Diagnostic use of neuro-spect quantified with Tc-ECD a model based on normal data.

Objective: The purpose of the present study was to prospectively quantify the normal limits of brain perfusion using specific software in a group of asymptomatic young volunteers submitted to single-photon emission tomography (SPECT) with Tc-ethyl cysteinate dimer (Tc-ECD).

Methods: We used 15 MBq/kg of intravenous Tc-ECD in 30 healthy volunteers submitted to brief neuropsychological tests and a clinical questionnaire. These data were normalized relative to the cerebellum (Group 1) and to the brain cortex (Group 2).

Primary progressive aphasia patients evaluated using diffusion tensor imaging and voxel based volumetry-preliminary results.

Unlabelled: There are individuals who have a progressive language deficit without presenting cognitive deficits in other areas. One of the diseases related to this presentation is primary progressive aphasia (PPA).

Objective: Identify by means of diffusion tensor imaging (DTI) and measurements of cortical volume, brain areas that lead to dysphasia when presenting signs of impaired connectivity or reduced volume.

Route learning performance: is it a hippocampus function?

Introduction: In temporal lobe epilepsy (TLE), about 30% of the patients do not achieve adequate pharmacologic control of refractory crises, and surgery becomes an alternative. In ablative interventions, neuropsychologic testing of memory is a crucial step. However, evaluations of the right hippocampal functions have not been consistent.