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Specialty: Radiology
Condition: Multiple Sclerosis

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Total 26 results found since Jan 2013.

A Hybrid Approach for Sub-Acute Ischemic Stroke Lesion Segmentation Using Random Decision Forest and Gravitational Search Algorithm.
CONCLUSION: This paper provides a new hybrid GSA-RDF classifier technique to segment the ischemic stroke lesions in MR images. The experimental results demonstrate that the proposed technique has the Root Mean Square Error (RMSE), Mean Absolute Percentage Error (MAPE), and Mean Bias Error (MBE) ranges are 16.5485 %, 7.2654 %, and 2.4585 %individually. The proposed RDF-GSA algorithm has better precision and execution when compared with the existing ischemic stroke segmentation method. PMID: 31975663 [PubMed - in process]
Source: Current Medical Imaging Reviews - January 26, 2020 Category: Radiology Tags: Curr Med Imaging Rev Source Type: research

Detection of early infarction signs with machine learning-based diagnosis by means of the Alberta Stroke Program Early CT score (ASPECTS) in the clinical routine
ConclusionFor ASPECTS assessment, the examined software may provide valid data in case of normal brain. It may enhance the work of neuroradiologists in clinical decision making. A final human check for plausibility is needed, particularly in patient groups with pre-existing cerebral changes.
Source: Neuroradiology - July 31, 2018 Category: Radiology Source Type: research

A Deep Learning-Based Approach to Reduce Rescan and Recall Rates in Clinical MRI Examinations ADULT BRAIN
CONCLUSIONS: Fast, automated deep learning–based image-quality rating can decrease rescan and recall rates, while rendering them technologist-independent. It was estimated that decreasing rescans and recalls from the technologists' values to the values of deep learning could save hospitals $24,000/scanner/year.
Source: American Journal of Neuroradiology - February 13, 2019 Category: Radiology Authors: Sreekumari, A., Shanbhag, D., Yeo, D., Foo, T., Pilitsis, J., Polzin, J., Patil, U., Coblentz, A., Kapadia, A., Khinda, J., Boutet, A., Port, J., Hancu, I. Tags: ADULT BRAIN Source Type: research

Finding maximally disconnected subnetworks with shortest path tractography
We present a novel method that extends current CLSM approaches by introducing a fast reliable and accurate way for computing disconnectomes, i.e. identifying damaged or lesioned connections. We introduce a new algorithm that finds the maximally disconnected subgraph containing regions and region pairs with the greatest shared connectivity loss. After normalizing a stroke patient's segmented MRI lesion into template space, probability weighted structural connectivity matrices are constructed from shortest paths found in white matter voxel graphs of 210 subjects from the Human Connectome Project. Percent connectivity loss ma...
Source: NeuroImage: Clinical - June 19, 2019 Category: Radiology Source Type: research

White Matter Changes in Patients with Friedreich Ataxia after Treatment with Erythropoietin
CONCLUSIONSTo the best of our knowledge, this is the first DTI study to investigate the effects of EPO in a neurodegenerative disease. Anatomically, the diffusivity changes appear disease unspecific, and their biological underpinnings deserve further study.
Source: Journal of Neuroimaging - September 9, 2013 Category: Radiology Authors: Karl Egger, Christian Clemm Hohenberg, Michael F. Schocke, Charles R.G. Guttmann, Demian Wassermann, Marlene C. Wigand, Wolfgang Nachbauer, Christian Kremser, Brigitte Sturm, Barbara Scheiber‐Mojdehkar, Marek Kubicki, Martha E. Shenton, Sylvia Boesch Tags: Short Communication Source Type: research

Diffusion restriction of the optic nerve in patients with acute visual deficit
ConclusionDWI can identify ischemic lesions of the optic nerve. As in acute multiple sclerosis lesions, optic neuritis can also present in rare circumstances with diffusion restriction and can therefore not be ruled out solely by DWI MRI. J. Magn. Reson. Imaging 2013. © 2013 Wiley Periodicals, Inc.
Source: Journal of Magnetic Resonance Imaging - November 4, 2013 Category: Radiology Authors: Benjamin Bender, Christian Heine, Sören Danz, Felix Bischof, Katrin Reimann, Miriam Bender, Thomas Nägele, Ulrike Ernemann, Andreas Korn Tags: Original Research Source Type: research

Susceptibility‐weighted imaging and quantitative susceptibility mapping in the brain
This article reviews the basic principles of SWI, its clinical and research applications, the mechanisms governing brain susceptibility properties, and its practical implementation, with a focus on brain imaging. J. Magn. Reson. Imaging 2014. © 2014 Wiley Periodicals, Inc.
Source: Journal of Magnetic Resonance Imaging - October 1, 2014 Category: Radiology Authors: Chunlei Liu, Wei Li, Karen A. Tong, Kristen W. Yeom, Samuel Kuzminski Tags: Review Article Source Type: research

Assessment of blood–brain barrier disruption using dynamic contrast-enhanced MRI. A systematic review
In conclusion, DCE-MRI is shown to provide valuable information in a large variety of applications, ranging from common applications, such as grading of primary brain tumors, to more recent applications, such as assessment of subtle BBB dysfunction in Alzheimer's disease. Further research is required in order to establish consensus-based recommendations for data acquisition and analysis and, hence, improve inter-study comparability and promote wider use of DCE-MRI.
Source: NeuroImage: Clinical - November 3, 2014 Category: Radiology Source Type: research

Quantitative Mapping of Human Brain Vertical‐Occipital Fasciculus
CONCLUSIONWe believe that our work will pave the way for future imaging studies investigating VOF in different conditions such as stroke, traumatic brain injury, and multiple sclerosis.
Source: Journal of Neuroimaging - June 15, 2015 Category: Radiology Authors: Zafer Keser, Fehime Eymen Ucisik‐Keser, Khader M. Hasan Tags: Short Communication Source Type: research

Reproducibility and optimization of in  vivo human diffusion‐weighted MRS of the corpus callosum at 3T and 7T
In this study, we acquired comprehensive single‐volume DWS datasets of the human corpus callosum at 3T and 7T. We investigated the inter‐ and intra‐subject variability of empirical and modeled diffusion properties of tNAA [Davg(tNAA) and Dmodel(tNAA), respectively]. Subsequently, we used a jackknife‐like resampling approach to explore the variance of these properties in partial data subsets reflecting different total scan durations. The coefficients of variation (CV) and repeatability coefficients (CR) for Davg(tNAA) and Dmodel(tNAA) were calculated for both 3T and 7T, with overall lower variability in the 7T resul...
Source: NMR in Biomedicine - June 19, 2015 Category: Radiology Authors: Emily T. Wood, Ayse Ece Ercan, Francesca Branzoli, Andrew Webb, Pascal Sati, Daniel S. Reich, Itamar Ronen Tags: Research article Source Type: research

Identification of Neuroradiology MRI Protocol Errors via a Quality-Driven Categorization Approach
In a recent study, Smith-Bindman et al [1] found that during the 15-year period spanning 1996 to 2010, MRI use in large integrated health care systems grew by 10% annually. Consequently, there has also been recent interest in standardizing MRI protocols for common clinical entities such as multiple sclerosis and stroke [2,3]. Acquisition of MRI studies involves a complex process with many steps, any one of which can be a source of errors that lead to suboptimal image quality and/or an inadequate study to answer clinical questions.
Source: Journal of the American College of Radiology : JACR - October 23, 2015 Category: Radiology Authors: Daniel Thomas Ginat, Pranay Uppuluri, Gregory Christoforidis, Gregory Katzman, Seon-Kyu Lee Tags: Case studies in clinical practice management Source Type: research

Cortical thinning in the anterior cingulate cortex predicts multiple sclerosis patients’ fluency performance in a lateralised manner
Publication date: Available online 14 November 2015 Source:NeuroImage: Clinical Author(s): Olivia Geisseler, Tobias Pflugshaupt, Ladina Bezzola, Katja Reuter, David Weller, Bernhard Schuknecht, Peter Brugger, Michael Linnebank Cognitive impairment is as an important feature of Multiple Sclerosis (MS), and might be even more relevant to patients than mobility restrictions. Compared to the multitude of studies investigating memory deficits or basic cognitive slowing, executive dysfunction is a rarely studied cognitive domain in MS, and its neural correlates remain largely unexplored. Even rarer are topological stud...
Source: NeuroImage: Clinical - November 17, 2015 Category: Radiology Source Type: research

USPIO‐Enhanced MRI Neuroimaging: A Review
ABSTRACT MRI is a powerful tool for the diagnosis and management for a variety of central nervous system (CNS) diseases. Ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles are a novel category of MRI contrast agents that seem to play a crucial role in the imaging of CNS. Due to their physical properties, USPIOs act as blood pool agents. USPIOs improve visualization of tumor vasculature and relative cerebral blood volume measurements, tumor‐associated inflammation, inflammatory‐immune mediated disorders, stroke and vascular malformations. Ferumoxytol, a new type of USPIO agent, appears to have ideal character...
Source: Journal of Neuroimaging - November 1, 2015 Category: Radiology Authors: Maria Gkagkanasiou, Agapi Ploussi, Maria Gazouli, Efstathios P. Efstathopoulos Tags: Views and Review Source Type: research

Cortical thinning in the anterior cingulate cortex predicts multiple sclerosis patients' fluency performance in a lateralised manner
Publication date: 2016 Source:NeuroImage: Clinical, Volume 10 Author(s): Olivia Geisseler, Tobias Pflugshaupt, Ladina Bezzola, Katja Reuter, David Weller, Bernhard Schuknecht, Peter Brugger, Michael Linnebank Cognitive impairment is as an important feature of Multiple Sclerosis (MS), and might be even more relevant to patients than mobility restrictions. Compared to the multitude of studies investigating memory deficits or basic cognitive slowing, executive dysfunction is a rarely studied cognitive domain in MS, and its neural correlates remain largely unexplored. Even rarer are topological studies on specific co...
Source: NeuroImage: Clinical - December 4, 2015 Category: Radiology Source Type: research

Neurite Orientation Dispersion and Density Imaging Color Maps to Characterize Brain Diffusion in Neurologic Disorders
CONCLUSIONThe NODDI color maps could make this technique valuable in a clinical setting, providing comprehensive and accessible information in normal and pathological brain tissues in different neurological pathologies.
Source: Journal of Neuroimaging - April 30, 2016 Category: Radiology Authors: Eduardo Caverzasi, Nico Papinutto, Antonella Castellano, Alyssa H. Zhu, Paola Scifo, Marco Riva, Lorenzo Bello, Andrea Falini, Aditya Bharatha, Roland G. Henry Tags: Technology Update Source Type: research