Fig. 2.

A) The cervical cord in the sagittal plane showing a multiple sclerosis (MS) lesion (hypointense) at the C2 level in a case of secondary progressive MS (SPMS), B) axial slice through the level of the lesion at the C2 level, C) the cord contour identified using the AS method (contour shown in red) and D) the same axial slice through the MS lesion at C2 showing the cord contour identified using both the PropSeg (contour shown in cyan) and AS methods (contour shown in red) for comparison. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)