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Erschienen in: European Journal of Nuclear Medicine and Molecular Imaging 4/2016

01.04.2016 | Original Article

Multimodal imaging based on MRI and PET reveals [18F]FLT PET as a specific and early indicator of treatment efficacy in a preclinical model of recurrent glioblastoma

verfasst von: Aurélien Corroyer-Dulmont, Elodie A. Pérès, Aurélie N. Gérault, Ariel Savina, Fanny Bouquet, Didier Divoux, Jérôme Toutain, Méziane Ibazizène, Eric T. MacKenzie, Louisa Barré, Myriam Bernaudin, Edwige Petit, Samuel Valable

Erschienen in: European Journal of Nuclear Medicine and Molecular Imaging | Ausgabe 4/2016

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Abstract

Purpose

The primary objective of this study was to compare the ability of PET and MRI biomarkers to predict treatment efficacy in a preclinical model of recurrent glioblastoma multiforme.

Methods

MRI (anatomical, diffusion, vasculature and oxygenation) and PET ([18F]FDG and [18F]FLT) parameters were obtained 3 days after the end of treatment and compared with late tumour growth and survival.

Results

Early after tumour recurrence, no effect of treatment with temozolomide combined with bevacizumab was observed on tumour volume as assessed by T2-W MRI. At later times, the treatment decreased tumour volume and increased survival. Interestingly, at the earlier time, temozolomide + bevacizumab decreased [18F]FLT uptake, cerebral blood volume and oedema. [18F]FLT uptake, oedema and cerebral blood volume were correlated with overall survival but [18F]FLT uptake had the highest specificity and sensitivity for the early prediction of treatment efficacy.

Conclusion

The present investigation in a preclinical model of glioblastoma recurrence underscores the importance of multimodal imaging in the assessment of oedema, tumour vascular status and cell proliferation. Finally, [18F]FLT holds the greatest promise for the early assessment of treatment efficacy. These findings may translate clinically in that individualized treatment for recurrent glioma could be prescribed for patients selected after PET/MRI examinations.
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Metadaten
Titel
Multimodal imaging based on MRI and PET reveals [18F]FLT PET as a specific and early indicator of treatment efficacy in a preclinical model of recurrent glioblastoma
verfasst von
Aurélien Corroyer-Dulmont
Elodie A. Pérès
Aurélie N. Gérault
Ariel Savina
Fanny Bouquet
Didier Divoux
Jérôme Toutain
Méziane Ibazizène
Eric T. MacKenzie
Louisa Barré
Myriam Bernaudin
Edwige Petit
Samuel Valable
Publikationsdatum
01.04.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Nuclear Medicine and Molecular Imaging / Ausgabe 4/2016
Print ISSN: 1619-7070
Elektronische ISSN: 1619-7089
DOI
https://doi.org/10.1007/s00259-015-3225-0

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