Search results for "MRI."

First-Episode Psychotic Patients Showed Longitudinal Brain Changes Using fMRI With an Emotional Auditory Paradigm

2020

Most previous longitudinal studies of functional magnetic resonance imaging (fMRI) in first-episode psychosis (FEP) using cognitive paradigm task found an increased activation after antipsychotic medications. We designed an emotional auditory paradigm to explore brain activation during emotional and nonemotional word processing. This study aimed to analyze if longitudinal changes in brain fMRI BOLD activation is present in patients vs. healthy controls. A group of FEP patients (n = 34) received clinical assessment and had a fMRI scan at baseline and follow-up (average, 25-month interval). During the fMRI scan, both emotional and nonemotional words were presented as a block design. Results w…

Intrabiliary rupture of hepatic hydatid cyst: MRI findings

2016

Learning objectives Background Findings and procedure details Conclusion Personal information References

The Brain Resting-State Functional Connectivity Underlying Violence Proneness: Is It a Reliable Marker for Neurocriminology? A Systematic Review

2019

Introduction: There is growing scientific interest in understanding the biological mechanisms affecting and/or underlying violent behaviors in order to develop effective treatment and prevention programs. In recent years, neuroscientific research has tried to demonstrate whether the intrinsic activity within the brain at rest in the absence of any external stimulation (resting-state functional connectivity; RSFC) could be employed as a reliable marker for several cognitive abilities and personality traits that are important in behavior regulation, particularly, proneness to violence. Aims: This review aims to highlight the association between the RSFC among specific brain structures and the…

A SIR based method for pancreas iron burden measurement in MRI T2* GRE sequences.

2009

A critical review of non invasive procedures for the evaluation of body iron burden in thalassemia major patients

2008

Aberrant brain functional networks in type 2 diabetes mellitus: A graph theoretical and support-vector machine approach

2022

ObjectiveType 2 diabetes mellitus (T2DM) is a high risk of cognitive decline and dementia, but the underlying mechanisms are not yet clearly understood. This study aimed to explore the functional connectivity (FC) and topological properties among whole brain networks and correlations with impaired cognition and distinguish T2DM from healthy controls (HC) to identify potential biomarkers for cognition abnormalities.MethodsA total of 80 T2DM and 55 well-matched HC were recruited in this study. Subjects’ clinical data, neuropsychological tests and resting-state functional magnetic resonance imaging data were acquired. Whole-brain network FC were mapped, the topological characteristics were ana…

Problēmrisināšanas prasmju identificēšana vidusskolas matemātikā

2021

Problēmrisināšanas prasmju identificēšana vidusskolas matemātikā. Artūrs Ļevikins, darba vadītāja Mg. paed. Aira Kumerdanka. Darba teorētiskajā daļā ir aprakstīta komplekso uzdevumu vidusskolas matemātikā, struktūra un pazīmes, ka arī normatīvo dokumentu prasības attiecībā uz to pielietošanu mācību procesā. Darba pētnieciskajā daļā ir izstrādāts un aprobēts komplekso uzdevumu komplekts, grupējot pielietotās risināšanas metodes un izteiktākās problēmas. Darba turpinājumā ir aprakstīta atsevišķo problēmrisināšanas prasmju apguve ar snieguma līmeņa rubrikām, kā arī izstrādāts ieteikumu komplekts skolotājiem turpmākam darbam ar katru izcelto prasmi atkarībā no snieguma līmeņa. Diplomdarbs satur…

PROPOSAL FOR A LANDSCAPE EVALUATION SYSTEM

2023

Abstract. This paper describes a system, currently being designed, for both perceptual analysis and aesthetic evaluation of a landscape. The choice of this topic is motivated by the fact that systems related to landscape visibility (e.g. Geographical Information Systems (GIS) for visual impact assessment) are not fully satisfactory when it comes to assessing the aesthetic appearance. They mainly analyse geometric aspects, such as the width of visual basins or the interference of visual trajectories, which can be expressed by objective and comparable parameters. Instead, for effective landscape knowledge and protection, it is important to consider other factors that cannot be easily measured…

Malignancy course of pituitary adenoma in MEN1 syndrome: Clinical-Neuroradiological signs

2020

Pituitary carcinomas (PCa) are extremely rare, indistinguishable from pituitary adenomas on histopathological grounds and have a poor prognosis. Most PCa start as PRL or ACTH secreting tumors in males, with relapsing invasive behaviour, refractoriness to medical and radiotherapy and increasing hormonal levels. The presence of distant metastases is still required for the diagnosis of PCa. The association with genetic endocrine diseases must be taken into account, since it adds further risk of evolution towards malignancy. Intradural spinal metastases have also been reported, so a complete craniospinal MR evaluation is recommended, when clinically indicated. We report a case of PCa, associate…

Motor Cortex Function in Fibromyalgia: A Study by Functional Near-Infrared Spectroscopy

2019

Previous studies indicated changes of motor cortex excitability in fibromyalgia (FM) patients and the positive results of transcranial stimulation techniques. The present study aimed to explore the metabolism of motor cortex in FM patients, in resting state and during slow and fast finger tapping, using functional Near-Infrared Spectroscopy (fNIRS), an optical method which detects in real time the metabolism changes in the cortical tissue. We studied 24 FM patients and 24 healthy subjects. We found a significant slowness of motor speed in FM patients compared to controls. During resting state and slow movement conditions, the metabolism of the motor areas was similar between groups. The oxy…