BACKGROUND AND PURPOSE:Differentiating between primary cerebral lymphoma and glioblastoma multiforme (GBM) based on conventional MR imaging sequences may be impossible. Our hypothesis was that there are significant differences in fractional anisotropy (FA) and apparent diffusion coefficient (ADC) between lymphoma and GBM, which will allow for differentiation between them.
BACKGROUND AND PURPOSE:Contrast leakage results in underestimation of the CBV of brain tumors. Our aim was to compare the diagnostic performance of DSC perfusion MR imaging without and with mathematic contrast-leakage correction in differentiating PCNSLs and glioblastomas.
BACKGROUND AND PURPOSE:A common imaging finding in brain abscess and necrotic glioblastoma is a T2 hypointense margin. The features of this hypointense rim on SWI have not been previously described, to our knowledge. We aimed to differentiate abscesses from glioblastomas by assessing the morphology of their lesion margin by using SWI.
Intracranial pial arteriovenous fistulas (AVFs) are rare vascular lesions, of which fewer than 90 cases have been reported in the literature. They are composed of one or more arterial feeding vessels and a single draining vein that usually result in a huge varix. Because of the high-flow shunting, a poor prognosis is associated with conservative treatment. Surgical or endovascular treatment also poses various challenges. The authors present the cases of three patients in whom N-butyl-2-cyanoacrylate-assisted embolization was performed. Outcome in all three cases was good. The necessity of staged procedures to obliterate the AVF is also discussed.
TMax can be used to differentiate the chronic hypoperfusion state in unilateral CAS patients. Prolonged TMax in the MCA of either hemisphere may lead to lateralized impairment in cognition functions in patients with unilateral CAS.
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