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AJNR. American Journal of Neuroradiology

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https://www.readbyqxmd.com/read/28209585/regarding-mr-imaging-of-the-cervical-spine-in-nonaccidental-trauma-a-tertiary-institution-experience
#1
LETTER
X Wu, D Durand, B Rao, A Malhotra
No abstract text is available yet for this article.
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209584/reply
#2
LETTER
T N Booth, R Jacob, C Greenwell, K Reeder, K Koral
No abstract text is available yet for this article.
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209583/combining-diffusion-tensor-metrics-and-dsc-perfusion-imaging-can-it-improve-the-diagnostic-accuracy-in-differentiating-tumefactive-demyelination-from-high-grade-glioma
#3
S B Hiremath, A Muraleedharan, S Kumar, C Nagesh, C Kesavadas, M Abraham, T R Kapilamoorthy, B Thomas
BACKGROUND AND PURPOSE: Tumefactive demyelinating lesions with atypical features can mimic high-grade gliomas on conventional imaging sequences. The aim of this study was to assess the role of conventional imaging, DTI metrics (p:q tensor decomposition), and DSC perfusion in differentiating tumefactive demyelinating lesions and high-grade gliomas. MATERIALS AND METHODS: Fourteen patients with tumefactive demyelinating lesions and 21 patients with high-grade gliomas underwent brain MR imaging with conventional, DTI, and DSC perfusion imaging...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209582/noninvasive-evaluation-of-cbf-and-perfusion-delay-of-moyamoya-disease-using-arterial-spin-labeling-mri-with-multiple-postlabeling-delays-comparison-with-15-o-gas-pet-and-dsc-mri
#4
S Hara, Y Tanaka, Y Ueda, S Hayashi, M Inaji, K Ishiwata, K Ishii, T Maehara, T Nariai
BACKGROUND AND PURPOSE: Arterial spin-labeling MR imaging with multiple postlabeling delays has a potential to evaluate various hemodynamic parameters. To clarify whether arterial spin-labeling MR imaging can identify CBF and perfusion delay in patients with Moyamoya disease, we compared arterial spin-labeling, DSC, and (15)O-gas PET in terms of their ability to identify these parameters. MATERIALS AND METHODS: Eighteen patients with Moyamoya disease (5 men, 13 women; ages, 21-55 years) were retrospectively analyzed...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209581/postoperative-mri-evaluation-of-a-radiofrequency-cordotomy-lesion-for-intractable-cancer-pain
#5
A Vedantam, P Hou, T L Chi, K R Hess, P M Dougherty, E Bruera, A Viswanathan
BACKGROUND AND PURPOSE: There are limited data on the use of postoperative imaging to evaluate the cordotomy lesion. We aimed to describe the cordotomy lesion by using postoperative MR imaging in patients after percutaneous cordotomy for intractable cancer pain. MATERIALS AND METHODS: Postoperative MR imaging and clinical outcomes were prospectively obtained for 10 patients after percutaneous cordotomy for intractable cancer pain. Area, signal intensity, and location of the lesion were recorded...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209580/white-matter-tract-pathology-in-pediatric-anoxic-brain-injury-from-drowning
#6
M Ishaque, J H Manning, M D Woolsey, C G Franklin, F S Salinas, P T Fox
BACKGROUND AND PURPOSE: Although drowning is a leading cause of mortality and morbidity in young children, the neuropathologic consequences have not been fully determined. The purpose of this article was to quantitatively characterize white matter microstructural abnormalities in pediatric anoxic brain injury from nonfatal drowning and investigate the correlation with motor function. MATERIALS AND METHODS: Whole-brain T1-weighted and diffusion-weighted MR imaging datasets were acquired in 11 children with chronic anoxic brain injury and 11 age- and sex-matched neurotypical controls (4-12 years of age)...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209579/patterns-of-brain-injury-in-newborns-treated-with-extracorporeal-membrane-oxygenation
#7
M A Wien, M T Whitehead, D Bulas, M Ridore, L Melbourne, G Oldenburg, B L Short, A N Massaro
BACKGROUND AND PURPOSE: Neonates treated with extracorporeal membrane oxygenation are at risk for brain injury and subsequent neurodevelopmental compromise. Advances in MR imaging and improved accessibility have led to the increased use of routine MR imaging after extracorporeal membrane oxygenation. Our objective was to describe the frequency and patterns of extracorporeal membrane oxygenation-related brain injury based on MR imaging findings in a large contemporary cohort of neonates treated with extracorporeal membrane oxygenation...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209578/intraforaminal-location-of-thoracolumbar-radicular-arteries-providing-an-anterior-radiculomedullary-artery-using-flat-panel-catheter-angiotomography
#8
L Gregg, D E Sorte, P Gailloud
BACKGROUND AND PURPOSE: Flat panel catheter angiotomography performed during the selective injection of intersegmental arteries offers a multiplanar assessment of the intraforaminal course of the radicular arteries providing an anterior radiculomedullary artery. Injury of anterior radiculomedullary arteries during transforaminal epidural steroid injections can result in spinal cord damage. Evaluations of the intraforaminal location of these arteries have so far been limited to anteroposterior views or the examination of cadaveric material...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209577/feasibility-of-flat-panel-detector-ct-in-perfusion-assessment-of-brain-arteriovenous-malformations-initial-clinical-experience
#9
M Garcia, T W Okell, M Gloor, M A Chappell, P Jezzard, O Bieri, J V Byrne
The different results from flat panel detector CT in various pathologies have provoked some discussion. Our aim was to assess the role of flat panel detector CT in brain arteriovenous malformations, which has not yet been assessed. Five patients with brain arteriovenous malformations were studied with flat panel detector CT, DSC-MR imaging, and vessel-encoded pseudocontinuous arterial spin-labeling. In glomerular brain arteriovenous malformations, perfusion was highest next to the brain arteriovenous malformation with decreasing values with increasing distance from the lesion...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209576/differences-in-hemodynamics-and-rupture-rate-of-aneurysms-at-the-bifurcation-of-the-basilar-and-internal-carotid-arteries
#10
R Doddasomayajula, B Chung, F Hamzei-Sichani, C M Putman, J R Cebral
BACKGROUND AND PURPOSE: Cerebral aneurysms in the posterior circulation are known to have a higher rupture risk than those in the anterior circulation. We sought to test the hypothesis that differences in hemodynamics can explain the difference in rupture rates. MATERIALS AND METHODS: A total of 117 aneurysms, 63 at the tip of the basilar artery (27 ruptured, 36 unruptured, rupture rate = 43%) and 54 at the bifurcation of the internal carotid artery (11 ruptured, 43 unruptured, rupture rate = 20%) were analyzed with image-based computational fluid dynamics...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28183840/imaging-characteristics-of-pediatric-diffuse-midline-gliomas-with-histone-h3-k27m-mutation
#11
M S Aboian, D A Solomon, E Felton, M C Mabray, J E Villanueva-Meyer, S Mueller, S Cha
BACKGROUND AND PURPOSE: The 2016 World Health Organization Classification of Tumors of the Central Nervous System includes "diffuse midline glioma with histone H3 K27M mutation" as a new diagnostic entity. We describe the MR imaging characteristics of this new tumor entity in pediatric patients. MATERIALS AND METHODS: We retrospectively reviewed imaging features of pediatric patients with midline gliomas with or without the histone H3 K27 mutation. We evaluated the imaging features of these tumors on the basis of location, enhancement pattern, and necrosis...
February 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28183839/mr-imaging-of-individual-perfusion-reorganization-using-superselective-pseudocontinuous-arterial-spin-labeling-in-patients-with-complex-extracranial-steno-occlusive-disease
#12
V Richter, M Helle, M J P van Osch, T Lindner, A S Gersing, P Tsantilas, H-H Eckstein, C Preibisch, C Zimmer
BACKGROUND AND PURPOSE: Patients with multiple stenoses or occlusions of the extracranial arteries require an individualized diagnostic approach. We evaluated the feasibility and clinical utility of a novel MR imaging technique for regional perfusion imaging in this patient group. MATERIALS AND METHODS: Superselective pseudocontinuous arterial spin-labeling with a circular labeling spot enabling selective vessel labeling was added to routine imaging in a prospective pilot study in 50 patients (10 women, 70...
February 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28183838/autoimmune-encephalitis-pathophysiology-and-imaging-review-of-an-overlooked-diagnosis
#13
REVIEW
B P Kelley, S C Patel, H L Marin, J J Corrigan, P D Mitsias, B Griffith
Autoimmune encephalitis is a relatively new category of immune-mediated disease involving the central nervous system that demonstrates a widely variable spectrum of clinical presentations, ranging from the relatively mild or insidious onset of cognitive impairment to more complex forms of encephalopathy with refractory seizure. Due to its diverse clinical features, which can mimic a variety of other pathologic processes, autoimmune encephalitis presents a diagnostic challenge to clinicians. Imaging findings in patients with these disorders can also be quite variable, but recognizing characteristic findings within limbic structures suggestive of autoimmune encephalitis can be a key step in alerting clinicians to the potential diagnosis and ensuring a prompt and appropriate clinical work-up...
February 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28183837/diagnostic-performance-of-ultrafast-brain-mri-for-evaluation-of-abusive-head-trauma
#14
S F Kralik, M Yasrebi, N Supakul, C Lin, L G Netter, R A Hicks, R A Hibbard, L L Ackerman, M L Harris, C Y Ho
BACKGROUND AND PURPOSE: MR imaging with sedation is commonly used to detect intracranial traumatic pathology in the pediatric population. Our purpose was to compare nonsedated ultrafast MR imaging, noncontrast head CT, and standard MR imaging for the detection of intracranial trauma in patients with potential abusive head trauma. MATERIALS AND METHODS: A prospective study was performed in 24 pediatric patients who were evaluated for potential abusive head trauma...
February 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28183836/low-dose-ct-for-craniosynostosis-preserving-diagnostic-benefit-with-substantial-radiation-dose-reduction
#15
J C Montoya, L J Eckel, D R DeLone, A L Kotsenas, F E Diehn, L Yu, A C Bartley, R E Carter, C H McCollough, J G Fletcher
BACKGROUND AND PURPOSE: Given the positive impact of early intervention for craniosynostosis, CT is often performed for evaluation but radiation dosage remains a concern. We evaluated the potential for substantial radiation dose reduction in pediatric patients with suspected craniosynostosis. MATERIALS AND METHODS: CT projection data from pediatric patients undergoing head CT for suspected craniosynostosis were archived. Simulated lower-dose CT images corresponding to 25%, 10%, and 2% of the applied dose were created using a validated method...
February 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28183835/benign-spine-lesions-advances-in-techniques-for-minimally-invasive-percutaneous-treatment
#16
REVIEW
A Tomasian, A N Wallace, J W Jennings
Minimally invasive percutaneous imaging-guided techniques have been shown to be safe and effective for the treatment of benign tumors of the spine. Techniques available include a variety of tumor ablation technologies, including radiofrequency ablation, cryoablation, microwave ablation, alcohol ablation, and laser photocoagulation. Vertebral augmentation may be performed after ablation as part of the same procedure for fracture stabilization or prevention. Typically, the treatment goal in benign spine lesions is definitive cure...
February 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28154128/lack-of-association-between-statin-use-and-angiographic-and-clinical-outcomes-after-pipeline-embolization-for-intracranial-aneurysms
#17
W Brinjikji, H Cloft, S Cekirge, D Fiorella, R A Hanel, P Jabbour, P Lylyk, C McDougall, C Moran, A Siddiqui, I Szikora, D F Kallmes
BACKGROUND AND PURPOSE: Use of statin medications has been demonstrated to improve clinical and angiographic outcomes in patients receiving endovascular stent placement for coronary, peripheral, carotid, and intracranial stenoses. We studied the impact of statin use on long-term angiographic and clinical outcomes after flow-diverter treatment of intracranial aneurysms. MATERIALS AND METHODS: We performed a post hoc analysis from pooled patient-level datasets from 3 Pipeline Embolization Device studies: the International Retrospective Study of the Pipeline Embolization Device, the Pipeline for Uncoilable or Failed Aneurysms Study, and the Aneurysm Study of Pipeline in an Observational Registry...
February 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28154127/is-catheter-angiography-still-necessary-for-the-follow-up-of-spinal-malformations-after-treatment
#18
LETTER
M I Vargas, J Boto, Z Kulcsar
No abstract text is available yet for this article.
February 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28154126/diagnostic-quality-of-3d-t2-space-compared-with-t2-fse-in-the-evaluation-of-cervical-spine-mri-anatomy
#19
F H Chokshi, G Sadigh, W Carpenter, J W Allen
BACKGROUND AND PURPOSE: Spinal anatomy has been variably investigated using 3D MRI. We aimed to compare the diagnostic quality of T2 sampling perfection with application-optimized contrasts by using flip angle evolution (SPACE) with T2-FSE sequences for visualization of cervical spine anatomy. We predicted that T2-SPACE will be equivalent or superior to T2-FSE for visibility of anatomic structures. MATERIALS AND METHODS: Adult patients undergoing cervical spine MR imaging with both T2-SPACE and T2-FSE sequences for radiculopathy or myelopathy between September 2014 and February 2015 were included...
February 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28154125/interventional-radiology-clinical-practice-guideline-recommendations-for-neurovascular-disorders-are-not-based-on-high-quality-systematic-reviews
#20
A B Chong, M Taylor, G Schubert, M Vassar
BACKGROUND: In recent years, clinical practice guidelines have been criticized for biased interpretations of research evidence, and interventional radiology is no exception. PURPOSE: Our aim was to evaluate the methodologic quality and transparency of reporting in systematic reviews used as evidence in interventional radiology clinical practice guidelines for neurovascular disorders from the Society of Interventional Radiology. DATA SOURCES: Our sources were 9 neurovascular disorder clinical practice guidelines from the Society of Interventional Radiology...
February 2, 2017: AJNR. American Journal of Neuroradiology
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