ArticleWorld journal of urology2021
Revolution spectral CT for urinary stone with a single/mixed composition in vivo: a large sample analysis.
Article in World journal of urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 10 citations in OpenAlex.
- Differential clinical characteristics of Chinese children with primary hyperoxaluria type 3.Pediatric nephrology (Berlin, Germany) · 2026Article
- Value of dual-energy CT parameters DER and DEI in predicting calcium-containing urinary stones and differentiating pure calcium oxalate monohydrate.American journal of translational research · 2026Article
- The Composition Analysis of Renal Staghorn Calculi and their Characteristics using Spectral CTCurrent medical imaging · 2025Article
- The characterization of in vivo urinary phospate stones by spectral CT.Urolithiasis · 2022Article
- The combination of mean and maximum Hounsfield Unit allows more accurate prediction of uric acid stones.Urolithiasis · 2022Article
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6 authors at 2 institutions in 1 country.
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Abstract
purposeTo analyze various compositions of urinary stones using revolution spectral CT (rapid kV switching dual-energy CT) in vivo.
methods202 patients with urinary stones underwent spectral CT before surgery. Zeff peak, overall scope and CT values were detected. Moreover, water/iodine attenuating material images were obtained. Removed stones were subjected to infrared spectroscopy after surgery. The results of infrared spectroscopy were compared with CT.
results28 stones (14.08%) with single composition, 165 stones with two mixed compositions (81.68%), and 9 stones with three mixed compositions (4.46%) were observed. When Zeff peaks of stones with single/mixed compositions were summarized together, 146 peaks of calcium oxalate monohydrate, 119 peaks of calcium oxalate dihydrate, 55 peaks of carbapatite, 38 peaks of urate, 16 peaks of struvite, and 11 peaks of brushite were totally observed. 93.8% of calcium oxalate monohydrate had Zeff peaks between 13.3 and 14.0. 91.6% of calcium oxalate dihydrate had peaks between 12.0 and 13.3. For carbapatite, 90.9% of stones had peaks from 14.0 to 15.0. A total of 94.8% of urate had peaks between 7.0 and 11.0. 93.8% of struvite had peaks between 11.0 and 13.0, and 90.9% of brushite had peaks between 12.0 and 14.0. Moreover, densities of urate, struvite and brushite were low density in iodine-based images and high-density in water-based images.
conclusionThe in-vivo analysis of spectral CT in urinary stone revealed characteristics of different compositions, especially mixed compositions. An in-vivo predictive model may be constructed to distinguish stone compositions.
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