18F-NaF positron emission tomography–computed tomography (PET-CT) in abdominal aortic aneurysm disease. 18F-NaF positron emission tomography–computed tomography (PET-CT) in abdominal aortic aneurysm disease. This technique is currently being investigated in the SoFIA3 study (Sodium Fluoride Imaging (18F-NaF PET-CT) in Abdominal Aortic Aneurysms—NCT02229006). Rachael O Forsythe et al. Heart 2016;102:817-824 Copyright © BMJ Publishing Group Ltd & British Cardiovascular Society. All rights reserved.