Source analysis of the magnetic field evoked during self-paced finger movements.

Objective: The aim of this study is to investigate a source of cortical magnetic fields evoked by index finger movements.

Methods: We analysed both movement-related cortical fields (MRCFs) and somatosensory-evoked fields (SEFs) by single equivalent current dipole (ECD) method in six healthy subjects. Dipole locations were superimposed on MR images of each individual subject.

Tuberculoma mimicking falx meningioma--case report.

A 25-year-old male presented with an intracranial tuberculoma mimicking falx meningioma manifesting as right lower monoparesis. The patient had a past history of pulmonary tuberculosis, cured by antituberculous therapy. Computed tomography and magnetic resonance (MR) imaging showed a lesion mimicking a falx meningioma.

Extensive and dense calcification in the core of a ventrally exophytic brainstem glioma.

The first case of a ventrally exophytic pontine glioma with extensive and dense calcification is reported. A 10-year-old boy presented with a generalized seizure. The skull radiogram and CT scan showed a dense area of calcification, revealed by MRI as the core of a ventrally exophytic tumor.