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AJNR. American Journal of Neuroradiology

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https://www.readbyqxmd.com/read/28522671/regarding-differences-in-hemodynamics-and-rupture-rate-of-aneurysms-at-the-bifurcation-of-the-basilar-and-internal-carotid-arteries
#1
LETTER
W Li, Y Wang
No abstract text is available yet for this article.
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522670/reply
#2
LETTER
R Doddasomayajula, C Putman, J R Cebral
No abstract text is available yet for this article.
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522669/liquid-embolic-agents-for-endovascular-embolization-evaluation-of-an-established-onyx-and-a-novel-phil-embolic-agent-in-an-in-vitro-avm-model
#3
D F Vollherbst, C M Sommer, C Ulfert, J Pfaff, M Bendszus, M A Möhlenbruch
BACKGROUND AND PURPOSE: Embolization plays a key role in the treatment of arteriovenous malformations. The aim of this study was to evaluate an established (Onyx) and a novel (precipitating hydrophobic injectable liquid [PHIL]) liquid embolic agent in an in vitro AVM model. MATERIALS AND METHODS: An AVM model was integrated into a circuit system. The artificial nidus (subdivided into 28 honeycomb-like sections) was embolized with Onyx 18 (group Onyx; n = 8) or PHIL 25 (group PHIL; n = 8) with different pause times between the injections (30 and 60 seconds, n = 4 per study group) by using a 1...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522668/treatment-of-tandem-internal-carotid-artery-aneurysms-using-a-single-pipeline-embolization-device-evaluation-of-safety-and-efficacy
#4
N Adeeb, J M Moore, C J Griessenauer, P M Foreman, H Shallwani, A A Dmytriw, H Shakir, A H Siddiqui, E I Levy, J M Davies, M R Harrigan, A J Thomas, C S Ogilvy
BACKGROUND AND PURPOSE: Tandem aneurysms are defined as multiple aneurysms located in close proximity on the same parent vessel. Endovascular treatment of these aneurysms has rarely been reported. Our aim was to evaluate the safety and efficacy of a single Pipeline Embolization Device for the treatment of tandem aneurysms of the internal carotid artery. MATERIALS AND METHODS: A retrospective analysis of consecutive aneurysms treated with the Pipeline Embolization Device between 2009 and 2016 at 3 institutions in the United States was performed...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522667/baseline-survey-of-the-neuroradiology-work-environment-in-the-united-states-with-reported-trends-in-clinical-work-nonclinical-work-perceptions-of-trainees-and-burnout-metrics
#5
J Y Chen, F J Lexa
BACKGROUND AND PURPOSE: Neuroradiologists have faced continuously increasing clinical workloads. Our aim was to establish and report a baseline survey of the current neuroradiology work environment in the United States and of experiential changes in recent years. MATERIALS AND METHODS: A voluntary survey was sent to practicing and out-of-training members of the American Society of Neuroradiology in the United States. Selected measures included workday volume and length, burnout symptoms, participation in academic and practice-building duties; effects on perceived interpretation quality, communication of abnormal results, and consideration of early retirement or career changes, among others...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522666/discrimination-between-glioma-grades-ii-and-iii-using-dynamic-susceptibility-perfusion-mri-a-meta-analysis
#6
Anna F Delgado, Alberto F Delgado
BACKGROUND: DSC perfusion has been evaluated in the discrimination between low-grade and high-grade glioma but the diagnostic potential to discriminate beween glioma grades II and III remains unclear. PURPOSE: Our aim was to evaluate the diagnostic accuracy of relative maximal CBV from DSC perfusion MR imaging to discriminate glioma grades II and III. DATA SOURCES: A systematic literature search was performed in PubMed/MEDLINE, Embase, Web of Science, and ClinicalTrials...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522665/nonmicrocephalic-infants-with-congenital-zika-syndrome-suspected-only-after-neuroimaging-evaluation-compared-with-those-with-microcephaly-at-birth-and-postnatally-how-large-is-the-zika-virus-iceberg
#7
M F V V Aragao, A C Holanda, A M Brainer-Lima, N C L Petribu, M Castillo, V van der Linden, S C Serpa, A G Tenório, P T C Travassos, M T Cordeiro, C Sarteschi, M M Valenca, A Costello
BACKGROUND AND PURPOSE: Although microcephaly is the most prominent feature of congenital Zika syndrome, a spectrum with less severe cases is starting to be recognized. Our aim was to review neuroimaging of infants to detect cases without microcephaly and compare them with those with microcephaly. MATERIALS AND METHODS: We retrospectively evaluated all neuroimaging (MR imaging/CT) of infants 1 year of age or younger. Patients with congenital Zika syndrome were divided into those with microcephaly at birth, postnatal microcephaly, and without microcephaly...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522664/non-contrast-enhanced-silent-scan-mr-angiography-of-intracranial-anterior-circulation-aneurysms-treated-with-a-low-profile-visualized-intraluminal-support-device
#8
N Takano, M Suzuki, R Irie, M Yamamoto, K Teranishi, K Yatomi, N Hamasaki, K K Kumamaru, M Hori, H Oishi, S Aoki
BACKGROUND AND PURPOSE: The Low-Profile Visualized Intraluminal Support Device comprises a small-cell nitinol structure and a single-wire braided stent that provides greater metal coverage than previously reported intracranial stents, as well as assumed strong susceptibility artifacts. This study aimed to assess the benefits of non-contrast-enhanced MRA by using a Silent Scan (Silent MRA) for intracranial anterior circulation aneurysms treated with Low-Profile Visualized Intraluminal Support Device stents...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522663/the-use-of-noncontrast-quantitative-mri-to-detect-gadolinium-enhancing-multiple-sclerosis-brain-lesions-a-systematic-review-and-meta-analysis
#9
A Gupta, K Al-Dasuqi, F Xia, G Askin, Y Zhao, D Delgado, Y Wang
BACKGROUND: Concerns have arisen about the long-term health effects of repeat gadolinium injections in patients with multiple sclerosis and the incomplete characterization of MS lesion pathophysiology that results from relying on enhancement characteristics alone. PURPOSE: Our aim was to perform a systematic review and meta-analysis analyzing whether noncontrast MR imaging biomarkers can distinguish enhancing and nonenhancing brain MS lesions. DATA SOURCES: Our sources were Ovid MEDLINE, Ovid Embase, and the Cochrane data base from inception to August 2016...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522662/apparent-diffusion-coefficient-value-changes-and-clinical-correlation-in-90-cases-of-cytomegalovirus-infected-fetuses-with-unremarkable-fetal-mri-results
#10
D Kotovich, J S B Guedalia, C Hoffmann, G Sze, A Eisenkraft, G Yaniv
BACKGROUND AND PURPOSE: Cytomegalovirus is the leading intrauterine infection. Fetal MR imaging is an accepted tool for fetal brain evaluation, yet it still lacks the ability to accurately predict the extent of the neurodevelopmental impairment, especially in fetal MR imaging scans with unremarkable findings. Our hypothesis was that intrauterine cytomegalovirus infection causes diffusional changes in fetal brains and that those changes may correlate with the severity of neurodevelopmental deficiencies...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522661/quantitative-folding-pattern-analysis-of-early-primary-sulci-in-human-fetuses-with-brain-abnormalities
#11
K Im, A Guimaraes, Y Kim, E Cottrill, B Gagoski, C Rollins, C Ortinau, E Yang, P E Grant
BACKGROUND AND PURPOSE: Aberrant gyral folding is a key feature in the diagnosis of many cerebral malformations. However, in fetal life, it is particularly challenging to confidently diagnose aberrant folding because of the rapid spatiotemporal changes of gyral development. Currently, there is no resource to measure how an individual fetal brain compares with normal spatiotemporal variations. In this study, we assessed the potential for automatic analysis of early sulcal patterns to detect individual fetal brains with cerebral abnormalities...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522660/the-qualified-clinical-data-registry-a-pathway-to-success-within-macra
#12
M M Chen, A B Rosenkrantz, G N Nicola, E Silva, G McGinty, L Manchikanti, J A Hirsch
No abstract text is available yet for this article.
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28522659/validation-of-an-mri-brain-injury-and-growth-scoring-system-in-very-preterm-infants-scanned-at-29-to-35-week-postmenstrual-age
#13
J M George, S Fiori, J Fripp, X K Pannek, X J Bursle, X R X Moldrich, X A Guzzetta, X A Coulthard, X R S Ware, X S E Rose, X P B Colditz, X R N Boyd
BACKGROUND AND PURPOSE: The diagnostic and prognostic potential of brain MR imaging before term-equivalent age is limited until valid MR imaging scoring systems are available. This study aimed to validate an MR imaging scoring system of brain injury and impaired growth for use at 29 to 35 weeks postmenstrual age in infants born at <31 weeks gestational age. MATERIALS AND METHODS: Eighty-three infants in a prospective cohort study underwent early 3T MR imaging between 29 and 35 weeks' postmenstrual age (mean, 32(+2) ± 1(+3) weeks; 49 males, born at median gestation of 28(+4) weeks; range, 23(+6)-30(+6) weeks; mean birthweight, 1068 ± 312 g)...
May 18, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28495950/carotid-bulb-webs-as-a-cause-of-cryptogenic-ischemic-stroke
#14
P I Sajedi, J N Gonzalez, C A Cronin, T Kouo, A Steven, J Zhuo, O Thompson, R Castellani, S J Kittner, D Gandhi, P Raghavan
BACKGROUND AND PURPOSE: Carotid webs are intraluminal shelf-like filling defects at the carotid bulb with recently recognized implications in patients with recurrent ischemic stroke. We sought to determine whether carotid webs are an under-recognized cause of "cryptogenic" ischemic stroke and to estimate their prevalence in the general population. MATERIALS AND METHODS: A retrospective review of neck CTA studies in young patients with cryptogenic stroke over the past 6 years (n = 33) was performed to determine the prevalence of carotid webs compared with a control group of patients who received neck CTA studies for reasons other than ischemic stroke (n = 63)...
May 11, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28495949/the-central-bright-spot-sign-a-potential-new-mr-imaging-sign-for-the-early-diagnosis-of-anterior-ischemic-optic-neuropathy-due-to-giant-cell-arteritis
#15
P Remond, A Attyé, A Lecler, L Lamalle, N Boudiaf, F Aptel, A Krainik, C Chiquet
BACKGROUND AND PURPOSE: A rapid identification of the etiology of anterior ischemic optic neuropathy is crucial because it determines therapeutic management. Our aim was to assess MR imaging to study the optic nerve head in patients referred with anterior ischemic optic neuropathy, due to either giant cell arteritis or the nonarteritic form of the disease, compared with healthy subjects. MATERIALS AND METHODS: Fifteen patients with giant cell arteritis-related anterior ischemic optic neuropathy and 15 patients with nonarteritic anterior ischemic optic neuropathy from 2 medical centers were prospectively included in our study between August 2015 and May 2016...
May 11, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28495948/introduction-of-a-dedicated-emergency-department-mr-imaging-scanner-at-the-barrow-neurological-institute
#16
M Buller, J P Karis
Use of advanced imaging in the emergency department has been increasing in the United States during the past 2 decades. This trend has been most notable in CT, which has increased concern over the effects of increasing levels of medical ionizing radiation. MR imaging offers a safe, nonionizing alternative to CT and is diagnostically superior in many neurologic conditions encountered in the emergency department. Herein, we describe the process of developing and installing a dedicated MR imaging scanner in the Neuroscience Emergency Department at the Barrow Neurological Institute and its effects on neuroradiology and the emergency department in general...
May 11, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28495947/mechanical-thrombectomy-with-the-embolus-retriever-with-interlinked-cages-in-acute-ischemic-stroke-eric-the-new-boy-in-the-class
#17
H Steglich-Arnholm, D Kondziella, A Wagner, M E Cronqvist, K Hansen, T C Truelsen, L-H Krarup, J L S Højgaard, S Taudorf, H K Iversen, D W Krieger, M Holtmannspötter
BACKGROUND AND PURPOSE: The Embolus Retriever with Interlinked Cages (ERIC) device is a novel stent retriever for mechanical thrombectomy. It consists of interlinked cages and could improve procedural benchmarks and clinical outcome compared with classic stent retrievers. This study compares the rates of recanalization, favorable clinical outcome, procedural adverse events, and benchmarks between the ERIC device and classic stent retrievers. MATERIALS AND METHODS: From 545 patients treated with thrombectomy between 2012 and 2015, 316 patients were included...
May 11, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28495946/neuroimaging-changes-in-menkes-disease-part-1
#18
REVIEW
R Manara, L D'Agata, M C Rocco, R Cusmai, E Freri, L Pinelli, F Darra, E Procopio, R Mardari, C Zanus, G Di Rosa, C Soddu, M Severino, M Ermani, D Longo, S Sartori
Menkes disease is a rare multisystem X-linked disorder of copper metabolism. Despite an early, severe, and progressive neurologic involvement, our knowledge of brain involvement remains unsatisfactory. The first part of this retrospective and review MR imaging study aims to define the frequency rate, timing, imaging features, and evolution of intracranial vascular and white matter changes. According to our analysis, striking but also poorly evolutive vascular abnormalities characterize the very early phases of disease...
May 11, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28495945/role-of-high-resolution-dynamic-contrast-enhanced-mri-with-golden-angle-radial-sparse-parallel-reconstruction-to-identify-the-normal-pituitary-gland-in-patients-with-macroadenomas
#19
R Sen, C Sen, J Pack, K T Block, J G Golfinos, V Prabhu, F Boada, O Gonen, D Kondziolka, G Fatterpekar
BACKGROUND AND PURPOSE: Preoperative localization of the pituitary gland with imaging in patients with macroadenomas has been inadequately explored. The pituitary gland enhancing more avidly than a macroadenoma has been described in the literature. Taking advantage of this differential enhancement pattern, our aim was to evaluate the role of high-resolution dynamic MR imaging with golden-angle radial sparse parallel reconstruction in localizing the pituitary gland in patients undergoing trans-sphenoidal resection of a macroadenoma...
May 11, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28495944/what-does-the-boxed-warning-tell-us-safe-practice-of-using-ferumoxytol-as-an-mri-contrast-agent
#20
C G Varallyay, G B Toth, R Fu, J P Netto, J Firkins, P Ambady, E A Neuwelt
BACKGROUND AND PURPOSE: Despite the label change and the FDA's boxed warning added to the Feraheme (ferumoxytol) label in March 2015, radiologists have shown increasing interest in using ferumoxytol as an MR imaging contrast agent as a supplement or alternative to gadolinium. The goals of this study were to provide information regarding ferumoxytol safety as an imaging agent in a single center and to assess how the Feraheme label change may affect this potential, currently off-label indication...
May 11, 2017: AJNR. American Journal of Neuroradiology
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