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Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging

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https://www.readbyqxmd.com/read/27896893/an-acute-disseminated-encephalomyelitis-like-illness-in-the-elderly-neuroimaging-and-neuropathology-findings
#1
Ulrike W Kaunzner, Elliott Salamon, Elena Pentsova, Marc Rosenblum, Sasan Karimi, Nancy Nealon, Ehud Lavi, Dara G Jamieson
INTRODUCTION: Acute disseminated encephalomyelitis (ADEM) is a rare demyelinating disease of the central nervous system (CNS) that classically occurs in children and adolescents. It characteristically presents with acute inflammation, resulting in demyelination, often following an infectious disease. ADEM has been described in adult patients, but the incidence in the adult and especially elderly population is low. CASES: We describe five older adults (age 57 to 85) who presented with acute neurological symptoms...
November 29, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27897360/central-atrophy-early-in-multiple-sclerosis-third-ventricle-volumetry-versus-planimetry
#2
Theodor Lutz, Barbara Bellenberg, Ruth Schneider, Florian Weiler, Odo Köster, Carsten Lukas
BACKGROUND AND PURPOSE: Cerebral atrophy has been suggested to be a reliable magnetic resonance imaging (MRI) predictor of subsequent disability in all stages of multiple sclerosis (MS). However, no accepted methodology for routine clinical use exists to date. We sought an easy to apply and fast technique to evaluate cerebral ventricular volume in patients with MS with similar accuracy as a semiautomatic volumetric method. METHODS: The study included 104 patients, 61 diagnosed with MS and 43 with clinically isolated syndrome...
November 28, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27892636/impaired-retinal-vasoreactivity-an-early-marker-of-stroke-risk-in-diabetes
#3
Kerstin Bettermann, Julia Slocomb, Vikram Shivkumar, David Quillen, Thomas W Gardner, Mary E Lott
Diabetes is a common cause of small vessel disease leading to stroke and vascular dementia. While the function and structure of large cerebral vessels can be easily studied, the brain's microvasculature remains difficult to assess. Previous studies have demonstrated that structural changes in the retinal vessel architecture predict stroke risk, but these changes occur at late disease stages. Our goal was to examine whether retinal vascular status can predict cerebral small vessel dysfunction during early stages of diabetes...
November 28, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27878926/the-effects-of-dwi-infarct-lesion-volume-on-dwi-flair-mismatch-is-there-a-need-for-size-stratification
#4
Seyedmehdi Payabvash, Shayandokht Taleb, John C Benson, Jeffrey B Rykken, Mark C Oswood, Alexander M McKinney, Benjamin Hoffman
BACKGROUND: The lack of fluid-attenuated inversion-recovery (FLAIR) hyperintensity in areas of diffusion-weighted imaging (DWI) high signal, or DWI-FLAIR mismatch, is a potential imaging biomarker for timing of stroke onset. We aimed to determine the effects of DWI infarct lesion volume on DWI-FLAIR mismatch and its accuracy for identification of strokes within intravenous (IV) the thrombolytic therapy window. METHODS: Acute ischemic stroke patients with magnetic resonance imaging scan within 12 hours of witnessed stroke were included...
November 23, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27859975/population-level-correction-of-systematic-motion-artifacts-in-fmri-in-patients-with-ischemic-stroke
#5
Csaba Aranyi, Gábor Opposits, Marianna Nagy, Ervin Berényi, Csilla Vér, László Csiba, Péter Katona, Tamás Spisák, Miklós Emri
BACKGROUND: The aim of this study was to reveal potential sources of systematic motion artifacts in stroke functional magnetic resonance imaging (fMRI) focusing on those causing stimulus-correlated motion on the individual-level and separate the motion effect on the fMRI signal changing from the activation-induced alteration at population level. METHODS: Eleven ischemic stroke patients were examined by fMRI. The fMRI paradigm was based on passive ankle movement on both the healthy and the paretic leg's side...
November 17, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27862614/transorbital-sonography-and-visual-outcome-for-the-diagnosis-and-monitoring-of-optic-neuritis
#6
Piergiorgio Lochner, Maurizio A Leone, Klaus Fassbender, Roberto Cantello, Lorenzo Coppo, Raffaele Nardone, Gianni Zorzi, Martin Lesmeister, Cristoforo Comi, Francesco Brigo
BACKGROUND AND PURPOSE: Transorbital sonography (TOS) is a promising tool to support the clinical diagnosis of optic neuritis (ON) by showing thickening of optic nerve. In this study, we aimed to define its specific role in follow-up of ON patients. METHODS: We measured ultrasonography parameters and visual acuity (VA) at presentation and after 1 year in 45 patients with newly diagnosed ON. Two vascular sonographers used B-mode TOS to evaluate mean optic nerve diameter (OND) and optic nerve sheath diameter (ONSD)...
November 13, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27862549/diffusion-tensor-imaging-defined-sulcal-enlargement-is-related-to-cognitive-impairment-in-multiple-sclerosis
#7
Zafer Keser, Khader M Hasan, Benson Mwangi, Refaat E Gabr, Flavia M Nelson
BACKGROUND AND PURPOSE: Cerebrospinal fluid (CSF) in the brain can be compartmentalized into two main divisions: ventricular CSF and subarachnoid space (sulcal CSF). Changes in CSF volumetry are seen in many neurological conditions including multiple sclerosis (MS) and found to correlate with clinical outcomes. We aimed to test the relation between the volumetry of sulcal and ventricular CSF and cognitive impairment (CI) based on the minimal assessment of cognitive function in MS (MACFIMS) in patients with MS...
November 7, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27805298/telestroke-imaging-a-review
#8
Fahad J Laghari, Maxim D Hammer
The use of telecommunications technology to provide the healthcare services, telemedicine, has been in use since the 1860s. The use of technology has ranged from providing medical care to far-off places during wartimes to monitoring physiological measurements of astronauts in space. Since the 1990s, reports have been published on diagnoses of neurological diseases with the use of video links. Studies confirm that the neurological examinations, including the National Institutes of Health Stroke Scale, performed during teleneurology are dependable...
November 2, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27805291/rethinking-the-use-of-neutral-faces-as-a-baseline-in-fmri-neuroimaging-studies-of-axis-i-psychiatric-disorders
#9
Megan M Filkowski, Brian W Haas
Major Axis-I disorders including major depressive disorder (MDD), bipolar disorder (BD), anxiety disorder, and schizophrenia are associated with a host of aberrations in the way social stimuli are processed. Face perception tasks are often used in neuroimaging research of emotion processing in both healthy and patient populations, and to date, there exists a mounting body of evidence, both behavioral and within the brain, indicating that emotional faces compared to neutral faces are processed abnormally by those with Axis-I disorders relative to healthy control (HC) groups...
November 2, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27653945/thrombolysis-in-real-time-demonstration-of-revascularization-with-intravenous-thrombolysis-therapy-in-the-ct-scanner
#10
Jessica Tan, Aimee Aysenne, Vineeta Singh
BACKGROUND AND PURPOSE: Administration of intravenous tissue plasminogen activator (tPA) in the computed tomography (CT) scanner has been recently implemented at our institution, as a means to decrease door-to-needle time. This change in protocol provided us a unique opportunity to visualize imaging signs of early recanalization. METHODS: We evaluated patients who presented with acute ischemic stroke both before and after a change in protocol for intravenous tPA administration...
September 21, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27634732/cortical-thickness-and-episodic-memory-impairment-in-systemic-lupus-erythematosus
#11
Bernardo Canedo Bizzo, Tiago Arruda Sanchez, Gustavo Tukamoto, Nicolle Zimmermann, Tania Maria Netto, Emerson Leandro Gasparetto
BACKGROUND AND PURPOSE: The purpose of this study was to investigate differences in brain cortical thickness of systemic lupus erythematosus (SLE) patients with and without episodic memory impairment and healthy controls. METHODS: We studied 51 patients divided in 2 groups (SLE with episodic memory deficit, n = 17; SLE without episodic memory deficit, n = 34) by the Rey Auditory Verbal Learning Test and 34 healthy controls. Groups were paired based on sex, age, education, Mini-Mental State Examination score, and accumulation of disease burden...
September 16, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27634620/differential-impact-of-multiple-sclerosis-on-cortical-and-deep-gray-matter-structures-in-african-americans-and-caucasian-americans
#12
Mais Al-Kawaz, Elizabeth Monohan, Eric Morris, Jai S Perumal, Nancy Nealon, Timothy Vartanian, Susan A Gauthier
BACKGROUND: African Americans with multiple sclerosis (AAwMS) have different disease phenotypes when compared to Caucasians Americans with MS (CAwMS). The pathologic basis of this difference in disease presentation is unknown. METHODS: Fifty-Four AAwMS and 54 CAwMS were appropriately matched for age, gender, treatment duration, and disease duration. FreeSurfer was used to segment brain white matter and gray matter from T1 images and compute thalamic volume. Regional cortical thickness was calculated using QDEC...
September 16, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27623192/poststroke-cognitive-decline-is-independent-of-longitudinal-changes-in-cerebral-hemodynamics-parameters
#13
Ma Serrie Platero Suministrado, Esther Wan Yee Shuang, Jing Xu, Hock Luen Teoh, Bernard Poon-Lap Chan, Narayanaswamy Venketasubramanian, Raymond Chee Seong Seet, Christopher Li-Hsian Chen, Boon Seng Wong, Vijay Kumar Sharma, YanHong Dong
BACKGROUND: Poststroke vascular cognitive impairment is highly prevalent with significant functional consequences. However, reliable biomarkers for early prediction of cognitive decline after acute ischemic stroke (AIS) are not well established. Although parenchymal imaging in patients with AIS and transient ischemic attack (TIA) may predict the resultant cognitive impairment, it may not explain the progressive deterioration after the index event. We postulated that longitudinal changes in cerebral hemodynamic parameters may influence the cognitive performance after a cerebrovascular event...
September 13, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27606502/non-sedated-rapid-volumetric-proton-density-mri-predicts-neonatal-brachial-plexus-birth-palsy-functional-outcome
#14
Peter Y Shen, Anna E Nidecker, Ethan A Neufeld, Paul S Lee, Michelle A James, Andrea S Bauer
BACKGROUND AND PURPOSE: The current prognostic biomarker of functional outcome in brachial plexus birth palsy is serial clinical examination throughout the first 6 months of age. This can delay surgical treatment and prolong parental anxiety in neonates who will recover spontaneously. A potentially superior biomarker is a volumetric proton density MRI performed at clinical presentation and within the first 12 weeks of life, providing a high spatial and contrast resolution examination in 4 minutes...
September 8, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27601075/correcting-for-frequency-drift-in-clinical-brain-mr-spectroscopy
#15
Benjamin C Rowland, Huijun Liao, Fatah Adan, Laura Mariano, John Irvine, Alexander P Lin
PURPOSE: Averaging multiple repetitions to improve signal-to-noise ratio is common practice in magnetic resonance spectroscopy (MRS). However, temporal variations in scanner B0 due to motion or gradient heating may cause spectra to become misaligned, broadening and distorting peaks and impacting on processing and quantification. We present a comparison using in vivo data of different methods for correcting these errors. METHODS: Three different correction methods were applied to 53 brain scans: residual water peak alignment, creatine fitting, and spectral registration...
September 7, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27128445/assessment-of-glioma-response-to-radiotherapy-using-multiple-mri-biomarkers-with-manual-and-semiautomated-segmentation-algorithms
#16
Yang Yu, Dong-Hoon Lee, Shin-Lei Peng, Kai Zhang, Yi Zhang, Shanshan Jiang, Xuna Zhao, Hye-Young Heo, Xiangyang Wang, Min Chen, Hanzhang Lu, Haiyun Li, Jinyuan Zhou
BACKGROUND AND PURPOSE: Multimodality magnetic resonance imaging (MRI) can provide complementary information in the assessment of brain tumors. We aimed to segment tumor in amide proton transfer-weighted (APTw) images and to investigate multiparametric MRI biomarkers for the assessment of glioma response to radiotherapy. For tumor extraction, we evaluated a semiautomated segmentation method based on region of interest (ROI) results by comparing it with the manual segmentation method. METHODS: Thirteen nude rats injected with U87 tumor cells were irradiated by an 8-Gy radiation dose...
November 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27593522/topographic-assessment-of-acute-ischemic-changes-for-prognostication-of-anterior-circulation-stroke
#17
Seyedmehdi Payabvash, Siamak Noorbaloochi, Adnan I Qureshi
BACKGROUND: The location of acute ischemic infarct can affect the clinical outcome of stroke patients. We aimed to develop a prognostic tool based on the topographic distribution of early ischemic changes on admission computed tomography (CT) scans. METHODS: Using the albumin in acute stroke (ALIAS) trials dataset, patients with anterior circulation stroke were included for analysis. A 3-month modified Rankin scale (mRs) score > 2 defined disability/death; and ≤2 defined favorable outcome...
September 4, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27518374/abstracts
#18
(no author information available yet)
No abstract text is available yet for this article.
September 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27350284/the-many-faces-of-cerebral-developmental-venous-anomaly-and-its-mimicks-spectrum-of-imaging-findings
#19
Seyed Ali Nabavizadeh, Alexander C Mamourian, Arastoo Vossough, Laurie A Loevner, Robert Hurst
Developmental venous anomalies (DVAs) are the most common cerebral vascular malformations and are usually found incidentally on neuroimaging studies. Despite the benign nature of DVAs, occasionally, they can be symptomatic. The objective of this article is to review the spectrum of imaging findings of DVAs on conventional and advanced imaging studies. In addition, neuroimaging findings of symptomatic DVAs as well as imaging mimicks will also be described to assist in the approach to differential diagnosis.
September 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27301069/subclavian-steal-syndrome-with-or-without-arterial-stenosis-a-review
#20
REVIEW
Odysseas Kargiotis, Simos Siahos, Apostolos Safouris, Agisilaos Feleskouras, Georgios Magoufis, Georgios Tsivgoulis
The subclavian-vertebral artery steal syndrome (SSS) is the hemodynamic phenomenon of blood flow reversal in the vertebral artery due to significant stenosis or occlusion of the proximal subclavian artery or the innominate artery. Occasionally, SSS is diagnosed in patients not harboring arterial stenosis. With the exception of arterial congenital malformations, the limited case reports of SSS with intact subclavian artery are attributed to dialysis arteriovenous fistulas (AVFs). Interestingly, these cases are more frequently symptomatic than those with the classical atherosclerotic SSS forms...
September 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
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