Abstract: An apparatus for processing image data of a computerized tomography system having image data acquisition and main storage devices is provided. The image processing apparatus includes an image processor memory for storing image data and a plurality of operation means having processing apparatus for sequentially performing processing operations on the image data. The apparatus further includes a process controller for providing the image processor memory and the operation means with control data specifying the processing operations to be sequentially performed by the plurality of operation means and for generating sequence selection data. The apparatus also includes a sequencer means for selecting the sequence in which the processing operations are to be performed in accordance with the sequence selection data.