A functional magnetic resonance imaging study of factors influencing motor function after surgery for gliomas in the rolandic region.

Background: Pre- and postoperative fMRI was performed in patients with rolandic gliomas to evaluate factors influencing motor function after surgery.

Methods: The study population consisted of 9 right-handed patients (mean age, 43.3 years; range, 25-67, 2 female/7 male) affected by high-grade gliomas growing within or adjacent to the rolandic cortex.

Real-time 3T fMRI data of brain tumour patients for intra-operative localization of primary motor areas.

Introduction: In patients with tumours in or near the motor cortex reliable intra-operative identification of the precentral gyrus can be difficult due to anatomical dislocation. Maps of functional magnetic resonance imaging (fMRI) based on the blood oxygen level dependent (BOLD) effect are used to localize eloquent functional areas of the brain but require postprocessing for reduction of false positive activations. We set the focus of this study on the evaluation of feasibility and clinical usefulness of using real-time fMRI t-maps without postprocessing for pre-operative planning and intra-operative localization of functional motor areas.

Human brain structures related to plantar vibrotactile stimulation: a functional magnetic resonance imaging study.

The purpose of this study was to investigate the sensorimotor cortex response to plantar vibrotactile stimulation using a newly developed MRI compatible vibration device. Ten healthy subjects (20-45 years) were investigated. Vibrotactile stimulation of the sole of the foot with a frequency of 50 Hz and a displacement of 1 mm was performed during fMRI (echo-planar imaging sequence at 1.