Prognostic value of 11C-methionine volume-based PET parameters in IDH wild type glioblastoma

Bart R J van Dijken*, Alfred O Ankrah, Gilles N Stormezand, Rudi A J O Dierckx, Peter Jan van Laar, Anouk van der Hoorn

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

3 Citaten (Scopus)
34 Downloads (Pure)

Samenvatting

Purpose

C-11-Methionine (C-11-MET) PET prognostication of isocitrate dehydrogenase (IDH) wild type glioblastomas is inadequate as conventional parameters such as standardized uptake value (SUV) do not adequately reflect tumor heterogeneity. We retrospectively evaluated whether volume-based parameters such as metabolic tumor volume (MTV) and total lesion methionine metabolism (TLMM) outperformed SUV for survival correlation in patients with IDH wild type glioblastomas.

Methods

Thirteen IDH wild type glioblastoma patients underwent preoperative C-11-MET PET. Both SUV-based parameters and volume-based parameters were calculated for each lesion. Kaplan-Meier curves with log-rank testing and Cox regression analysis were used for correlation between PET parameters and overall survival.

Results

Median overall survival for the entire cohort was 393 days. MTV (HR 1.136, p = 0.007) and TLMM (HR 1.022, p = 0.030) were inversely correlated with overall survival. SUV-based C-11-MET PET parameters did not show a correlation with survival. In a paired analysis with other clinical parameters including age and radiotherapy dose, MTV and TLMM were found to be independent factors.

Conclusions

MTV and TLMM, and not SUV, significantly correlate with overall survival in patients with IDH wild type glioblastomas. The incorporation of volume-based C-11-MET PET parameters may lead to a better outcome prediction for this heterogeneous patient population.

Originele taal-2English
Artikelnummer0264387
Aantal pagina's8
TijdschriftPLoS ONE
Volume17
Nummer van het tijdschrift2
DOI's
StatusPublished - 25-feb.-2022

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