====== Invisible cortex sign ====== The '[[invisible cortex sign]]' is a highly accurate method of identifying the inferolateral [[central sulcus]] on a single axial [[DWI]] slice without relying on the more superior aspects of the sulcus ((Su S, Yang N, Gaillard F. Invisible cortex sign: A highly accurate feature to localize the inferolateral central sulcus. J Med Imaging Radiat Oncol. 2019 Aug;63(4):439-445. doi: 10.1111/1754-9485.12875. Epub 2019 Mar 15. PubMed PMID: 30874376.)).