an apparatus for generating a panoramic image of part of a target , the apparatus including a source of penetrating radiation and a detector aligned with the source of penetrating radiation . the detector and source of penetrating radiation are rotate - able together with respect to the target . the detector has an array of radiation sensors arranged in rows and columns and is configured to output contents of each radiation sensor in the array of radiation sensors . the apparatus also includes a computer connected to the detector and configured to generate a panoramic image by combining data from sensors in the same row in different columns in different readout intervals , corresponding to different positions of the detector as it rotates with respect to the target . the combined outputs are selected to represent rays of radiation passing through a point on a defined curve . the computer is further configured to alter the defined curve and generate a second panoramic image using the altered curve and combing data from the sensor a second time .