Evidence map›Paper›PMID 24570097›Full record

ArticleEuropean journal of nuclear medicine and molecular imaging2014

A prospective clinical study of ¹⁸F-FAZA PET-CT hypoxia imaging in head and neck squamous cell carcinoma before and during radiation therapy.

Stéphanie Servagi-Vernat, Sarah Differding, Francois-Xavier Hanin, Daniel Labar, Anne Bol, John A Lee, Vincent Grégoire

Abstract readEvaluation Study
PubMed Publisher
In one paragraph

Article in European journal of nuclear medicine and molecular imaging, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
5.8field-weighted citation impact, top 3% 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

37 citing papers in PubMed, 96 citations in OpenAlex.

  1. Prospective Evaluation of a Tumor Control Probability Model Based on DynamicJournal of nuclear medicine : official publication, Society of Nuclear Medicine · 2019
    Trial
  2. Evaluation of tumour hypoxia during radiotherapy using [European journal of nuclear medicine and molecular imaging · 2016
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  7. Hypoxia-specific imaging in patients with lymphoma undergoing CAR-T therapy.European journal of nuclear medicine and molecular imaging · 2023
    Article
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  16. Article
  17. Oxygen-Guided Radiation Therapy.International journal of radiation oncology, biology, physics · 2019
    Article
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  19. Review
  20. Review
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

7 authors at 1 institution in 1 country.

Stéphanie Servagi-VernatDepartment of Radiation Oncology and Center of Molecular Imaging, Radiotherapy and Oncology (MIRO), Institut de Recherche Clinique (IREC), Université catholique de Louvain, St-Luc University Hospital, Brussels, Belgium, stephanie.servagi@gmail.com.
Sarah Differding
Francois-Xavier Hanin
Daniel Labar
Anne Bol
John A Lee
Vincent Grégoire
UCLouvain · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeHypoxia in head and neck squamous cell carcinoma (HNSCC) is associated with poor prognosis and outcome. (18) F-Fluoroazomycin arabinoside (FAZA) is a positron emission tomography (PET) tracer developed to enable identification of hypoxic regions within tumor. The aim of this study was to evaluate the use of (18) F-FAZA-PET for assessment of hypoxia before and during radiation therapy.

methodsTwelve patients with locally advanced HNSCC underwent (18) F-FAZA-PET scans before and at fraction 7 and 17 of concomitant chemo-radiotherapy. A hypoxic voxel was defined as a voxel expressing a standardized uptake value (SUV) equal or above the SUVmean of the posterior contralateral neck muscles plus three standard deviations. The fractional hypoxic volume fraction (FHV) and the spatial move of hypoxic volumes during treatment were analyzed.

resultsA hypoxic volume could be identified in ten patients before treatment. FAZA-PET FHV varied from 0 to 54.3% and from 0 to 41.4% in the primary tumor and in the involved node, respectively. Six out of these ten patients completed all the FAZA-PET-computed tomography (CT) during the radiotherapy. In all patients, FHV and SUVmax values decreased. All patient presented a spatial move of hypoxic volume, but only three patients had newborn hypoxic voxels after 17 fractions.

conclusionThis study indicated that (18) F-FAZA-PET could be used to identify and quantify tumor hypoxia before and during concomitant radio-chemotherapy in patients with locally advanced HNSCC. In addition to the information on prognostic value, the use of (18) F-FAZA-PET allowed the delineation of hypoxic volumes for dose escalation protocols. However, due to fluctuation of hypoxia during treatment, repeated scan will have to be performed (i.e. adaptive radiotherapy).

Indexed as

NitroimidazolesPositron-Emission TomographyRadiopharmaceuticalsAgedCarcinoma, Squamous CellCell HypoxiaFemaleHead and Neck NeoplasmsHumansMaleMiddle AgedOxygenProspective Studiesfluoroazomycin arabinosideNitroimidazolesOxygenRadiopharmaceuticals

Identifiers

PMID24570097
OpenAlexW2022679476

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.