Deep Gray Nuclei (image) Radiological Society of North America Caption (a) Axial T2-weighted image shows deep gray nuclei (DGN) width, anteroposterior (AP) distance, and surface area. (b) Coronal T2- weighted image shows lateral ventricle atrial measures and transverse cerebellar diameter (TCD). Credit Radiological Society of North America Usage Restrictions May be used with credit Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.