Evidence map›Paper›PMID 23354032›Full record

ArticleClinical nuclear medicine2013

Variance of SUVs for FDG-PET/CT is greater in clinical practice than under ideal study settings.

Virendra Kumar, Kavindra Nath, Claudia G Berman, Jongphil Kim, Tawee Tanvetyanon, Alberto A Chiappori, Robert A Gatenby, Robert J Gillies, Edward A Eikman

Abstract read
In one paragraph

Article in Clinical nuclear medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

50 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Repeatability of quantitativeEuropean journal of nuclear medicine and molecular imaging · 2018
    Pooled it
  2. QuantitativeRadiology · 2024
    Trial
  3. Repeatability of 18F-FDG PET/CT in Advanced Non-Small Cell Lung Cancer: Prospective Assessment in 2 Multicenter Trials.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2015
    Trial
  4. Article
  5. Visual and QuantitativeMolecular imaging and biology · 2025
    Article
  6. Article
  7. Precision of quantitative parameters ofQuantitative imaging in medicine and surgery · 2023
    Article
  8. Article
  9. Frontiers in oncology · 2023
    Article
  10. Value-assessment of computer-assisted navigation strategies during percutaneous needle placement.International journal of computer assisted radiology and surgery · 2022
    Article
  11. Article
  12. Article
  13. Article
  14. Influences on PET Quantification and Interpretation.Diagnostics (Basel, Switzerland) · 2022
    Review
  15. Article
  16. Article
  17. Prevalence of incidental thyroid malignancy on routineEuropean journal of hybrid imaging · 2020
    Article
  18. Radiomics ofEuropean journal of nuclear medicine and molecular imaging · 2020
    Article
  19. Article
  20. 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

9 authors.

Virendra KumarDepartment of Imaging, H Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612-9416, USA.
Kavindra Nath
Claudia G Berman
Jongphil Kim
Tawee Tanvetyanon
Alberto A Chiappori
Robert A Gatenby
Robert J Gillies
Edward A Eikman

Funding

The Physi(ologi)cal Microenvironment and its Role in Tumor Invasion and MetastaseU54CA143970 · NCI · H. LEE MOFFITT CANCER CTR & RES INST · PI GATENBY, ROBERT A · 2009 to 2014
$9.3M
Causes & Consequences of Acid pH in TumorsR01CA077575 · NCI · UNIVERSITY OF ARIZONA · PI GILLIES, ROBERT J. · 1999 to 2018
$8.5M
Radiomics of NSCLCU01CA143062 · NCI · H. LEE MOFFITT CANCER CTR & RES INST · PI GILLIES, ROBERT J., SCHABATH, MATTHEW B. · 2010 to 2020
$5.7M
Imaging Biomarkers for Response to Anti-Cancer TherapyR01CA125627 · NCI · H. LEE MOFFITT CANCER CTR & RES INST · PI BAKER, AMANDA F, GILLIES, ROBERT J. · 2008 to 2012
$1.7M
NCI NIH HHS R01 CA077575NCI NIH HHS R01 CA125627NCI NIH HHS U01 CA143062NCI NIH HHS U54 CA143970
6 · The paper itself

Abstract

purposeMeasurement variance affects the clinical effectiveness of PET-based measurement as a semiquantitative imaging biomarker for cancer response in individual patients and for planning clinical trials. In this study, we measured test-retest reproducibility of SUV measurements under clinical practice conditions and recorded recognized deviations from protocol compliance.

methodsInstrument performance calibration, display, and analyses conformed to manufacture recommendations. Baseline clinical (18)F-FDG PET/CT examinations were performed and then repeated at 1 to 7 days. Intended scan initiation uptake period was to repeat the examinations at the same time for each study after injection of 12 mCi FDG tracer. Avidity of uptake was measured in 62 tumors in 21 patients as SUV for maximum voxel (SUV(max)) and for a mean of sampled tumor voxels (SUV(mean)).

resultsThe range of SUV(max) and SUV(mean) was 1.07 to 21.47 and 0.91 to 14.69, respectively. Intraclass correlation coefficient between log of SUV(max) and log of SUV(mean) was 0.93 (95% confidence interval [CI], 0.88-0.95) and 0.92 (95% CI, 0.87-0.95), respectively.Correlation analysis failed to show an effect on uptake period variation on SUV measurements between the 2 examinations, suggesting additional sources of noise.The threshold criteria for relative difference from baseline for the 95% CI were ± 49% or ± 44% for SUV(max) or SUV(mean), respectively.

conclusionsVariance of SUV for FDG-PET/CT in current clinical practice in a single institution was greater than expected when compared with benchmarks reported under stringent efficacy study settings. Under comparable clinical practice conditions, interpretation of changes in tumor avidity in individuals and assumptions in planning clinical trials may be affected.

Indexed as

Positron-Emission TomographyTomography, X-Ray ComputedAdultAgedAnalysis of VarianceBiological TransportFemaleFluorodeoxyglucose F18Guideline AdherenceHumansImage Interpretation, Computer-AssistedMaleMiddle AgedMulticenter Studies as TopicMultimodal ImagingNeoplasmsFluorodeoxyglucose F18

Identifiers

PMID23354032
PMCPMC3578161

What OpenQuestion holds

Textmetadata
LicenceTDM
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.