Patent ID: 7099503

Claim:
An image reconstruction method for reconstructing an image of a specified image reconstruction plane based on data collected at different view angles while rotating at least one of an X-ray tube and a multi-row detector having first—J-th (J≧2) detector rows around a center of rotation, comprising the steps of: selecting a detector row which an X-ray passing through a pixel point g(x, y) enters based on a distance Δz from a scan center plane to an image reconstruction plane in a z-axis direction and a position (x, y) of the pixel point g in the image reconstruction plane; and using data of said detector row to determine a pixel value of said pixel point g, where the scan center plane at a certain view angle is defined as an x-y plane, and a direction normal to said x-y plane, i.e., a detector row direction, is defined as the z-axis direction.