Fig. 1.

(a) Axial image of the bar pattern. (b) The zoomed-in image of the rectangular region in (a) for the three RFX1 kVCT acquisitions and three CT simulator reconstructions. Display window is the same for all the bar pattern images. (c) The MTF. (d) Axial image of the HU module that consists reconstructed slanted wire (blue rectangular region) for SSP measurement. (e) and (f) SSP for RFX1 kVCT and CT simulator averaged over five consecutive slices. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)