Patent ID: 7272208

Claim:
An x-ray imaging system using spatial modulation of an x-ray beam, said system including: an x-ray source transmitting said beam towards an object to be imaged, said x-ray source generating said beam so that said beam includes a plurality of x-ray intensities varying spatially and temporally and based on at least a beam intensity signal; an x-ray detector receiving said beam after an interaction between said beam and said object, said detector measuring a plurality of residual intensities of said beam and producing a residual image signal based on at least said residual intensities; a beam processor creating said beam intensity signal based on at least one of a previous beam intensity signal, said residual intensities, a region of interest in said object, and anticipated object motion; and an image processor producing an output image signal, said output image signal based on one or more of said residual image signal and said beam intensity signal.