background: volume estimation of brain is important for many neurological applications. it is necessary in measuring brain growth and changes in brain in normal/abnormal patients. thus, accurate brain volume measurement is very important. magnetic resonance imaging (mri) is the method of choice for volume quantification due to excellent levels of image resolution and between-tissue contrast. st...

The oldest technique for measuring changes in brain size from MR scans is volumetry. Brain volumetry, at its most basic, involves using a mouse or similar device to draw around structures of interest in the brain, one slice at a time, at all the time points of interest, and count voxels within the boundaries to determine volume change between time-points. The limitations of this approach are fi...

Attention deficit hyperactivity disorder (ADHD) affects about 5% of school-aged child. Previous published works using different techniques of magnetic resonance imaging (MRI) have demonstrated that there may be some differences between the brain of people with and without this condition. This review aims at providing neurologists, pediatricians and psychiatrists an update on the differences bet...

Introduction: Evolution of the brain during life can be divided in three time periods: a period of maturation characterized by increasing myelination and brain growth, an intermediate adulthood period characterized by relative stability, and an ageing period marked by ventricular enlargement, brain atrophy, and white matter (WM) and gray matter (GM) deterioration. Furthermore, these brain evolu...

OBJECTIVE Many studies have reported pre-processing effects for brain volumetry; however, no study has investigated whether non-parametric non-uniform intensity normalization (N3) correction processing results in reduced system dependency when using an atlas-based method. To address this shortcoming, the present study assessed whether N3 correction processing provides reduced system dependency ...

Voxel-based morphometry (VBM) is a commonly used method to study volumetric variations on a whole brain basis. However, it is often criticized for potential confounds, mainly based on imperfect spatial registration. We therefore aimed to evaluate if VBM and "gold standard" manual volumetry are measuring the same effects with respect to subcortical gray matter volumes. Manual regions-of-interest...

Normal brain aging is an inevitable and heterogeneous process characterized by a selective pattern of structural changes. Such heterogeneity arises as a consequence of cumulative effects over the lifespan, including stress and mood effects, which drive different micro- and macro-structural alterations in the brain. Investigating these differences in healthy age-related changes is a major challe...

Background: Cerebral edema (CE) and intracranial hypertension (IHT) are complications of numerous neurological pathologies. However, the study CE noninvasive methods to predict IHT remains rudimentary. This aims identify in traumatic brain injury (TBI) patients relationship between volume lateral ventricles parameters pressure waveform (nICPW). Methods: is an analytical, descriptive, cross-sect...