Patent ID: 8315351

Claim:
A computed-tomography apparatus, comprising: an x-ray source; an x-ray detector disposed to receive x-rays from said x-ray source; a unit to collect circle data and scanogram data; a processing unit for estimating line data from said circle data and said scanogram data and for performing reconstruction of an image using said circle data and said estimated line data, wherein said processing unit is configured to estimated said line data using: P L ⁡ ( u , v , h ) = v v + h ⁢ P C ⁡ ( u , v + h , λ 0 ) + h v + h ⁢ P S ⁡ ( u , v + h ) where P C (u, v, λ) is said circle data, P S (u, z) is said scanogram data, (u, v) are detector coordinates, h is an estimated line source position, z=v+h, λ is a view angle and λ 0 is a line angular position.