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Erschienen in: Journal of Neuro-Oncology 2/2012

01.04.2012 | Clinical Study - Patient Study

Clinical characteristics of meningiomas assessed by 11C-methionine and 18F-fluorodeoxyglucose positron-emission tomography

verfasst von: Hideyuki Arita, Manabu Kinoshita, Yoshiko Okita, Ryuichi Hirayama, Tadashi Watabe, Kayako Ishohashi, Noriyuki Kijima, Naoki Kagawa, Yasunori Fujimoto, Haruhiko Kishima, Eku Shimosegawa, Jun Hatazawa, Naoya Hashimoto, Toshiki Yoshimine

Erschienen in: Journal of Neuro-Oncology | Ausgabe 2/2012

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Abstract

The clinical course of meningioma varies from case to case, despite similar characteristics on magnetic resonance (MR) imaging. Functional imaging including 11C-methionine and 18F-fluorodeoxyglucose (FDG) positron-emission tomography (PET) has been widely studied for noninvasive preoperative evaluation of brain tumors. However, few reports have examined correlations between meningiomas and findings on 11C-methionine and FDG PET. The objective of this study was to clarify the relationship between tumor characteristics and 11C-methionine and FDG uptake in meningiomas. For 68 meningiomas in 51 cases, 11C-methionine uptake was evaluated by measuring both mean and maximum tumor/normal (T/N) ratio for the whole area of the tumors. FDG uptake in 44 of those meningiomas was also analyzed. Tumor size was measured volumetrically, and tumor-doubling time was estimated. Histopathological evaluation was performed in 19 surgical cases. Mean and maximum T/N ratios of 11C-methionine PET were significantly higher in skull-base lesions than in non-skull-base lesions. Correlations of mean and maximum T/N ratio of 11C-methionine PET with tumor-doubling time, MIB-1 labeling index, microvessel density and World Health Organization grading were not significant. Mean T/N ratio of 11C-methionine PET correlated significantly with tumor volume according to logarithm regression modeling (P < 0.0001, R = 0.544). However, mean and maximum T/N ratio of FDG-PET correlated with none of the tumor characteristics described above. These results suggest that 11C-methionine uptake correlates with tumor volume, but not with tumor aggressiveness.
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Metadaten
Titel
Clinical characteristics of meningiomas assessed by 11C-methionine and 18F-fluorodeoxyglucose positron-emission tomography
verfasst von
Hideyuki Arita
Manabu Kinoshita
Yoshiko Okita
Ryuichi Hirayama
Tadashi Watabe
Kayako Ishohashi
Noriyuki Kijima
Naoki Kagawa
Yasunori Fujimoto
Haruhiko Kishima
Eku Shimosegawa
Jun Hatazawa
Naoya Hashimoto
Toshiki Yoshimine
Publikationsdatum
01.04.2012
Verlag
Springer US
Erschienen in
Journal of Neuro-Oncology / Ausgabe 2/2012
Print ISSN: 0167-594X
Elektronische ISSN: 1573-7373
DOI
https://doi.org/10.1007/s11060-011-0759-2

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