The cingulate sulcus sign has been proposed as being useful as an MRI feature of idiopathic normal pressure hydrocephalus (NPH). It denotes the posterior part of the cingulate sulcus being narrower than the anterior part. The divider between the anterior and posterior parts of the sulcus being a line drawn parallel to the floor of the 4th ventricle 1.
- 1. Adachi M, Kawanami T, Ohshima F et-al. Upper midbrain profile sign and cingulate sulcus sign: MRI findings on sagittal images in idiopathic normal-pressure hydrocephalus, Alzheimer's disease, and progressive supranuclear palsy. Radiat Med. 2006;24 (8): 568-72. doi:10.1007/s11604-006-0074-6 - Pubmed citation