Abstract

Low-dose unenhanced computed tomography (CT) is usually the modality of choice when evaluating for the presence of nephrolithiasis. Although CT can provide information regarding the size of a stone, its location, and potential complications such as hydronephrosis, there is no way to evaluate the composition of the stone. This retrospective study from Germany evaluated the use of a low-dose dual-energy CT protocol combined with commercially available software to distinguish the composition of various stones (uric acid, calcium, struvite, or cysteine).

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