Meningiomas with conventional MRI findings resembling intraaxial tumors: Can perfusion-weighted MRI be helpful in differentiation?

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dc.contributor.buuauthorHakyemez, Bahattin
dc.contributor.buuauthorYıldırım, Nalan
dc.contributor.buuauthorErdoğan, Cüneyt
dc.contributor.buuauthorKocaeli, Hasan
dc.contributor.buuauthorKorfalı, Ender
dc.contributor.buuauthorParlak, Müfit
dc.contributor.departmentUludağ Üniversitesi/Tıp Fakültesi/Radyoloji Anabilim Dalı.tr_TR
dc.contributor.departmentUludağ Üniversitesi/Tıp Fakültesi/Beyin Cerrahisi Anabilim Dalı.tr_TR
dc.contributor.orcid0000-0002-3425-0740tr_TR
dc.contributor.researcheridAAG-8521-2021tr_TR
dc.contributor.researcheridAAI-2318-2021tr_TR
dc.date.accessioned2021-09-06T05:28:19Z
dc.date.available2021-09-06T05:28:19Z
dc.date.issued2006
dc.description.abstractIntroduction 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.en_US
dc.identifier.citationHakyemez, B. vd. (2006). ''Meningiomas with conventional MRI findings resembling intraaxial tumors: can perfusion-weighted MRI be helpful in differentiation?''. Neuroradiology, 48(10), 695-702.en_US
dc.identifier.endpage702tr_TR
dc.identifier.issn0028-3940
dc.identifier.issue10tr_TR
dc.identifier.pubmed16896907tr_TR
dc.identifier.scopus2-s2.0-33749344535tr_TR
dc.identifier.startpage695tr_TR
dc.identifier.urihttps://doi.org/10.1007/s00234-006-0115-y
dc.identifier.urihttps://link.springer.com/article/10.1007%2Fs00234-006-0115-y
dc.identifier.urihttp://hdl.handle.net/11452/21683
dc.identifier.volume48tr_TR
dc.identifier.wos000240982200001tr_TR
dc.indexed.pubmedPubmeden_US
dc.indexed.scopusScopusen_US
dc.indexed.wosSCIEen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.journalNeuroradiologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergitr_TR
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNeurosciences & neurologyen_US
dc.subjectRadiology, nuclear medicine & medical imagingen_US
dc.subjectPerfusion imagingen_US
dc.subjectMeningiomaen_US
dc.subjectMagnetic resonanceen_US
dc.subjectBrain tumorsen_US
dc.subjectMapsen_US
dc.subjectGliomasen_US
dc.subjectBrainen_US
dc.subjectContrasten_US
dc.subjectGradient-echoen_US
dc.subjectCystic meningiomasen_US
dc.subjectMalignant meningiomasen_US
dc.subjectCerebral blood-volumeen_US
dc.subject.scopusCerebral Blood Volume; N Acetylaspartic Acid; Glioblastomaen_US
dc.subject.wosClinical neurologyen_US
dc.subject.wosNeuroimagingen_US
dc.subject.wosRadiology, nuclear medicine & medical imagingen_US
dc.titleMeningiomas with conventional MRI findings resembling intraaxial tumors: Can perfusion-weighted MRI be helpful in differentiation?en_US
dc.typeArticle
dc.wos.quartileQ2 (Neuroimaging)en_US
dc.wos.quartileQ3en_US

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