Bryan Sang Yi MD,MPH, Presenter: Nothing to Disclose

Wendy L. Stiles MD, Abstract Co-Author: Nothing to Disclose

Alvin C. Silva MD, Abstract Co-Author: Nothing to Disclose

Amy Kiyo Hara MD, Abstract Co-Author: License agreement, General Electric Company Researcher, General Electric Company

Robert Gene Paden, Abstract Co-Author: Nothing to Disclose

Thomas Frederick Boltz MS, Abstract Co-Author: Nothing to Disclose

William Pavlicek PhD, Abstract Co-Author: Nothing to Disclose

• Review DECT technique & discuss clinically specific renal protocols • Apply various DECT imaging displays and advance post-processing techniques to evaluate renal pathology  

Imaging review of DECT protocols used to characterize different renal lesions: simple and complex cysts, angiomyolipoma, renal cell carcinomas (cystic and solid), metastases, and focal mass-like inflammation. On iodine images, iodine density can be directly quantified. A threshold value of 20 iodine density (100 ug/cc) has been applied to characterize renal lesions. Effective Z relates to elemental atomic number; thus, identifying materials such as iodine in an enhancing lesion, but also can be use to determine renal lesion complexity. Spectral HU curves for a renal lesion can be compared to internal controls (enhancing renal cortex, fluid filled structures), which exemplifies how matching a renal lesion’s curve configuration to either the curve for enhancing cortex or nonenhancing fluid increases confidence in diagnosis. Furthermore, iodine color overlay images improve performance, providing a quick qualitative assessment of a renal lesion; differences in hue between solid and cystic lesions allow differentiation.

DECT provides diverse, easily utilized series that aid in more accurate characterization of renal lesions, increasing confidence and performance.

Yi, B, Stiles, W, Silva, A, Hara, A, Paden, R, Boltz, T, Pavlicek, W, Update and Review of DECT Clinical Applications of the Kidney..  Radiological Society of North America 2013 Scientific Assembly and Annual Meeting, December 1 - December 6, 2013 ,Chicago IL. http://archive.rsna.org/2013/13011057.html