A method for generating a two-dimensional image of an object using a computerised tomography (CT) scanner includes selecting 502 an imaging surface for the object, the imaging surface including a plurality of pixels, selecting a viewing direction that is non-parallel to the imaging surface, rotating an x-ray source of the CT scanner around the object through a plurality of views, wherein the x-ray source projects x-rays towards a detector array opposite the x-ray source. For each pixel of the plurality of pixels, the method includes acquiring using the detector array, from the plurality of views, data values for x-rays that pass through the pixel and are within a pre-determined angle from parallel to the viewing direction, and combining 510 the data values acquired for the pixel to calculate a final value for the pixel. The method further includes generating 512 the two-dimensional image of the object based on the calculated final values for each pixel.
