Fig. 2.

A qualitative example of large anatomical differences between CBCT and sCT generated by Dual-UNet in transversal, sagittal and coronal view. Purple line is rectum contour, blue line is bladder contour and orange line is bone contour. This example shows a smaller bladder size of the sCT generated by Dual-UNet than the bladder size of CBCT, which was 268 cm³ compared to 125 cm³ respectively. The window width and window level of the shown CT images are 350 and 40 HU. The window width and window level of the shown CBCT images are 350 and −230 HU. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)