ArticleInternational braz j urol : official journal of the Brazilian Society of Urology
Computed tomography window affects kidney stones measurements.
Article in International braz j urol : official journal of the Brazilian Society of Urology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed.
- Play it safe: renal function after bilateral flexible ureteroscopy for kidney stones.World journal of urology · 2024Article
- Accurate prediction of pure uric acid urinary stones in clinical context via a combination of radiomics and machine learning.World journal of urology · 2024Article
- Longitudinal follow-up of incidental renal calculi on computed tomography.Abdominal radiology (New York) · 2024Article
- Clinical Reproducibility of the Stone Volume Measurement: A "Kidney Stone Calculator" Study.Journal of clinical medicine · 2023Article
- The combination of mean and maximum Hounsfield Unit allows more accurate prediction of uric acid stones.Urolithiasis · 2022Article
- Influence of a Deep Learning Noise Reduction on the CT Values, Image Noise and Characterization of Kidney and Ureter Stones.Diagnostics (Basel, Switzerland) · 2022Article
- The effects of stone density on surgical outcomes of retrograde intrarenal stone surgery.The British journal of radiology · 2022Article
- A deep learning system for automated kidney stone detection and volumetric segmentation on noncontrast CT scans.Medical physics · 2022Article
- Variables measured on three-dimensional computed tomography are preferred for predicting the outcomes of shock wave lithotripsy.World journal of urology · 2022Article
- Evaluation of a free 3D software for kidney stones' surgical planning: "kidney stone calculator" a pilot study.World journal of urology · 2021Observational
- High-risk patients for septic shock after percutaneous nephrolithotomy.International braz j urol : official journal of the Brazilian Society of UrologyArticle
- Does previous standard percutaneous nephrolithotomy impair retrograde intrarenal surgery outcomes?International braz j urol : official journal of the Brazilian Society of UrologyArticle
- Long-term Follow-up of Patients Undergoing Nephrectomy for Urolithiasis.International braz j urol : official journal of the Brazilian Society of UrologyArticle
- Deep learning is a promising technology and seems to be the future of the CT stone evaluation.International braz j urol : official journal of the Brazilian Society of UrologyArticle
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10 authors.
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Abstract
objectivesMeasurements of stone features may vary according to the non-contrast computed tomography (NCCT) technique. Using magnified bone window is the most accurate method to measure urinary stones. Possible differences between stone measurements in different NCCT windows have not been evaluated in stones located in the kidney. The aim of this study is to compare measurements of kidney stone features between NCCT bone and soft tissue windows in patients submitted to retrograde intrarenal surgery (RIRS). MATERIALS AND
methodsPreoperative and 90th postoperative day NCCT were performed in 92 consecutive symptomatic adult patients (115 renal units) with kidney stones between 5 mm to 20 mm (< 15 mm in the lower calyx) treated by RIRS. NCCT were evaluated in the magnified bone window and soft tissue window in three axes in a different time by a single radiologist blinded for the measurements of the NCCT other method.
resultsStone largest size (7.92±3.81 vs. 9.13±4.08; mm), volume (435.5±472.7 vs. 683.1±665.0; mm3) and density (989.4±330.2 vs. 893.0±324.6; HU) differed between bone and soft-tissue windows, respectively (p<0.0001) 5.2% of the renal units (6/115) were reclassified from residual fragments > 2 mm on soft tissue window to 0-2 mm on bone window.
conclusionKidney stone measurements vary according to NCCT window. Measurements in soft tissue window NCCT of stone diameter and volume are larger and stone density is lesser than in bone window. These differences may have impact on clinical decisions.
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