X-ray computerised tomography (CT) imaging method and system

摘要

An object of the present invention is to utilize a distance, which is linearly moved for acceleration or deceleration, out of an overall distance linearly moved during a helical scan for the purpose of image reconstruction. Projection data is acquired even during acceleration or deceleration of linear movement made for a helical scan (A1-A12). The acquired projection data is utilized for image reconstruction. Moreover, during the acceleration of linear movement, while a tube current is being increased (A4), projection data is acquired (A5). During the deceleration of linear movement, while the tube current is being decreased (A9), projection data is acquired (A10).