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Başlık: Meningiomas with conventional MRI findings resembling intraaxial tumors: Can perfusion-weighted MRI be helpful in differentiation?
Yazarlar: Uludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.
Uludağ Üniversitesi/Tıp Fakültesi/Beyin Cerrahisi Anabilim Dalı.
0000-0002-3425-0740
Hakyemez, Bahattin
Yıldırım, Nalan
Erdoğan, Cüneyt
Kocaeli, Hasan
Korfalı, Ender
Parlak, Müfit
AAG-8521-2021
AAI-2318-2021
Anahtar kelimeler: Neurosciences & neurology
Radiology, nuclear medicine & medical imaging
Perfusion imaging
Meningioma
Magnetic resonance
Brain tumors
Maps
Gliomas
Brain
Contrast
Gradient-echo
Cystic meningiomas
Malignant meningiomas
Cerebral blood-volume
Yayın Tarihi: 2006
Yayıncı: Springer
Atıf: Hakyemez, B. vd. (2006). ''Meningiomas with conventional MRI findings resembling intraaxial tumors: can perfusion-weighted MRI be helpful in differentiation?''. Neuroradiology, 48(10), 695-702.
Özet: Introduction To investigate the contribution of perfusion-weighted MRI to the differentiation of meningiomas with atypical conventional MRI findings from intraaxial tumors. Methods We retrospectively analyzed 54 meningiomas, 12 glioblastomas and 13 solitary metastases. We detected 6 meningiomas with atypical features on conventional MRI resembling intraaxial tumors. The regional cerebral blood flow (rCBV) ratios of all tumors were calculated via perfusion-weighted MRI. The signal intensity-time curves were plotted and three different curve patterns were observed. The type 1 curve resembled normal brain parenchyma or the postenhancement part was minimally below the baseline, the type 2 curve was similar to the type 1 curve but with the postenhancement part above the baseline, and the type 3 curve had the postenhancement part below the baseline accompanied by widening of the curve. Student's t-test was used for statistical analysis. Results On CBV images meningiomas were hypervascular and the mean rCBV ratio was 10.58 +/- 2.00. For glioblastomas and metastatic lesions, the rCBV ratios were 5.02 +/- 1.40 and 4.68 +/- 1.54, respectively. There was a statistically significant difference in rCBV ratios between meningiomas and glioblastomas and metastases (P < 0.001). Only one of the meningiomas displayed a type 2 curve while five showed a type 3 curve. Glioblastomas and metastases displayed either a type 1 or a type 2 curve. None of the meningiomas showed a type 1 curve and none of the glioblastomas or metastases showed a type 3 curve. Conclusion Differentiating meningiomas with atypical conventional MRI findings from malignant intraaxial tumors can be difficult. Calculation of rCBV ratios and construction of signal intensity-time curves may contribute to the differentiation of meningiomas from intraaxial tumors.
URI: https://doi.org/10.1007/s00234-006-0115-y
https://link.springer.com/article/10.1007%2Fs00234-006-0115-y
http://hdl.handle.net/11452/21683
ISSN: 0028-3940
Koleksiyonlarda Görünür:Scopus
Web of Science

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