real projection data set onto an imaginary contour resulting in an imaginary projection data set, wherein said imaginary contour has been selected so that the geometry is a known configuration for image reconstruction by known fan beam projection image reconstructions algorithms; performing an interpolation of the imaginary projection data set to obtain an interpolated imaginary detector data set that corresponds to a set of imaginary detectors, said set of imaginary detectors being either equally spaced on a straight line or situated equi-angularly on a curve; and performing image reconstruction using known or fan beam image reconstruction algorithms on said interpolated imaginary detector data set; wherein said probing radiation source and said set of real detectors are arranged on said image-confining contour in a static manner such that said probing radiation source and said set of real detectors do not move in relation to the subject image during said step of collecting amplitude scaled signals of said set of real detectors.