Proton magnetic resonance spectroscopy in focal cortical dysplasia at 3T.

Purpose: Focal cortical dysplasia (FCD) type II is a frequent cause of medically intractable epilepsy. On conventional MRI diagnosis may be difficult. The purpose of our study was to assess the metabolic characteristics of MRI-typical or neuropathologically confirmed FCD II lesions at 3T.

Magnetic resonance imaging of focal cortical dysplasia: Comparison of 3D and 2D fluid attenuated inversion recovery sequences at 3T.

Purpose: Focal cortical dysplasia (FCD) is a frequent finding in drug resistant epilepsy. The aim of our study was to evaluate an isotropic high-resolution 3-dimensional Fluid-attenuated inversion recovery sequence (3D FLAIR) at 3T in comparison to standard 2D FLAIR in the diagnosis of FCD.

Materials And Methods: In a prospective study, 19 epilepsy patients with the MR diagnosis of FCD were examined with a sagittal 3D FLAIR sequence with modulated refocusing flip angle (slice thickness 1.

Functional hemispherectomy: postoperative motor state and correlation to preoperative DTI.

Introduction: Functional hemispherectomy (FH) is an infrequent method to reduce seizure frequency in patients with intractable epilepsy. The risk that hemispherotomy injures brain structures involved in residual motor function is challenging to predict. Our purpose was to evaluate MR diffusion tensor imaging (DTI) to preoperatively assess residual ipsilateral motor function prior to FH.

Is the type and extent of hippocampal sclerosis measurable on high-resolution MRI?

Introduction: The purpose of this study is to relate hippocampal volume and FLAIR signal intensity to Wyler grading of hippocampal sclerosis (HS).

Methods: Of 100 consecutive patients with temporal lobe epilepsy and HS as histopathological diagnosis, 32 had high-resolution 3 Tesla MRI and anatomically well-preserved hippocampi following amygdalo-hippocampectomy. Hippocampal volume on 3D T1-weighted gradient echo and signal intensity on coronal FLAIR sequences were determined using FreeSurfer and SPM tools and related to Wyler grading.

Outcome after epilepsy surgery in patients with MRI features of bilateral ammon's horn sclerosis.

In refractory temporal lobe epilepsy with unilateral ammon's horn sclerosis (uAHS) resective epilepsy surgery is an established treatment option whereas little evidence exists about the consequences of unilateral hippocampal resection in patients with bilateral ammon's horn sclerosis (bAHS). The aim of this study was to evaluate the post-surgical outcome of patients with bAHS after selective amygdalo-hippocampectomy (SAH) in comparison to uAHS patients. For this purpose, all bAHS and uAHS patients, identified at our center between 2003 and 2009 were analyzed retrospectively.