ArticleRadiology1999
Renal volume measurements: accuracy and repeatability of US compared with that of MR imaging.
Article in Radiology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02911792 (Effect of Farxiga on Renal Function and Size in Type 2 Diabetic Patients With Hyperfiltration), which is not on this map. Cited by 87 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Effect of Farxiga on Renal Function and Size in Type 2 Diabetic Patients With Hyperfiltration
Who cites it
87 citing papers in PubMed, 249 citations in OpenAlex.
- Combined food and micronutrient supplements during pregnancy have limited impact on child blood pressure and kidney function in rural Bangladesh.The Journal of nutrition · 2013Trial
- Ultrasound-based renal growth curves in Chinese children aged 0-14 years.Pediatric investigation · 2026Article
- Sonographic Anatomy and Normal Measurements of the Human Kidneys: A Comprehensive Review.Diagnostics (Basel, Switzerland) · 2025Review
- Variability of Renal Ultrasound Measurements: How Physician Experience and Patient Position Affect Measurement Accuracy?Journal of clinical medicine · 2025Article
- Semiautomatic three-dimensional ultrasound renal volume segmentation in pediatric hydronephrosis: interrater agreement and correlation to conventional hydronephrosis grading.Pediatric radiology · 2025Article
- Ultrasound versus magnetic resonance imaging for calculating total kidney volume in patients with ADPKD: a real-world data analysis.The ultrasound journal · 2025Article
- MRI of kidney size matters.Magma (New York, N.Y.) · 2024Review
- Kidney volume normative values in Central European children aged 0-19 years: a multicenter study.Pediatric nephrology (Berlin, Germany) · 2024Article
- Fully automated kidney image biomarker prediction in ultrasound scans using Fast-Unet+.Scientific reports · 2024Article
- Age- and Sex-Specific Reference Values for Renal Volume and Association with Risk Factors for Chronic Kidney Disease in a General Population-An MRI-Based Study.Journal of clinical medicine · 2024Article
- Trunk muscle quality and quantity are associated with renal volume in nondiabetic people.Clinical kidney journal · 2023Article
- The correlation between GFR and unit renal volume in infants with hydronephrosis measured by two imaging methods.Scientific reports · 2023Article
- Non-contrast low-dose CT can be used for volumetry of ADPKD.BMC nephrology · 2023Article
- Fetal growth restriction followed by very preterm birth is associated with smaller kidneys but preserved kidney function in adolescence.Pediatric nephrology (Berlin, Germany) · 2023Article
- Automatic measurement of kidney dimensions in two-dimensional ultrasonography is comparable to expert sonographers.Journal of medical imaging (Bellingham, Wash.) · 2023Article
- Kidney outcomes in early adolescence following perinatal asphyxia and hypothermia-treated hypoxic-ischaemic encephalopathy.Pediatric nephrology (Berlin, Germany) · 2023Article
- Sonographic Evaluation of the Morphology of Kidneys Among Apparently Healthy Children in Northwest Ethiopia, 2021: The Normal Limits and Percentile Curves.Canadian journal of kidney health and disease · 2023Article
- Editorial: There Is Still a Need for Kidney Volume Reference Intervals in Large Children, Adolescents, and Young Adults.Canadian journal of kidney health and disease · 2023Article
- Correlation of Sonographic Parameters with Renal Function in Patients with Newly Diagnosed Chronic Kidney Disease.Journal of ultrasonography · 2022Article
- A Systematic Review of Reported Outcomes in ADPKD Studies.Kidney international reports · 2022Article
27 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo determine the accuracy and repeatability of ultrasonography (US) with the ellipsoid formula in calculating the renal volume. MATERIALS AND
methodsThe renal volumes in 20 volunteers aged 19-51 years were determined by using US with the ellipsoid formula and magnetic resonance (MR) imaging with the voxel-count method by two independent observers for each modality. The observers performed all measurements twice, with an interval between the first and second examinations. The voxel-count method was the reference standard. Repeatability was evaluated by calculating the SD of the difference (method of Bland and Altman).
resultsRenal volume was underestimated with US by 45 mL (25%) on average. A comparable underestimation was found when the ellipsoid formula was applied to MR images. This indicates that the inaccuracy of US renal volume measurements (a) occurred because the kidney does not resemble an ellipsoid and (b) was not primarily related to the imaging modality. Intra- and interobserver variations in US volume measurements were poor; the SD of the difference was 21-32 mL. For comparison, the SD of the difference in reference-standard measurements was 5-10 mL.
conclusionUse of US with the ellipsoid formula is not appropriate for accurate and reproducible calculation of renal volume.
Indexed as
Identifiers
What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.