A new method for predicting uric acid composition in urinary stones using routine single-energy CT.

"Conflict of interest The study was supported by the Örebro County Council, Sweden. A patent application has been submitted to the Swedish Patent and Registration Office by the author concerning the method that is described in the article for predicting uric acid stone composition."

"Many thanks to C. Feuk and M. Gustafsson for data acquisition and to P. Thunberg, J. Ulin and P. Rask for critical revision of the manuscript. Funding was provided by Universitets-sjukhuset Örebro (Grant Number: OLL-523931). Compliance with ethical standards: Ethical approvalThis retrospective study was performed in accordance with the ethical standards of the Regional Research Committee and with the 1964 Helsinki declaration and its later amendments. The Regional Research Ethics Board approved the study protocol and waived the informed consent requirement.: Conflict of interestThe study was supported by the Örebro County Council, Sweden. A patent application has been submitted to the Swedish Patent and Registration Office by the author concerning the method that is described in the article for predicting uric acid stone composition."