LI-RADS v2018 Core Document
Anorectal Cancer-Anatomy and Screening RG 2015
Gastric Bypass: phi angle corresponding to the angle between the spinal column and the gastric band has a normal range between 4–58°

Gastric Banding Complications AJR 2006
Postoperative Stomach EJR 2005

Incidental Adrenal Lesion Washout Rad 2010
