Detection and characterization of urinary stones using material-specific images derived from contrast-enhanced dual-energy CT urography.

ABSTRACT:

Objective

To determine the accuracy of material-specific images derived from contrast-enhanced dual-energy CT urography (DECTU) in detecting and measuring urinary stones in comparison with that of unenhanced images and its utility in calcified stone differentiation.

Methods

105 patients with 202 urinary stones (121 had confirmed composition by infrared spectroscopy) underwent triphasic (unenhanced, portal venous (VP) and excretory phase (EP)) DECTU. Material-specific images were derived in VP and EP with calcium-water, calcium-iodine and CaOxalate_Dihydrate (COD)-Hydroxyapatite (HAP) as basis material pairs. Stone number and size were recorded on unenhanced images and VP and EP material-specific images, where stone densities were also measured. Material densities of calcifie

SUBMITTER: Cheng Y 

PROVIDER: S-EPMC10646646 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature