Evidence map›Paper›PMID 25899414›Full record

ArticleEuropean radiology2015

Quantification of tumour (18) F-FDG uptake: Normalise to blood glucose or scale to liver uptake?

Georgia Keramida, Sabina Dizdarevic, Janice Bush, A Michael Peters

Abstract read
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In one paragraph

Article in European radiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
3.5field-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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.

  1. Effect of blood glucose level on standardized uptake value (SUV) inEuropean journal of nuclear medicine and molecular imaging · 2019
    Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Exploratory Dual PET imaging of [Bioorganic & medicinal chemistry letters · 2024
    Article
  6. Article
  7. Article
  8. Intrapatient variability of 18F-FDG uptake in normal tissues.Journal of clinical imaging science · 2022
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Effect of various blood glucose levels on regional FDG uptake in the brain.Asia Oceania journal of nuclear medicine & biology · 2020
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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

4 authors at 3 institutions in 1 country.

Georgia KeramidaClinical Imaging Sciences Centre, Brighton and Sussex Medical School, Brighton, UK, G.Keramida@bsms.ac.uk.
Sabina Dizdarevic
Janice Bush
A Michael Peters
Brighton and Sussex Medical School · GBUniversity Hospitals Sussex NHS Foundation Trust · GBUniversity of Sussex · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo compare normalisation to blood glucose (BG) with scaling to hepatic uptake for quantification of tumour (18) F-FDG uptake using the brain as a surrogate for tumours.

methodsStandardised uptake value (SUV) was measured over the liver, cerebellum, basal ganglia, and frontal cortex in 304 patients undergoing (18) F-FDG PET/CT. The relationship between brain FDG clearance and SUV was theoretically defined.

resultsBrain SUV decreased exponentially with BG, with similar constants between cerebellum, basal ganglia, and frontal cortex (0.099-0.119 mmol/l(-1)) and similar to values for tumours estimated from the literature. Liver SUV, however, correlated positively with BG. Brain-to-liver SUV ratio therefore showed an inverse correlation with BG, well-fitted with a hyperbolic function (R = 0.83), as theoretically predicted. Brain SUV normalised to BG (nSUV) displayed a nonlinear correlation with BG (R = 0.55); however, as theoretically predicted, brain nSUV/liver SUV showed almost no correlation with BG. Correction of brain SUV using BG raised to an exponential power of 0.099 mmol/l(-1) also eliminated the correlation between brain SUV and BG.

conclusionBrain SUV continues to correlate with BG after normalisation to BG. Likewise, liver SUV is unsuitable as a reference for tumour FDG uptake. Brain SUV divided by liver SUV, however, shows minimal dependence on BG. KEY POINTS: • FDG standard uptake value in tumours helps clinicians assess response to treatment. • SUV is influenced by blood glucose; normalisation to blood glucose is recommended. • An alternative approach is to scale tumour SUV to liver SUV. • The brain used as a tumour surrogate shows that neither approach is valid. • Applying both approaches, however, appropriately corrects for blood glucose.

Indexed as

Blood GlucoseBrainFluorodeoxyglucose F18HumansLiverLiver NeoplasmsMultimodal ImagingPositron-Emission TomographyRadiopharmaceuticalsRetrospective StudiesTomography, X-Ray ComputedBlood GlucoseFluorodeoxyglucose F18Radiopharmaceuticals

Identifiers

PMID25899414
OpenAlexW1969849351

What OpenQuestion holds

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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.