Fig. 2.

A) Mean water equivalent depths (WED) for all computed tomography (CT) data sets (blue) and corresponding synthetic CT (sCT) (red), and B) mean WED difference (light blue) and the corresponding standard deviation (sd) (dark blue) for 44 paired data sets as a function of degree, presented for three regions; Th1-C7 (left), mid mandible (middle) and mid nose (right). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)