Head and Neck Imaging
Identification of Urinary Stone Composition with Dual-energy Acquisition of Dual-source CT in Vivo
Author：CHEN Quan Hua, LI Jun-qiang
affiliation：Deparment of Radiology, the Eighth Affiliated Hospital of Guangxi Medical University, Guigang 537100, Guangxi Province, China
PDFAbstract
Objective To investigate the clinical value of the determination of renal stone composition in vivo with dual-source dual-energy computed tomography(DSDECT). Methods 406 cases with 406 renal stones were collected. All cases were scanned with dual-energy acquisition by dual-source CT. The data were sent to the workstation for the analysis of the stone composition. The urinary stones were analyzed by infrared spectroscopy after surgery. These two results were compared and the infrared spectroscopy result was taken as the reference standard. Results The accuracy of DSDECT for detecting the presence of four types of composition, uric acid, cysteine, hydroxyapatite, calcium oxalate and mixed stones, was 96.7%, 99.5%, 98.5%, 95.1% and 89.9% respectively. All cystine stones were with false positive results. Conclusion DSDECT could accurately predict the major component of urinary calculi and detect uric acid, cysteine, and calcium oxalate with a satisfactory accuracy.
【Keyword】Dual-source CT;Dual-energy; Urinary Stone; Chemical Composition
【Chart number】R692.4；R445.3
【Document Identification Number】A
【DOI】10.3969/j.issn.1672-5131.2018.07.040
Chinese journal of CT and MRI
th16Volume， th 7 Issue
2018Year07Month
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