Fig. 8
From: Detector-based spectral CT with a novel dual-layer technology: principles and applications
Urinary calculus composition. (a) Coronal 120-kVp routine diagnostic image in a patient with acute abdominal pain shows a 7-mm calculus in the inferior pole of the right kidney (arrow). (b) Effective atomic number-based reconstruction at the same level shows that the calculus has high atomic number (arrow) consistent with a calcium calculus. (c) Uric acid image shows no focal abnormality in the area corresponding to calculus (arrow), indicating that the calculus does not have uric acid