Fig. 3
From: MRI anatomy of the rectum: key concepts important for rectal cancer staging and treatment planning
Sagittal and axial T2-weighted images of a normal rectum of a male individual (without rectal cancer) demonstrating the sigmoid take-off (STO, indicated by the *) as the point from which the sigmoid sweeps horizontally on a sagittal view (a) and ventrally on an axial view (b), away from the sacrum. The white dashed line on the sagittal view indicates the anorectal junction (ARJ) that is typically situated at the level of an imaginary line between the lower margin of the sacral and pubic bone