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Case Reports in Radiology
Volume 2015 (2015), Article ID 801021, 5 pages
Case Report

The Clinical Impact of Accurate Cystine Calculi Characterization Using Dual-Energy Computed Tomography

1Mayo Clinic, Jacksonville, FL 32224, USA
2University of Michigan, Ann Arbor, MI 48109, USA
3Mayo Clinic, Rochester, MN 55905, USA
4New York Harbor VA Healthcare System, Brooklyn, NY 11209, USA

Received 27 July 2015; Revised 20 October 2015; Accepted 20 October 2015

Academic Editor: Stefania Rizzo

Copyright © 2015 William E. Haley et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Dual-energy computed tomography (DECT) has recently been suggested as the imaging modality of choice for kidney stones due to its ability to provide information on stone composition. Standard postprocessing of the dual-energy images accurately identifies uric acid stones, but not other types. Cystine stones can be identified from DECT images when analyzed with advanced postprocessing. This case report describes clinical implications of accurate diagnosis of cystine stones using DECT.