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Neuroradiology Journal

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https://www.readbyqxmd.com/read/29417865/advanced-diffusion-weighted-imaging-in-patients-with-optic-neuritis-deficit-value-of-reduced-field-of-view-dwi-and-readout-segmented-dwi
#1
Achim Seeger, Maximilian Schulze, Frank Schuettauf, Ulrike Ernemann, Till-Karsten Hauser
Objective The objective of this article is to evaluate advanced techniques of diffusion-weighted imaging (DWI) and apparent diffusion coefficient (ADC) measurements of the optic nerve in patients with optic neuritis. Methods In this prospective and institutional review board-approved trial, we examined 15 patients with acute visual loss and clinical signs of optic neuritis including thin-slice multi-shot segmented readout of long variable echo trains (rs-EPI, RESOLVE) DWI and reduced field-of view DWI using a parallel transmit system (rFOV-EPI)...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29415610/orbital-apex-disorders-imaging-findings-and-management
#2
Pradeep Goyal, Steven Lee, Nishant Gupta, Yogesh Kumar, Manisha Mangla, Kusum Hooda, Shuo Li, Rajiv Mangla
Orbital apex disorders include orbital apex syndrome, superior orbital fissure syndrome and cavernous sinus syndrome. These disorders result from various etiologies, including trauma, neoplastic, developmental, infectious, inflammatory as well as vascular causes. In the past, these have been described separately based on anatomical locations of disease process; however, these three disorders share similar causes, diagnostic evaluation and management strategies. The etiology is diverse and management is directed to the causative process...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29400600/cocaine-abuse-longitudinal-mr-imaging-of-lasting-diffused-leukoencephalopathy
#3
Shuo Li, Roni Manyevitch, Kaltrina Sedaliu, Ahmed Abdelbaki, Nishant Gupta, Anil Kumar, Yogesh Kumar, Mark Rosovsky
Cocaine use has been known to cause a number of adverse neurological conditions, such as cerebral ischemia and posterior reversible leukoencephalopathy. The radiologic appearance of cocaine-induced leukoencephalopathy is confounded by a common contaminant, levamisole, which is also known to cause multifocal leukoencephalopathy. However, we encountered a case of diffuse leukoencephalopathy in a patient with cocaine use that had extensive involvement of the cerebral white matter, globus pallidi as well as the cerebellum...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29384424/longitudinal-assessment-of-gray-matter-volumes-and-white-matter-integrity-in-patients-with-medication-overuse-headache
#4
Yesim Beckmann, Sevgin Gökçe, Nabi Zorlu, H Sabiha Türe, Fazıl Gelal
Background Medication-overuse headache is a common clinical entity, but neuroimaging studies investigating volumetric and microstructural alterations of the brain in medication-overuse headache are rare. Therefore, in the current longitidunal study we evaluated gray matter volume and white matter integrity in patients with medication-overuse headache before and after drug withdrawal. Methods A prospective study evaluated 27 patients with medication-overuse headache and 27 age-, sex-, and education-matched healthy adults...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29366361/role-of-time-resolved-cta-in-intracranial-arteriovenous-malformation-evaluation-at-128-slice-ct-in-comparison-with-digital-subtraction-angiography
#5
Rupinder Singh, Vivek Gupta, Chirag Ahuja, Ajay Kumar, Kanchan K Mukherjee, Niranjan Khandelwal
Introduction The present study aimed to evaluate the accuracy of time-resolved-computed tomographic angiography (TR-CTA) on a 128-slice CT scanner vis-à-vis cerebral digital subtraction angiography (DSA) in defining the morphological and haemodynamic characteristics of cerebral arteriovenous malformation (AVM). Methods Twenty-one patients (age range 10-46, mean 24.8 years) with clinical suspicion of AVM and three patients (age range 23-35, mean 24.3 years) with diagnosed AVM who were on follow-up underwent DSA and TR-CTA, on average 1...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29350082/quantitative-dti-metrics-in-a-canine-model-of-krabbe-disease-comparisons-versus-age-matched-controls-across-multiple-ages
#6
Jonathan Y Li, Dana M Middleton, Steven Chen, Leonard White, Carley R Corado, Charles Vite, Allison Bradbury, James M Provenzale
Purpose The purpose of this study was to compare quantitative diffusion tensor imaging metrics in dogs affected with a model of Krabbe disease to age-matched normal controls. We hypothesized that fractional anisotropy would be decreased and radial diffusivity would be increased in the Krabbe dogs. Methods We used a highly reproducible region-of-interest interrogation technique to measure fractional anisotropy and radial diffusivity in three different white matter regions within the internal capsule and centrum semiovale in four Krabbe affected brains and three age-matched normal control brains...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29323624/sella-turcica-bridging-and-ossified-carotico-clinoid-ligament-correlation-with-sex-and-age
#7
Daniele Gibelli, Michaela Cellina, Stefano Gibelli, Marta Panzeri, Antonio Giancarlo Oliva, Giovanni Termine, Chiarella Sforza
Aim Sella turcica bridging and ossified carotico-clinoid ligament are two variants of the sella turcica, the origin of which is partially unknown. These variations should be properly recognised, as they may hamper the removal of the anterior clinoid process in surgical procedures. Therefore, our aim was to determine the prevalence of these two anatomical variants and to investigate their prevalence according to patient sex and age in a series of maxilla computed tomography scans. Materials and methods We revised 300 computed tomography scans of the head from northern Italian patients, stratified into three age groups (18-40 years, 41-60 years, >60 years): a logistic regression analysis was used to explore an association of sella turcica bridging with age and sex through Matlab software, also including a test for the extracted model ( P < 0...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29319396/detrimental-effect-of-systemic-vascular-risk-factors-on-brain-hemodynamic-function-assessed-with-mri
#8
Kevin S King, Min Sheng, Peiying Liu, Christopher D Maroules, Craig D Rubin, Ron M Peshock, Roderick W McColl, Hanzhang Lu
Background and purpose Vascular risk factors have been associated with decreased cerebral blood flow (CBF) but this is etiologically nonspecific and may result from vascular insufficiency or a response to decreased brain metabolic activity. We apply new MRI techniques to measure oxygen extraction fraction (OEF) and cerebral metabolic rate of oxygen consumption (CMRO2), hypothesizing that decreased CBF related to these vascular risk factors will be associated with increased OEF, confirming a primary vascular insufficiency...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29300119/single-photon-emission-tomography-imaging-in-patients-with-lyme-disease-treated-with-human-embryonic-stem-cells
#9
Geeta Shroff
Aim The purpose of this study was to evaluate the longitudinal changes in brain perfusion in patients with Lyme disease treated with human embryonic stem cells. Material and methods The study included 59 (age range 41.68 ± 16.37 years) patients with Lyme disease whose single-photon emission tomography imaging was performed before and after the human embryonic stem cell therapy. Technetium-hexa methyl propylene aminoxime single-photon emission tomography imaging was used to assess the hypoperfused lesions/regions in the brain prior to the therapy, as well as the improvement in perfusion after human embryonic stem cell treatment...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29171364/endovascular-embolization-of-branch-incorporated-cerebral-aneurysms
#10
Yasuhiro Kawabata, Takuya Nakazawa, Shunichi Fukuda, Satoru Kawarazaki, Tomokazu Aoki, Takumi Morita, Tetsuya Tsukahara
Objectives The aim of this study was to examine the feasibility, technique, and clinical and angiographic outcomes of endovascular coiling to treat a cerebral aneurysm with a branch incorporated into the aneurysmal wall. Methods From 2012 to 2016, 25 patients with 26 cerebral aneurysms having a branch incorporated into the aneurysm (9 unruptured, 17 ruptured) were treated to prevent rupture or re-bleeding from the sac while preserving the incorporated branch by using single-catheter ( n = 18), balloon-remodeling ( n = 4), stent-assisted coiling ( n = 3), or double-catheter ( n = 1) techniques...
December 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/29171363/professor-wieslaw-nowinski-25-years-of-contribution-to-the-development-of-digital-brain-atlases
#11
Jaroslaw Krejza
No abstract text is available yet for this article.
December 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/29096577/human-brain-atlasing-past-present-and-future
#12
Wieslaw L Nowinski
We have recently witnessed an explosion of large-scale initiatives and projects addressing mapping, modeling, simulation and atlasing of the human brain, including the BRAIN Initiative, the Human Brain Project, the Human Connectome Project (HCP), the Big Brain, the Blue Brain Project, the Allen Brain Atlas, the Brainnetome, among others. Besides these large and international initiatives, there are numerous mid-size and small brain atlas-related projects. My contribution to these global efforts has been to create adult human brain atlases in health and disease, and to develop atlas-based applications...
December 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/29068254/assessment-of-clot-length-with-multiphase-ct-angiography-in-patients-with-acute-ischemic-stroke
#13
Vanessa Polito, Roberta La Piana, Maria Del Pilar Cortes, Donatella Tampieri
Introduction Existing stroke literature demonstrates that rapid recanalization of vessels improves long-term prognosis after acute ischemic stroke. However, further optimization of the speed of the thrombectomy procedure, used to recanalize a blocked vessel, is limited by our minimal knowledge of the clot dimensions pre-procedure. Knowing the clot dimensions would allow planning of the thrombectomy procedure with the appropriate size and length of stent retriever, and determination of the correct site of the stent deployment ensuring total coverage of the clot by the stent retriever...
December 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28707961/encephalocraniocutaneous-lipomatosis-a-case-report-with-review-of-literature
#14
Shaista Siddiqui, Shazia Naaz, Mehtab Ahmad, Zafar Ahmad Khan, Shagufta Wahab, Basmah Abdur Rashid
Encephalocraniocutaneous lipomatosis (ECCL) or Haberland syndrome is an uncommon sporadic neurocutaneous syndrome of unknown origin. The rarity and common ignorance of the condition often makes diagnosis difficult. The hallmark of this syndrome is the triad of skin, ocular and central nervous system (CNS) involvement and includes a long list of combination of conditions. Herein we report a case of a 5-month-old male child who presented to our centre with complaint of seizure. The patient had various cutaneous and ocular stigmatas of the disease in the form of patchy alopecia of the scalp, right-sided limbal dermoid and a nodular skin tag near the lateral canthus of the right eye...
December 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28786774/back-pain-and-scoliosis-in-children-when-to-image-what-to-consider
#15
Sonia F Calloni, Thierry Agm Huisman, Andrea Poretti, Bruno P Soares
Back pain and scoliosis in children most commonly present as benign and self-limited entities. However, persistent back pain and/or progressive scoliosis should always be taken seriously in children. Dedicated diagnostic work-up should exclude etiologies that may result in significant morbidity. Clinical evaluation and management require a comprehensive history and physical and neurological examination. A correct imaging approach is important to define a clear diagnosis and should be reserved for children with persistent symptoms or concerning clinical and laboratory findings...
October 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28786747/parry-romberg-syndrome-conventional-and-advanced-mri-follow-up-in-a-boy
#16
Paolo Rigamonti, Silvia Squarza, Marco Politi, Roberto Sangermani, Maurizio Cariati, Carla Uggetti
We studied a 9-year-old boy, affected with the Parry-Romberg syndrome, during a period of 32 months, by means of clinical evaluations and neuroradiological magnetic resonance imaging. Over this time we observed a clinical progression of the cutaneous disease without a simultaneous progression of the neurological alterations. Conventional and advanced magnetic resonance imaging techniques showed white matter alterations which proved to be stable during the follow-up.
October 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28714354/is-cerebral-microbleed-prevalence-relevant-as-a-biomarker-in-amnestic-mild-cognitive-impairment-and-mild-alzheimer-s-disease
#17
Ana Gb Rabelo, Camila Vl Teixeira, Thamires Nc Magalhães, Ana Flávia Mk Carletti-Cassani, Augusto Cs Amato Filho, Helena Pg Joaquim, Leda L Talib, Orestes Forlenza, Patrícia Ao Ribeiro, Rodrigo Secolin, Iscia Lopes-Cendes, Fernando Cendes, Marcio Lf Balthazar
Introduction The search for a reliable neuroimaging biomarker in Alzheimer's disease is a matter of intense research. The presence of cerebral microbleeds seems to be a potential biomarker. However, it is not clear if the presence of microbleeds has clinical usefulness to differentiate mild Alzheimer's disease and amnestic mild cognitive impairment from normal aging. We aimed to verify if microbleed prevalence differs among three groups: mild Alzheimer's disease, amnestic mild cognitive impairment due to Alzheimer's disease, and normal controls...
October 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28703635/quantitative-diffusion-tensor-imaging-analysis-does-not-distinguish-pediatric-canines-with-mucopolysaccharidosis-i-from-control-canines
#18
Dana M Middleton, Jonathan Y Li, Steven D Chen, Leonard E White, Patricia I Dickson, N Matthew Ellinwood, James M Provenzale
Purpose We compared fractional anisotropy and radial diffusivity measurements between pediatric canines affected with mucopolysaccharidosis I and pediatric control canines. We hypothesized that lower fractional anisotropy and higher radial diffusivity values, consistent with dysmyelination, would be present in the mucopolysaccharidosis I cohort. Methods Six canine brains, three affected with mucopolysaccharidosis I and three unaffected, were euthanized at 7 weeks and imaged using a 7T small-animal magnetic resonance imaging system...
October 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28699372/hemispheric-asymmetries-in-dorsal-language-pathway-white-matter-tracts-a-magnetic-resonance-imaging-tractography-and-functional-magnetic-resonance-imaging-study
#19
Guilherme Silva, Alberto Citterio
Introduction Previous studies have shown that the arcuate fasciculus has a leftward asymmetry in right-handers that could be correlated with the language lateralisation defined by functional magnetic resonance imaging. Nonetheless, information about the asymmetry of the other fibres that constitute the dorsal language pathway is scarce. Objectives This study investigated the asymmetry of the white-matter tracts involved in the dorsal language pathway through the diffusion tensor imaging (DTI) technique, in relation to language hemispheric dominance determined by task-dependent functional magnetic resonance imaging (fMRI)...
October 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28691570/extra-axial-cerebrospinal-fluid-spaces-in-children-with-benign-external-hydrocephalus-a-case-control-study
#20
Zaamin B Hussain, Amaani B Hussain, Patrick Mitchell
Background The distinction between normal and pathological extra-axial cerebrospinal fluid (CSF) spaces is unclear, with the use of the term benign external hydrocephalus (BEH) not being well defined in clinical practice. This study aimed to establish a distribution of metrics of the subarachnoid space in a population of children diagnosed as normal, and investigate the clinical use of the term BEH. Methods A retrospective case-control study on magnetic resonance image scans was performed on 150 children diagnosed as normal and 10 children diagnosed with BEH...
October 2017: Neuroradiology Journal
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