Commentary

Abstract

The concept of dual energy CT was first introduced in clinical practice with the advent of dual source CT scans. Although the concept was exciting and had a number of potential clinical applications, the equipment involved was expensive to acquire and run. The recent advent of dual energy protocols in single source CT scans has revived interest in this area. The issue has been the mis registration between the dual energy acquisitions. Eiber et al have demonstrated that it is possible to reliably acquire dual energy scans in patients. The authors further demonstrate that dual energy protocols have a role in the characterization of urinary tract calculi.