Search results for " neuroradiologia"

TERAPIA TRANS-CRANICA AD ULTRASUONI FOCALIZZATI GUIDATI DA RISONANZA MAGNETICA UTILIZZANDO UN SISTEMA INTEGRATO CON UNO SCANNER RM DA 1.5T

2019

Scopo Negli ultimi anni la terapia transcranica ad ultrasuoni focalizzati guidati da risonanza magnetica (tcMRgFUS) per il trattamento di disordini neurologici quali il tremore essenziale (ET) e il Parkinson tremorigeno (PD) è stata effettuata utilizzando esclusivamente scanner RM da 3T. Presentiamo i risultati ottenuti con il primo sistema tcMRgFUS mai integrato con uno scanner RM da 1.5T. Materiali e metodi 50 pazienti (39 ET; 11 PD) sono stati selezionati per essere sottoposti a tcMRgFUS (talamotomia monolaterale; target: nucleo ventrale intermedio, VIM). I pazienti arruolati sono stati valutati prima del trattamento e 2 giorni dopo. L'efficacia del trattamento è stata valutata utilizzan…

Is there still a role for lesioning in functional neurosurgery: the Italian experience of delivering focused ultrasound high energy through a 1,5 tes…

2017

Tecnica, indicazioni e risultati trans-cranial MRgFUS

2015

Presentazione prima installazione nazionale di un apparecchiatura tcMRgFUS.

THALAMIC PARCELLATION FOR TARGET IDENTIFICATION INTRANS-CRANIAL MR-GUIDED FOCUSED ULTRASOUND (TCMRGFUS)THALAMOTOMIES: A PRELIMINARY PROBABILISTC TRAC…

2019

Is trans-cranial MR-guided Focused UltraSound a repeatable treatment option? Report of a successfully re-treated patient

2018

Background: In recent years, transcranial Magnetic Resonance-guided Focused UltraSounds (tcMRgFUS) treatments for functional neurological disorders are giving a new thrust to the field of therapeutic brain lesioning. This technique has been proven safe and effective in selected patients. Here we present the case of a patient affected by tremor combined with parkinsonism who underwent a second tcMRgFUS thalamotomy because of relapsing tremor after a few months from the first tcMRgFUS treatment. Materials and Methods: A 72-year-old, right-handed man, who came to our observation because of a disabling tremor affecting mainly his upper right limb and refusing any invasive surgical procedure. Hi…

EMORRAGIA IN TUMOR DA NEURINOMA DELL’VIII N.C. & SIMDROMI PARALITICHE ANTERIORE E POSTERIORE IMPROVVISA: SEMEIOTICA RADIOLOGICA

2011

Gli autori riportano un raro caso clinico di una paziente di 77 anni che giunge alla nostra osservazione in regime di urgenza per vertigine improvvisa associata a nausea e vomito, stato confusionale, atassia, paralisi completa del VI nervo cranico di destra con strabismo convergente, segni di sofferenza del IX, X ed XI nervo cranico omolaterali all’abducente e iniziale comparsa di segni statici e dinamici di paralisi periferica del VII nervo cranico di destra. L’insorgenza improvvisa di Sindromi paralitiche associate, anteriori e posteriori, ha indirizzato verso il sospetto di lesione occupante spazio a sede in fossa cranica posteriore/tronco encefalo richiedendo pertanto l’ausilio della di…

ROLE OF ENDOVASCULAR EMBOLIZATION IN THE MULTIDISCIPLINARY MANAGEMENT OF RUPTURED BRAIN ARTERIOVENOUS MALFORMATIONS

2022

Brain arteriovenous malformations (bAVMs) are congenital defects of vasculogenesis, the natural history of which is characterized by a significant morbidity and mortality related to the risk of bleeding. Their management remains challenging, since complete eradication is often difficult. Embolization, surgery, or radiosurgery alone are safe and effective for small unruptured AVMs, while a multidisciplinary approach should be pursued for larger ones. We report a case of intracerebral haemorrhage due to the rupture of a large bAVM, for which a multidisciplinary approach was adopted: endovascular partial embolization followed by complete surgical removal.

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…

Superior Canal Dehiscence: Multidetector-Row CT Evaluation

2007

MRI Characterization of non-Gaussian water diffusion in the brain using Diffusion Kurtosis Imaging (DKI)

2016

Diffusion tensor imaging (DTI) is the most commonly used technique to extract microstructural features from a set of diffusion-weighted images. In addition to the metrics obtained with DTI, diffusion kurtosis imaging (DKI) can provide non-Gaussian diffusion measures by means of the kurtosis tensor. DKI give an dimensionless measure that quantifies the deviation of the water diffusion displacement profile from the Gaussian distribution of unrestricted diffusion, providing a measure of the degree of diffusion hindrance or restriction. DKI has shown to be more sensitive to tissue microstructural changes in both normal and pathological neural tissue. The aim of this work is the description of t…