Evidence map›Paper›PMID 25666379›Full record

Observational studyEuropean radiology2015

Renal blood flow using arterial spin labelling MRI and calculated filtration fraction in healthy adult kidney donors Pre-nephrectomy and post-nephrectomy.

Marica Cutajar, Rachel Hilton, Jonathon Olsburgh, Stephen D Marks, David L Thomas, Tina Banks, Christopher A Clark, Isky Gordon

Abstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in European radiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% of its field
1 · What the graph read from it

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Arterial spin labelling MRI to measure renal perfusion: a systematic review and statement paper.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2018
    Pooled it
  2. Review
  3. Review
  4. Article
  5. Evaluation of Early Renal Changes in Type 2 Diabetes Mellitus Using Multiparametric MR Imaging.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2025
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Noninvasive measurement of renal blood flow by magnetic resonance imaging in rats.American journal of physiology. Renal physiology · 2018
    Article
  13. Article
  14. Article
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

Marica CutajarImaging and Biophysics Unit, Institute of Child Health, University College London, 30 Guilford Street, London, WC1N1EH, UK.
Rachel Hilton
Jonathon Olsburgh
Stephen D Marks
David L Thomas
Tina Banks
Christopher A Clark
Isky Gordon
Great Ormond Street Hospital for Children NHS Foundation Trust · GBGuy's and St Thomas' NHS Foundation Trust · GBUCL Australia · AUUniversity College London · GB

Funding

Medical Research Council G1002276
6 · The paper itself

Abstract

objectivesRenal plasma flow (RPF) (derived from renal blood flow, RBF) and glomerular filtration rate (GFR) allow the determination of the filtration fraction (FF), which may have a role as a non-invasive renal biomarker. This is a hypothesis-generating pilot study assessing the effect of nephrectomy on renal function in healthy kidney donors.

methodsEight living kidney donors underwent arterial spin labelling (ASL) magnetic resonance imaging (MRI) and GFR measurement prior to and 1 year after nephrectomy. Chromium-51 labelled ethylenediamine tetraacetic acid ((51)Cr-EDTA) with multi-blood sampling was undertaken and GFR calculated. The RBF and GFR obtained were used to calculate FF.

resultsAll donors showed an increase in single kidney GFR of 24 - 75 %, and all but two showed an increase in FF (-7 to +52 %) after nephrectomy. The increase in RBF, and hence RPF, post-nephrectomy was not as great as the increase in GFR in seven out of eight donors. As with any pilot study, the small number of donors and their relatively narrow age range are potential limiting factors.

conclusionsThe ability to measure RBF, and hence RPF, non-invasively, coupled with GFR measurement, allows calculation of FF, a biomarker that might provide a sensitive indicator of loss of renal reserve in potential donors. KEY POINTS: • Non-invasive MRI measured renal blood flow and calculated renal plasma flow. • Effect of nephrectomy on blood flow and filtration in donors is presented. • Calculated filtration fraction may be a useful new kidney biomarker.

Indexed as

Living DonorsAdultBiomarkersCalcium Chelating AgentsEdetic AcidFemaleGlomerular Filtration RateHumansKidneyMagnetic Resonance ImagingMiddle AgedNephrectomyPilot ProjectsPostoperative CarePreoperative CareRenal ArteryBiomarkersCalcium Chelating AgentsEdetic AcidSpin Labels

Identifiers

PMID25666379
OpenAlexW2028990184

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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 OpenQuestion graph.