Search results for " neuroradiologia."

showing 10 items of 110 documents

Presacral Myelolipoma

2014

Many reports have described adrenal myelolipomas but there have been only a few reports of extra-adrenal myelolipomas. We describe a 74-year-old woman who came to our observa- tion for MRI of the lumbar spine for typical lumbar back pain. In addition to signs of mild scoliosis and spondylo disc arthrosis, MR imaging revealed a presacral mass showing a heterogeneously high signal in all pulse sequences and almost completely suppressed on inversion recovery sequences for fat tissue. CT imaging confirmed the fatty nature of the lesion and no signs of bone involvement. These findings were most consistent with a diagnosis of a rare presacral myelolipoma as confirmed at histopathologic analysis. …

Settore MED/50 - Scienze Tecniche Mediche ApplicateSettore MED/37 - Neuroradiologiapresacral myelolipoma presacral masses MRI and CT findingsSettore MED/36 - Diagnostica Per Immagini E Radioterapia
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MRgFUS results Italy

2017

PURPOSE: To present our preliminary results achieved with the first Italian installation of a trans-cranial MRI-guided Focused Ultrasound Surgery (tcMRgFUS) certified system for functional neurosurgery. Moreover, to our knowledge, this is the world-first tcMRgFUS system ever installed on a 1.5T MRI unit. Technical issues faced to achieve a safe and effective treatment will be discussed focusing on MR high-resolution live imaging and thermometry sequences optimization. METHOD AND MATERIALS: Patient enrollment was based on indication for functional neurosurgery and evidence of medication-refractory disease; a detailed medical history has been collected together with a complete clinical examin…

Stereotaxic TechniquesBrain; High-Intensity Focused Ultrasound ablation; Magnetic Resonance Imaging Interventional; Minimally Invasive Surgical Procedures; Stereotaxic TechniquesHigh-Intensity Focused Ultrasound ablationSettore MED/27 - NeurochirurgiaBrainSettore MED/37 - NeuroradiologiaSettore MED/26 - NeurologiaMinimally Invasive Surgical ProcedureMagnetic Resonance Imaging InterventionalSettore MED/36 - Diagnostica Per Immagini E Radioterapia
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MR-guided focused ultrasound application for moving target tumor ablation in abdominal area: Coil selection

2020

PubMed: 32276552

SwineThermal ablationMagnetic Resonance Imaging InterventionalTumor ablationFocused ultrasound030218 nuclear medicine & medical imagingMagnetic resonance guided focused ultrasound surgery03 medical and health sciencesCE marking0302 clinical medicineEcho planar imagingAbdomenAnimalsHumansMedicineRadiology Nuclear Medicine and imagingRadiological and Ultrasound TechnologyEcho-Planar ImagingPhantoms Imagingbusiness.industryCoils magnetic resonance thermometry tracking echo planar imaging magnetic resonance-guided focused-ultrasound surgery CE marking validation verificationTrackingLiver NeoplasmsVerificationSettore MED/37 - NeuroradiologiaCoilsGeneral MedicineFocused ultrasound surgeryDisease Models AnimalLiverMagnetic resonance thermometryElectromagnetic coil030220 oncology & carcinogenesisHigh-Intensity Focused Ultrasound AblationbusinessSettore MED/36 - Diagnostica Per Immagini E RadioterapiaMri guidedMagnetic resonance thermometryBiomedical engineering
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Functional connectivity modulation induced by transcranial direct current stimulation of the motor network investigated by resting state fMRI

2015

This study is aimed at measuring the variation of functional connectivity between cortical brain regions after tDCS along time. For this purpose we enrolled 20 healthy right-handed subjects.

TDCSFMRISettore MED/37 - NeuroradiologiaSettore MED/26 - NeurologiaSettore MED/36 - Diagnostica Per Immagini E RadioterapiaSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)MRI
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Resting state FMRI: A tool to investigate functional connectivity modulation induced by transcranial direct current stimulation of the motor network

2016

Introduction: Resting-state functional connectivity (fcMRI) represents a novel fMRI approach that allows detection of temporal correlations in spontaneous BOLD signal oscillations while subjects rest quietly in the scanner. Under resting conditions the brain is engaged in spontaneous activity that causes a low frequencies (<0.1 Hz) BOLD signal fluctuations. Functional connectivity (FC) can be defined as the synchrony of neural activity among spatially distant regions. Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that is known to modulate cortical activity and FC among brain regions, as measured by functional magnetic resonance imaging. This st…

Transcranial direct-current stimulationResting state fMRIComputer sciencemedicine.medical_treatmentFunctional connectivityBiophysicsSettore MED/37 - NeuroradiologiaGeneral Physics and AstronomyGeneral MedicineSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Motor networkfcMRI fMRI BOLD tDCS ICA MRIModulationmedicineRadiology Nuclear Medicine and imagingSettore MED/36 - Diagnostica Per Immagini E RadioterapiaNeurosciencePhysica Medica
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Trauma cranico nello sport

2014

Trauma cranico neuroradiologia fisioterpaia TC RMSettore MED/50 - Scienze Tecniche Mediche ApplicateSettore MED/37 - NeuroradiologiaSettore MED/36 - Diagnostica Per Immagini E Radioterapia
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[Non-invasive trans-cranial magnetic resonance imaging-guided focused ultrasounds surgery to treat neurologic disorders]

2016

Negli anni passati le applicazioni non invasive degli ultrasuoni focalizzati guidati da risonanza magnetica per il trattamento dei disordini neurologici sono state osta- colate da limiti tecnici oggi finalmente superati. In Italia, nel corso del 2015, sono stati effettuati i primi trattamenti utilizzando per la prima volta al mondo un comune scanner di risonanza magnetica da 1.5T. I risultati a oggi ottenuti con questa nuova metodica e le sue future possibili appli- cazioni sono molto promettenti e aprono la strada verso nuove opzioni terapeutiche, sicure ed efficaci, un tempo impensabili. In past years non-invasive clinical applications of magnetic resonance-guided focused ultrasound for t…

Treatment OutcomeItalySettore MED/27 - NeurochirurgiaHumansHigh-Intensity Focused Ultrasound AblationSettore MED/37 - NeuroradiologiaNervous System DiseasesMagnetic Resonance ImagingHuman
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Hippocampal and Amygdalar Volumes Changes in Drug Addicts: A Preliminary Study

2007

Oral comunication for American Society of Neuroradiology 45th Annual Meeting. Chicago, June 9-14 2007

VBM hippocampus amygdala addictionSettore M-PSI/07 - Psicologia DinamicaSettore MED/37 - NeuroradiologiaAlexithymia hippocampus amygdalaSettore MED/36 - Diagnostica Per Immagini E Radioterapia
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Sviluppo di un software per l’analisi di immagini di Diffusion Kurtosis Imaging

2013

L’analisi mediante RM del tensore di diffusione (Diffusion Tensor Imaging, DTI) consente di valutare anche in vivo e con modalità non invasive il processo di diffusione delle molecole d’acqua nei tessuti biologici. La peculiare organizzazione di alcuni tessuti biologici (es: muscoli, sostanza bianca del sistema nervoso centrale e tessuti ad alta cellularità) influenza tale fenomeno rendendolo anisotropo e quindi ben valutabile con tali tecniche di studio. Nonostante i grandi vantaggi di tale tecnica, il DTI è basato su un modello molto semplificato che assume che lo spostamento per diffusione segua un profilo gaussiano il che è molto raro in un ambiente variegato come i tessuti biologic…

diffusion diffusion tensor diffusion kurtosis MRI DWI DTI DKI PythonSettore MED/37 - NeuroradiologiaSettore MED/36 - Diagnostica Per Immagini E RadioterapiaSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)
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Trans-cranial Magnetic Resonance-guided Focused UltraSound (tcMRgFUS) system integrated with a 1.5T: an SNR study on DQA phantoms

2018

Background: In recent years transcranial Magnetic Resonance-guided Focused Ultrasound Surgery (tcMRgFUS) treatments have been performed only using 3T units. Since following some internal analysis, planning images obtained using a 1.5T MRI’s body RF coil (as usually done with 3T systems) showed generally reasonable quality in terms of anatomy visualization and SNR but thermal images noise was above acceptable standard for treatments, a dedicated 2-channels head coil was developed (InSightec Ltd.) to ensure an adequate signal-to-noise ratio (SNR). Hence, we present the imaging protocol and the technological methods successfully used with the world-first installation of a certified tcMRgFUS sy…

dose quality assurance phantom focused ultrasound SNR MRISettore MED/37 - NeuroradiologiaSettore MED/36 - Diagnostica Per Immagini E RadioterapiaSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)
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