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Neuroradiology

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https://read.qxmd.com/read/30778621/risk-factors-of-intracranial-hemorrhage-after-mechanical-thrombectomy-of-anterior-circulation-ischemic-stroke
#1
Ulf Neuberger, Philipp Kickingereder, Silvia Schönenberger, Simon Schieber, Peter A Ringleb, Martin Bendszus, Johannes Pfaff, Markus A Möhlenbruch
PURPOSE: Intracranial hemorrhage (ICH) is a potentially severe complication after mechanical thrombectomy (MT). Here, we investigated risk factors for the occurrence of any and symptomatic ICH after MT due to large-vessel occlusion of the anterior circulation. METHODS: Consecutive patients with acute ischemic anterior circulation stroke with large-vessel occlusion undergoing MT were analyzed. ICH was categorized according to the Heidelberg Bleeding Classification...
February 18, 2019: Neuroradiology
https://read.qxmd.com/read/30778620/symptomatic-schmorl-s-nodes-role-of-percutaneous-vertebroplasty-open-study-on-52-patients
#2
Nicolas Amoretti, Sylvain Guinebert, Adrian Kastler, Federico Torre, Olivier Andreani, Pauline Foti, François Cornelis, Nicolas Theumann, Olivier Hauger
PURPOSE: To assess the feasibility and clinical outcome of combined CT and fluoroscopy-guided percutaneous vertebroplasty in the management of painful Schmorl's nodes (SN). METHODS: A prospective study was carried out from January 2014 to January 2016 in 52 consecutive patients. Thirty-two men and 30 women aged between 42 and 88 years old were consecutively included. Technical success was defined as the ability to deposit cement in the subchondral endplate anteriorly, around the SN and posteriorly to the SN, in a cupule-like shape...
February 18, 2019: Neuroradiology
https://read.qxmd.com/read/30770963/foetal-radiation-exposure-caused-by-mechanical-thrombectomy-in-large-vessel-ischaemic-stroke-in-pregnancy
#3
George H Tse, Vartan Balian, Paraskevi Charalampatou, Paul Maliakal, Sanjeev Nayak, Richard Dyde, Sanjoy Nagaraja
PURPOSE: There is overwhelming evidence for the clinical benefits that are derived following mechanical thrombectomy in large-vessel acute ischaemic stroke. The risk of stroke is elevated in pregnancy due to many factors. To date, there have been two reports, totalling five patients, who have undergone mechanical thrombectomy in pregnancy, thus demonstrating the feasibility of the procedure; however, there is no data on the radiation exposure to the mother or foetus related to this therapy...
February 15, 2019: Neuroradiology
https://read.qxmd.com/read/30747269/asymmetric-cavernous-sinus-enlargement-a-novel-finding-in-sturge-weber-syndrome
#4
Luca Pasquini, Domenico Tortora, Francesca Manunza, Maria Camilla Rossi Espagnet, Lorenzo Figà-Talamanca, Giovanni Morana, Corrado Occella, Andrea Rossi, Mariasavina Severino
PURPOSE: Enlargement of deep cerebral veins and choroid plexus engorgement are frequently reported in Sturge-Weber syndrome. We aim to describe cavernous sinus involvement in patients with this syndrome and to identify possible clinical-neuroimaging correlations. METHODS: Sixty patients with Sturge-Weber syndrome (31 females, mean age 4.5 years) and 120 age/sex-matched controls were included in this retrospective study. We performed a visual analysis to identify patients with asymmetric cavernous sinus enlargement...
February 12, 2019: Neuroradiology
https://read.qxmd.com/read/30747268/neuroradiological-and-clinical-features-in-ophthalmoplegia
#5
REVIEW
Stefan Weidauer, Christian Hofmann, Marlies Wagner, Elke Hattingen
PURPOSE: Especially in acute onset of ophthalmoplegia, efficient neuroradiological evaluation is necessary to assist differential diagnosis, clinical course, and treatment options. METHODS: Different manifestations of ophthalmoplegia are explained and illustrated by characteristic neuroradiological and clinical findings. RESULTS: To present those ophthalmoplegic disorders in a clear manner, this review refers to different neuroanatomical structures and compartments...
February 12, 2019: Neuroradiology
https://read.qxmd.com/read/30737537/comparative-analysis-of-the-intervertebral-disc-signal-and-annulus-changes-between-immediate-and-1-year-postoperative-mri-after-transforaminal-endoscopic-lumbar-discectomy-and-annuloplasty
#6
Akaworn Mahatthanatrakul, Vit Kotheeranurak, Guang-Xun Lin, Jung-Woo Hur, Ho Jung Chung, Jin-Sung Kim
PURPOSE: Postoperative magnetic resonance imaging (MRI) after microdiscectomy for lumbar disc herniation frequently shows spinal canal compression by the remaining annulus, which gradually decreases over time. Transforaminal endoscopic lumbar discectomy (TELD) can remove the herniation with minimal trauma to surrounding soft tissue. We aim to identify this remodeling of annulus fibrosus and the change of disc signal after TELD. METHODS: We reviewed patients who underwent TELD...
February 8, 2019: Neuroradiology
https://read.qxmd.com/read/30725121/acute-ischemic-stroke-patients-with-diffusion-weighted-imaging-alberta-stroke-program-early-computed-tomography-score-%C3%A2-5-can-benefit-from-endovascular-treatment-a-single-center-experience-and-literature-review
#7
Kangping Song, Min Guan, Wenxian Li, Zhen Jing, Xiaomei Xie, Changzheng Shi, Jianye Liang, Hongyu Qiao, Li'an Huang
PURPOSE: The recommendation strength of the guidelines for mechanical thrombectomy among patients with large pre-treatment core infarct is weak. We evaluated the safety and outcome of endovascular treatment for acute ischemic stroke with diffusion-weighted imaging-Alberta Stroke Program Early Computed Tomography Score (DWI-ASPECTS) ≤ 5. METHODS: Data on acute ischemic stroke patients with DWI-ASPECTS ≤ 5 who underwent endovascular treatment within 6 h, or presented an arterial spin labeling-DWI (ASL-DWI) mismatch within 12 h, at our center were retrospectively collected...
February 6, 2019: Neuroradiology
https://read.qxmd.com/read/30719545/the-value-of-four-stage-vestibular-hydrops-grading-and-asymmetric-perilymphatic-enhancement-in-the-diagnosis-of-meni%C3%A3-re-s-disease-on-mri
#8
Anja Bernaerts, Robby Vanspauwen, Cathérine Blaivie, Joost van Dinther, Andrzej Zarowski, Floris L Wuyts, Stephanie Vanden Bossche, Erwin Offeciers, Jan W Casselman, Bert De Foer
PURPOSE: There is still a clinical-radiologic discrepancy in patients with Menière's disease (MD). Therefore, the purpose of this study was to investigate the reliability of current MRI endolymphatic hydrops (EH) criteria according to Baráth in a larger study population and the clinical utility of new imaging signs such as a supplementary fourth low-grade vestibular EH and the degree of perilymphatic enhancement (PE) in patients with Menière's disease (MD). METHODS: This retrospective study included 148 patients with probable or definite MD according to the 2015 American Academy of Otolaryngology, Head and Neck Surgery criteria who underwent a 4-h delayed intravenous Gd-enhanced 3D-FLAIR MRI between January 2015 and December 2016...
February 5, 2019: Neuroradiology
https://read.qxmd.com/read/30719544/ct-perfusion-hypervolemia-brain-ischemia-or-stroke-mimic
#9
LETTER
Anna Koopman, Frank-Erik de Leeuw, Frederick Meijer
No abstract text is available yet for this article.
February 4, 2019: Neuroradiology
https://read.qxmd.com/read/30712140/embolization-of-brain-arteriovenous-malformations-with-the-diluted-onyx-technique-initial-experience
#10
Haowen Xu, Li Wang, Sheng Guan, Dongdong Li, Tao Quan
PURPOSE: Insufficient nidus occlusion is a matter of great concern to routine Onyx embolization of brain arteriovenous malformations (AVMs). This paper described an efficient method which using the diluted Onyx embolization technique to treat brain AVM. METHODS: The diluted Onyx technique was performed in a series of 15 patients with brain AVMs (10 males, 5 females; age range, 11-44 years). It consists of initial embolization with routine Onyx-18, followed by the diluted Onyx (1...
February 2, 2019: Neuroradiology
https://read.qxmd.com/read/30712139/dynamic-susceptibility-contrast-and-diffusion-mr-imaging-identify-oligodendroglioma-as-defined-by-the-2016-who-classification-for-brain-tumors-histogram-analysis-approach
#11
Anna Latysheva, Kyrre Eeg Emblem, Petter Brandal, Einar Osland Vik-Mo, Jens Pahnke, Kjetil Røysland, John K Hald, Andrés Server
PURPOSE: According to the revised World Health Organization (WHO) Classification of Tumors of the Central Nervous System (CNS) of 2016, oligodendrogliomas are now defined primarily by a specific molecular signature (presence of IDH mutation and 1p19q codeletion). The purpose of our study was to assess the value of dynamic susceptibility contrast MR imaging (DSC-MRI) and diffusion-weighted imaging (DWI) to characterize oligodendrogliomas and to distinguish them from astrocytomas. METHODS: Seventy-one adult patients with untreated WHO grade II and grade III diffuse infiltrating gliomas and known 1p/19q codeletion status were retrospectively identified and analyzed using relative cerebral blood volume (rCBV) and apparent diffusion coefficient (ADC) maps based on whole-tumor volume histograms...
February 2, 2019: Neuroradiology
https://read.qxmd.com/read/30712138/reduced-axial-diffusivity-and-increased-mode-and-t2-signals-in-cerebral-white-matter-of-chronic-obstructive-pulmonary-disease-using-tract-based-spatial-statistics
#12
Sekwang Lee, Sung-Bom Pyun, Woo-Suk Tae
PURPOSE: Chronic obstructive pulmonary disease (COPD) is considered to be a multi-systemic disease involving pathological changes in the brain. This study investigated how diffusion tensor imaging (DTI) parameters in patients with non-hypoxemic COPD differ from those in controls. Moreover, we tried to examine whether the mode of anisotropy (MO) reflects early changes in white matter (WM) integrity in COPD. METHODS: DT images were obtained from 13 male COPD patients and 13 age- and sex-matched healthy controls...
February 2, 2019: Neuroradiology
https://read.qxmd.com/read/30710184/gadolinium-retention-in-gliomas-and-adjacent-normal-brain-tissue-association-with-tumor-contrast-enhancement-and-linear-macrocyclic-agents
#13
Aida Kiviniemi, Maria Gardberg, Paul Ek, Janek Frantzén, Johan Bobacka, Heikki Minn
PURPOSE: To quantitate gadolinium deposits in gliomas and adjacent normal brain specimens, and to evaluate their association with tumor contrast enhancement and the type of gadolinium-based contrast agent (GBCA) used. METHODS: A total of 69 patients with primary glioma who underwent contrast-enhanced magnetic resonance imaging (MRI) prior to surgery were included in this retrospective study. Gadolinium was measured from histologically viable tumor, normal brain, and necrosis within the sample, when available, using inductively coupled plasma mass spectrometry (ICP-MS)...
February 2, 2019: Neuroradiology
https://read.qxmd.com/read/30693411/motor-cortex-hypointensity-on-susceptibility-weighted-imaging-a-potential-imaging-marker-of-iron-accumulation-in-patients-with-cognitive-impairment
#14
Mina Park, Yeonsil Moon, Seol-Heui Han, Won-Jin Moon
PURPOSE: To assess the prevalence and characteristics of motor cortex hypointensity on 3-T susceptibility-weighted imaging (SWI) in patients with cognitive impairment and examine its clinical significance. METHODS: The institutional review board approved this retrospective study and waived the requirement for informed consent. A total of 127 patients with a clinical diagnosis of probable Alzheimer's disease (AD) (n = 32) or mild cognitive impairment (MCI) (n = 95) and 127 age- and sex-matched control subjects underwent 3-T brain magnetic resonance imaging...
January 28, 2019: Neuroradiology
https://read.qxmd.com/read/30693410/micro-computed-tomography-a-new-diagnostic-tool-in-postmortem-assessment-of-brain-anatomy-in-small-fetuses
#15
Sophie Lombardi, Elisa Scola, Davide Ippolito, Vanessa Zambelli, Giovanni Botta, Serena Cuttin, Fabio Triulzi, Claudio M Lombardi
PURPOSE: The aim of our study was to evaluate the postmortem micro-CT anatomy of early fetal human fetal brains, either in situ or isolated. METHODS: We studied 12 ex vivo specimens, 9 whole human fetuses (9-18 GW), and 3 isolated samples (16-26 GW). Specimens were fixed in formalin, then immersed in Lugol solution. Images were evaluated by two neuroradiologists. The depiction of CNS structures was defined based on the comparison between micro-CT images and a reference histologic anatomical Atlas of human brain development...
January 28, 2019: Neuroradiology
https://read.qxmd.com/read/30693409/radiological-scales-predicting-delayed-cerebral-ischemia-in-subarachnoid-hemorrhage-systematic-review-and-meta-analysis
#16
REVIEW
Wessel E van der Steen, Eva L Leemans, René van den Berg, Yvo B W E M Roos, Henk A Marquering, Dagmar Verbaan, Charles B L M Majoie
PURPOSE: Delayed cerebral ischemia (DCI) is a severe complication of aneurysmal subarachnoid hemorrhage (aSAH). The extent of subarachnoid blood is a strong predictor of DCI and is frequently estimated with the Fisher scale, modified Fisher scale, or Hijdra sum score. It is unclear which scale has the strongest association with clinical DCI. To evaluate this, we performed a systematic review of the literature. METHODS: We performed a MEDLINE and EMBASE search from 1980 to 20th of June 2017...
January 28, 2019: Neuroradiology
https://read.qxmd.com/read/30693408/micro-ct-myelography-using-contrast-enhanced-digital-subtraction-feasibility-and-initial-results-in-healthy-rats
#17
Pablo C Zambrano-Rodríguez, Sirio Bolaños-Puchet, Horacio J Reyes-Alva, Luis E García-Orozco, Mario E Romero-Piña, Angelina Martinez-Cruz, Gabriel Guízar-Sahagún, Luis A Medina
PURPOSE: The spinal subarachnoid space (SSAS) is vital for neural performance. Although models of spinal diseases and trauma are used frequently, no methods exist to obtain high-resolution myelograms in rodents. Thereby, our aim was to explore the feasibility of obtaining high-resolution micro-CT myelograms of rats by contrast-enhanced dual-energy (DE) and single-energy (SE) digital subtraction. METHODS: Micro-CT contrast-enhanced DE and SE imaging protocols were implemented with live adult rats (total of 18 animals)...
January 28, 2019: Neuroradiology
https://read.qxmd.com/read/30684115/mri-findings-in-parinaud-s-syndrome-a-closer-look-at-pineal-masses
#18
Amrita-Amanda D Vuppala, Nanki Hura, Sadaf Sahraian, Elham Beheshtian, Neil R Miller, David M Yousem
PURPOSE: The association between MRI findings in patients with pineal lesions and the presence or absence of Parinaud's syndrome (PS) remains poorly described. We sought to better understand what MRI characteristics of a pineal lesion make PS more likely. Can these features predict prognosis for clinical resolution? Based on the anatomical relationship of the pineal gland and midbrain, we hypothesized that the degree of midbrain injury by a pineal mass as assessed by abutment, displacement, or intrinsic midbrain signal abnormality (IMSA) may predict PS...
January 25, 2019: Neuroradiology
https://read.qxmd.com/read/30684114/dual-energy-ct-angiography-derived-virtual-non-contrast-images-for-follow-up-of-patients-with-surgically-clipped-aneurysms-a-retrospective-study
#19
Su Young Yun, Young Jin Heo, Hae Woong Jeong, Jin Wook Baek, Hye Jung Choo, Gi Won Shin, Sung Tae Kim, Young Gyun Jeong, Ji Young Lee, Hyun Seok Jung
PURPOSE: To evaluate the diagnostic performance, image quality, artifacts, and radiation doses of virtual non-contrast (VNC) images, relative to true non-contrast (TNC) images, in patients with surgically clipped aneurysms. METHODS: Seventy-six patients who underwent unenhanced computed tomography (CT) and dual-energy (DE)-CT angiography after surgical clipping of 85 intracranial aneurysms were included in the study. Diagnostic performances of VNC and TNC images were compared with respect to sensitivity, specificity, and positive and negative predictive values...
January 25, 2019: Neuroradiology
https://read.qxmd.com/read/30684113/comparison-of-multi-shot-and-single-shot-echo-planar-diffusion-tensor-techniques-for-the-optic-pathway-in-patients-with-neurofibromatosis-type-1
#20
Chang Y Ho, Rachael Deardorff, Stephen F Kralik, John D West, Yu-Chien Wu, Chie-Schin Shih
PURPOSE: Diffusion tensor imaging (DTI) may be helpful in assessing optic pathway integrity as a marker for treatment in neurofibromatosis type 1 (NF1) patients with optic gliomas (OG). However, susceptibility artifacts are common in typical single-shot echo planar imaging (ssDTI). A readout-segmented multi-shot EPI technique (rsDTI) was utilized to minimize susceptibility distortions of the skull base and improve quantitative metrics. METHODS: Healthy controls, children with NF1 without OG, and NF1 with OG ± visual symptoms were included...
January 25, 2019: Neuroradiology
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