Evidence map›Paper›PMID 18931838›Full record

ArticleEuropean journal of nuclear medicine and molecular imaging2009

Reproducibility of quantitative 18F-3'-deoxy-3'-fluorothymidine measurements using positron emission tomography.

Adrianus J de Langen, Bianca Klabbers, Mark Lubberink, Ronald Boellaard, Marieke D Spreeuwenberg, Ben J Slotman, Remco de Bree, Egbert F Smit, Otto S Hoekstra, Adriaan A Lammertsma

Abstract readEvaluation Study
PubMed Publisher
In one paragraph

Article in European journal of nuclear medicine and molecular imaging, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing 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

34 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. Trial
  3. Trial
  4. Trial
  5. Article
  6. Role of 3'-Deoxy-3'-[JTO clinical and research reports · 2022
    Article
  7. Dynamic whole-body PET imaging: principles, potentials and applications.European journal of nuclear medicine and molecular imaging · 2019
    Review
  8. Repeatability ofJournal of nuclear medicine : official publication, Society of Nuclear Medicine · 2017
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. FLT PET-CT in evaluation of treatment response.Indian journal of nuclear medicine : IJNM : the official journal of the Society of Nuclear Medicine, India · 2014
    Review
  15. Article
  16. Article
  17. Article
  18. Predicting tumour response.Cancer imaging : the official publication of the International Cancer Imaging Society · 2013
    Review
  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

10 authors.

Adrianus J de LangenDepartment of Respiratory Medicine, VU University Medical Centre, Amsterdam, The Netherlands.
Bianca Klabbers
Mark Lubberink
Ronald Boellaard
Marieke D Spreeuwenberg
Ben J Slotman
Remco de Bree
Egbert F Smit
Otto S Hoekstra
Adriaan A Lammertsma

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePositron emission tomography (PET) using (18)F-3'-deoxy-3'-fluorothymidine ([(18)F]FLT) allows noninvasive monitoring of tumour proliferation. For serial imaging in individual patients, good reproducibility is essential. The purpose of the present study was to evaluate the reproducibility of quantitative [(18)F]FLT measurements.

methodsNine patients with non-small-cell lung cancer (NSCLC) and six with head-and-neck cancer (HNC) underwent [(18)F]FLT PET twice within 7 days prior to therapy. The maximum pixel value (SUV(max)) and a threshold defined volume (SUV(41%)) were defined for all delineated lesions. The plasma to tumour transfer constant (K(i)) was estimated using both Patlak graphical analysis and nonlinear regression (NLR). NLR was also used to estimate k(3), which, at least in theory, selectively reflects thymidine kinase 1 activity. The level of agreement between test and retest values was assessed using the intraclass correlation coefficient (ICC) and Bland-Altman analysis.

resultsAll primary tumours and >90% of clinically suspected locoregional metastases could be delineated. In total, 24 lesions were defined. NLR-derived K(i), Patlak-derived K(i), SUV(41%) and SUV(max) showed excellent reproducibility with ICCs of 0.92, 0.95, 0.98 and 0.93, and SDs of 16%, 12%, 7% and 11%, respectively. Reproducibility was poor for k(3) with an ICC of 0.43 and SD of 38%.

conclusionQuantitative [(18)F]FLT measurements are reproducible in both NSCLC and HNC patients. When monitoring response in individual patients, changes of more than 15% in SUV(41%), 20-25% in SUV(max) and Patlak-derived K(i), and 32% in NLR3k-derived K(i) are likely to represent treatment effects.

Indexed as

DideoxynucleosidesFluorine RadioisotopesRadiopharmaceuticalsCarcinoma, Non-Small-Cell LungHead and Neck NeoplasmsHumansLung NeoplasmsLymphatic MetastasisPositron-Emission TomographyProspective StudiesReproducibility of ResultsalovudineDideoxynucleosidesFluorine RadioisotopesRadiopharmaceuticals

Identifiers

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.