Search results for " brain"

Noise Filtering Using Edge-Driven Adaptive Anisotropic Diffusion

2008

This paper presents a method aimed to noise removal in MRI (Magnetic Resonance Imaging). We propose an improvement of Perona and Malik's anisotropic diffusion filter. In our schema, the diffusion equation of the filter has been modified to take into account the edges direction, This allows the filter to blur uniform areas, while it better preserves the edges. Both quantitative and qualitative evaluation is presented and the results are compared with other methods.

A Programmable Networked Processing Node for 3D Brain Vessels Reconstruction

2011

Real-time 3D imaging represents a developing trend in medical imaging. However, most of the 3D medical imaging algorithms are computationally intensive. In this paper, a programmable networked node for 3D brain vessels reconstruction is proposed. Starting from 2D PC-MRA (Phase-Contrast Magnetic Resonance Angiography) sequences, the node is able to generate the 3D brain vasculature using the MIP (Maximum Intensity Projection) algorithm. The node has been prototyped on the Celoxica RC203E board, equipped with a Virtex II FPGA, to get the advantages of an hardware implementation, reaching a better throughput with respect to analogous software implementations. Its generality and programmable ca…

The "political" brain:Marxian presuppositions in Vygotsky's psychology

2014

Active Ageing e Brain Gym: un percorso di formazione in Sicilia.

2022

L’interesse verso la tematica dell’invecchiamento attivo è in costante crescita, tanto a livello accademico che istituzionale, in ambito internazionale e nazionale. In quest’ottica l’OMS ha definito e sviluppato l’idea dell’Active Ageing (AA) come risposta concreta all’incremento della popolazione over 60 e alle sfide socioeconomiche ad esso connesse. Tuttavia, a livello nazionale si registrano ancora alcune criticità rispetto allo sviluppo di programmi integrati, diffusi e sistematici. In questo scenario si inserisce il progetto di ricerca “Prevenzione degli incidenti domestici e promozione dell'attività fisica delle persone over 60” promosso e coordinato dal partenariato tra l’ASP 6 di Pa…

Memory function after resolution of post traumatic amnesia

2005

Primary objectives: The aims of this pilot study were (1) to examine neuropsychological, particularly memory functions immediately after post-traumatic amnesia (PTA) resolution according to the Galveston Orientation and Amnesia Test (GOAT), and (2) to provide a preliminary exploration of pattern of performance on GOAT items across PTA duration. Methods and procedures: Thirty-seven head injured patients were administered the Recognition Memory Tests on the day that PTA resolved. Formal neuropsychological assessment was conducted on average 10 days after PTA resolution. Main outcomes and results: All the patients in the series showed memory impairment which varied in severity but was typicall…

Studies of selective TNF inhibitors in the treatment of brain injury from stroke and trauma: a review of the evidence to date

2014

Antonino Tuttolomondo, Rosaria Pecoraro, Antonio Pinto Biomedical Department of Internal and Specialistic Medicine, University of Palermo, Palermo, Italy Abstract: The brain is very actively involved in immune-inflammatory processes, and the response to several trigger factors such as trauma, hemorrhage, or ischemia causes the release of active inflammatory substances such as cytokines, which are the basis of second-level damage. During brain ischemia and after brain trauma, the intrinsic inflammatory mechanisms of the brain, as well as those of the blood, are mediated by leukocytes that communicate with each other through cytokines. A neuroinflammatory cascade has been reported to be activ…

Chaperons moleculae in brain tumors-CHAMOBRAT TRIAL: HSP60 and microRNAs related levels in tissue and circulating exosomes in human brain tumors befo…

Current regimen for high-grade gliomas is maximal safe surgical resection followed by external beam radiotherapy with concurrent temozolamide. Maximal tumor resection, however, must be balanced with preservation of the patient’s neurological function. A crucial prognostic factor in oncological neurosurgery is the extent of resection. Several studies have addressed the importance of extent of resection in gliomas surgery. Despite development in the fields of pre operative and intraoperative neuroimaging and neuromonitoring have ameliorated the survival rate and the quality of life for patients affected by high grade gliomas, the clinical outcome of patients with such gliomas remains extremel…

Neuroprotective properties of xenon and helium in an in vitro model of traumatic brain injury: one small step or one big jump?

2008

The role of erythropoietin in aneurysmal subarachnoid hemorrhage: from bench to bed side.

2013

DCE and DSC perfusion MRI acquisition: diagnostic accuracy during the follow-up of the primary and metastatic intra-axial brain tumors treated by Ste…

Distinguishing radiation necrosis from tumor recurrence and tumor progression is crucial for the evaluation of treatment response and treatment planning. The appearance of treatment-induced tissue necrosis on conventional Magnetic Resonance Imaging (MRI) are very similar to brain tumor recurrence and it could be difficult to differentiate the two entities during the follow-up MRI examinations. Dynamic Susceptibility Contrast-enhanced (DSC) and Dynamic Contrast-Enhanced (DCE) are the MRI perfusion techniques using an exogenous, intravascular, no diffusible gadolinium-based contrast agent. The aim of this study is to compare the diagnostic accuracy of DSC and DCE perfusion MRI in the differen…