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Germinoma originating in the basal ganglia is rare, and the majority of reported papers have been from Japan. In a collection of the first 500 cases of primary brain tumors in children in Taipei Veterans General Hospital, six pure germinomas with tissue diagnosis situated in this location. We reviewed the clinical features, neuroimaging studies, tumor(More)
BACKGROUND Cavernous hemangioma in the cavernous sinus (CS) is a rare vascular tumor. Direct microsurgical approach usually results in massive hemorrhage. Radiosurgery has emerged as a treatment alternative to microsurgery. OBJECTIVE To further investigate the role of Gamma Knife surgery (GKS) in treating CS hemangiomas. METHODS This was a retrospective(More)
OBJECTIVE To analyze the clinical features and outcomes of patients with posterior reversible encephalopathy syndrome(PRES), the risk factors of PRES-related intracranial hemorrhage (ICH), and all-cause mortality in patients with systemic lupus erythematosus (SLE). METHODS Twenty-six episodes of PRES were identified in 23 SLE patients, using an electronic(More)
OBJECT Central neurocytoma (CN) is considered to be a benign neuronal tumor with possible atypical behavior. Microsurgery, radiation therapy (RT) and radiosurgery all have been used in treating this rare disease during the past decade. In this study, the authors present the experience with gamma knife radiosurgery (GKRS) on 14 patients with CN during a(More)
Regional differences in human brain development during infancy have been studied for many years, but little is known about how regionalization of the brain proceeds during intrauterine life. We investigated the regionalization of cerebral volume and cortical convolutions based on the volumetric magnetic resonance images (MRIs) of 43 fetuses, ranging from 21(More)
The ability to cluster different perfusion compartments in the brain is critical for analyzing brain perfusion. This study presents a method based on a mixture of multivariate Gaussians (MoMG) and the expectation-maximization (EM) algorithm to dissect various perfusion compartments from dynamic susceptibility contrast (DSC) MR images so that each(More)
OBJECT The optimal management of central neurocytoma (CN) remnants and recurrences is still not clear. To date no large series of patients treated with Gamma Knife surgery (GKS) for CNs has been published. For that reason the authors decided to combine data from 5 different centers so that they could analyze the largest population of patients treated with(More)
AIM To evaluate factors related to the technical and haemostatic outcomes of endovascular management in patients with head and neck cancers (HNC) associated with carotid blowout syndrome (CBS) of the external carotid artery (ECA). MATERIALS AND METHODS Between 2002 and 2011, 34 patients with HNC with CBS involving branches of the ECA underwent(More)
Dynamic-susceptibility-contrast MR perfusion imaging is a widely used imaging tool for in vivo study of cerebral blood perfusion. However, visualization of different hemodynamic compartments is less investigated. In this work, independent component analysis, thresholding, and Bayesian estimation were used to concurrently segment different tissues, i.e.,(More)
To evaluate the imaging quality of head CT at lowered radiation dose by combining filtered back projection (FBP) and iterative reconstruction (IR) algorithms. Experimental group A (n = 66) underwent CT with 43 % tube current reduction, and group B (n = 58) received an equivalent reduced dose by lowering the tube voltage. An age- and sex-matched control(More)