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AJNR. American Journal of Neuroradiology

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https://www.readbyqxmd.com/read/30237304/clinical-value-of-hybrid-tof-pet-mr-imaging-based-multiparametric-imaging-in-localizing-seizure-focus-in-patients-with-mri-negative-temporal-lobe-epilepsy
#1
K Shang, J Wang, X Fan, B Cui, J Ma, H Yang, Y Zhou, G Zhao, J Lu
BACKGROUND AND PURPOSE: Temporal lobe epilepsy is the most common type of epilepsy. Early surgical treatment is superior to prolonged medical therapy in refractory temporal lobe epilepsy. Successful surgical operations depend on the correct localization of the epileptogenic zone. This study aimed to evaluate the clinical value of hybrid TOF-PET/MR imaging-based multiparametric imaging in localizing the epileptogenic zone in patients with MR imaging-negative for temporal lobe epilepsy...
September 20, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30237303/dilated-vein-of-the-filum-terminale-on-mri-a-marker-for-deep-lumbar-and-sacral-dural-and-epidural-arteriovenous-fistulas
#2
W Brinjikji, C A Hilditch, J M Morris, A A Dmytriw, H Cloft, V Mendes Pereira, G Lanzino, T Krings
BACKGROUND AND PURPOSE: Conventional MR imaging can provide important clues regarding the location of a spinal vascular malformation. We hypothesized that a dilated vein of the filum terminale, identified as a curvilinear flow void on T2WI, could be an imaging marker for a lower lumbar (L3-L5) or sacral fistula. MATERIALS AND METHODS: We retrospectively identified all spinal dural and spinal epidural arteriovenous fistulas from 2 large tertiary referral centers from 2005 to 2018...
September 20, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30237302/the-asnr-acr-rsna-common-data-elements-project-what-will-it-do-for-the-house-of-neuroradiology
#3
A E Flanders, J E Jordan
The American Society of Neuroradiology has teamed up with the American College of Radiology and the Radiological Society of North America to create a catalog of neuroradiology common data elements that addresses specific clinical use cases. Fundamentally, a common data element is a question, concept, measurement, or feature with a set of controlled responses. This could be a measurement, subjective assessment, or ordinal value. Common data elements can be both machine- and human-generated. Rather than redesigning neuroradiology reporting, the goal is to establish the minimum number of "essential" concepts that should be in a report to address a clinical question...
September 20, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30237301/spinal-imaging-findings-of-open-spinal-dysraphisms-on-fetal-and-postnatal-mri
#4
U D Nagaraj, K S Bierbrauer, C B Stevenson, J L Peiro, F Y Lim, B Zhang, B M Kline-Fath
BACKGROUND AND PURPOSE: Fetal MRI has become a valuable tool in the evaluation of open spinal dysraphisms making studies comparing prenatal and postnatal MRI findings increasingly important. Our aim was to determine the accuracy of predicting the level of the spinal dysraphic defect of open spinal dysraphisms on fetal MR imaging and to report additional findings observed when comparing fetal and postnatal MR imaging of the spine in this population. MATERIALS AND METHODS: A single-center retrospective analysis was performed of fetal MRIs with open spinal dysraphisms from 2004 through 2016 with available diagnostic postnatal spine MR imaging...
September 20, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30237300/imaging-of-clival-hypoplasia-in-charge-syndrome-and-hypothesis-for-development-a-case-control-study
#5
C M de Geus, J E H Bergman, C M A van Ravenswaaij-Arts, L C Meiners
BACKGROUND AND PURPOSE: We present the largest case series to date on basiocciput abnormalities in CHARGE syndrome (Coloboma of the eye, Heart defects, Atresia of the choanae, Retardation of growth and/or development, Genital and/or urinary abnormalities, and Ear abnormalities and/or deafness). We aimed to show that basiocciput abnormalities are common and may aid in diagnosis. We furthermore explored whether clivus size correlates with the type of chromodomain-helicase-DNA binding protein 7 gene ( CHD7 ) mutation, which causes CHARGE syndrome, and with clinical criteria according to Blake et al and Verloes...
September 20, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30237299/cerebrovascular-reactivity-during-prolonged-breath-hold-in-experienced-freedivers
#6
V C Keil, L Eichhorn, H J M M Mutsaerts, F Träber, W Block, B Mädler, K van de Ven, J C W Siero, B J MacIntosh, J Petr, R Fimmers, H H Schild, E Hattingen
BACKGROUND AND PURPOSE: Experienced freedivers can endure prolonged breath-holds despite severe hypoxemia and are therefore ideal subjects to study apnea-induced cerebrovascular reactivity. This multiparametric study investigated CBF, the spatial coefficient of variation as a correlate of arterial transit time and brain metabolism, dynamics during prolonged apnea. MATERIALS AND METHODS: Fifteen male freedivers (age range, 20-64 years; cumulative previous prolonged breath-holds >2 minutes and 30 seconds: 4-79,200) underwent repetitive 3T pseudocontinuous arterial spin-labeling and 31 P-/1 H-MR spectroscopy before, during, and after a 5-minute breath-hold (split into early and late phases) and gave temporally matching venous blood gas samples...
September 20, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30237298/engorgement-of-deep-medullary-veins-in-neurosarcoidosis-a-common-yet-underrecognized-cerebrovascular-finding-on-swi
#7
C Zamora, S-C Hung, C Tomingas, C Atkinson, M Castillo
We describe the prevalence and potential significance of deep medullary vein engorgement on SWI in patients with neurosarcoidosis, a finding that has not been described previously. Engorgement was evaluated for possible associations with meningeal or perivascular disease, intracranial hemorrhage, and venous thrombosis, as well as with modified Rankin Scale scores at the time of MR imaging and at follow-up. Deep medullary vein engorgement was seen in 7 of 21 patients and was more common in men. Patients with venous engorgement had a significantly increased incidence of microhemorrhages, perivascular disease, and hydrocephalus...
September 20, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30237297/facial-venous-malformations-are-associated-with-cerebral-developmental-venous-anomalies
#8
W Brinjikji, C A Hilditch, A C Tsang, P J Nicholson, T Krings, R Agid
BACKGROUND AND PURPOSE: A number of studies have demonstrated the existence of segmental vascular disorders affecting soft tissues of the head and neck along with the intracranial vasculature. The purpose of this study was to determine whether there is an association between cerebral developmental venous anomalies and venous malformations of the face, head, and neck. MATERIALS AND METHODS: A consecutive series of patients with head and neck venous malformations who underwent MR imaging of the brain with postcontrast T1- or T2*-weighted imaging were included...
September 20, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213819/mri-findings-suggestive-of-herpes-simplex-encephalitis-in-patients-with-anti-nmda-receptor-encephalitis
#9
LETTER
M Scheel, C Finke
No abstract text is available yet for this article.
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213818/-reply
#10
T Zhang, Y Liu
No abstract text is available yet for this article.
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213817/quality-control-assessment-to-improve-the-accuracy-of-dynamic-contrast-enhanced-mr-imaging-perfusion
#11
LETTER
A Lecler, J C Sadik, J Savatovsky
No abstract text is available yet for this article.
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213816/-reply
#12
S Karimi
No abstract text is available yet for this article.
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213815/vertebroplasty-expectation-or-evidence-based-interventional-radiology
#13
LETTER
A Braillon, S Bewley
No abstract text is available yet for this article.
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213814/-reply
#14
R V Chandra, J Maingard, H Asadi, L-A Slater, J A Hirsch
No abstract text is available yet for this article.
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213813/longitudinal-persistence-of-meningeal-enhancement-on-postcontrast-7t-3d-flair-mri-in-multiple-sclerosis
#15
S N Jonas, I Izbudak, A A Frazier, D M Harrison
BACKGROUND AND PURPOSE: Preliminary research has demonstrated that postgadolinium 3D-FLAIR MR imaging at 7T may be a valuable tool for detecting abnormal meningeal enhancement and inflammation in MS; however, researchers have not systematically investigated its longitudinal persistence. We hypothesized that persistence of meningeal enhancement in MS varies on the basis of pattern of enhancement as well as demographic and clinical factors such as treatment status, disease phenotype, and disability score...
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213812/clinical-evaluation-of-highly-accelerated-compressed-sensing-time-of-flight-mr-angiography-for-intracranial-arterial-stenosis
#16
S S Lu, M Qi, X Zhang, X H Mu, M Schmidt, Y Sun, C Forman, P Speier, X N Hong
BACKGROUND AND PURPOSE: Time-of-flight MR angiography is the preferred imaging technique to assess intracranial arterial stenosis but is limited by a relatively long acquisition time. Compressed sensing provides an innovative approach in undersampling k -space to minimize the data-acquisition time. We aimed to evaluate the diagnostic accuracy of compressed sensing TOF for detecting intracranial arterial stenosis by comparison with conventional parallel imaging TOF-MRA. MATERIALS AND METHODS: Compressed sensing TOF and parallel imaging TOF were performed in 22 patients with intracranial arterial stenosis...
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213811/quantification-of-blood-velocity-with-4d-digital-subtraction-angiography-using-the-shifted-least-squares-method
#17
Y Wu, G Shaughnessy, C A Hoffman, E L Oberstar, S Schafer, T Schubert, K L Ruedinger, B J Davis, C A Mistretta, C M Strother, M A Speidel
BACKGROUND AND PURPOSE: 4D-DSA provides time-resolved 3D-DSA volumes with high temporal and spatial resolutions. The purpose of this study is to investigate a shifted least squares method to estimate the blood velocity from the 4D DSA images. Quantitative validation was performed using a flow phantom with an ultrasonic flow probe as ground truth. Quantification of blood velocity in human internal carotid arteries was compared with measurements generated from 3D phase-contrast MR imaging...
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213810/longitudinal-findings-of-mri-and-pet-in-west-syndrome-with-subtle-focal-cortical-dysplasia
#18
Y Sakaguchi, H Kidokoro, C Ogawa, Y Okai, Y Ito, H Yamamoto, A Ohno, T Nakata, T Tsuji, T Nakane, H Kawai, K Kato, S Naganawa, J Natsume
BACKGROUND AND PURPOSE: Despite the development of neuroimaging, identification of focal cortical dysplasia remains challenging. The purpose of this study was to show the longitudinal changes of MR imaging and FDG-PET in patients with West syndrome and subtle focal cortical dysplasia. MATERIALS AND METHODS: Among 52 consecutive patients with West syndrome, 4 were diagnosed with subtle focal cortical dysplasia on 3T MR imaging. MR imaging and PET findings were evaluated longitudinally at onset and at 12 and 24 months of age...
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213809/the-diagnostic-value-of-diffusion-weighted-imaging-in-differentiating-metastatic-lymph-nodes-of-head-and-neck-squamous-cell-carcinoma-a-systematic-review-and-meta-analysis
#19
C H Suh, Y J Choi, J H Baek, J H Lee
BACKGROUND: Accurate lymph node staging is crucial for proper treatment planning for metastasis in patients with head and neck squamous cell carcinoma. PURPOSE: Our aim was to evaluate the diagnostic performance of DWI for differentiating metastatic cervical lymph nodes from benign cervical lymph nodes in patients with head and neck squamous cell carcinoma and to identify optimal cutoff values for ADC. DATA SOURCES: A computerized literature search was performed to identify relevant original articles in Ovid MEDLINE and EMBASE...
September 13, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/30213808/multidelay-arterial-spin-labeling-mri-in-neonates-and-infants-cerebral-perfusion-changes-during-brain-maturation
#20
H G Kim, J H Lee, J W Choi, M Han, S-M Gho, Y Moon
BACKGROUND AND PURPOSE: Arterial spin-labeling with multiple postlabeling delays can correct transit times. We tried to evaluate CBF in neonates and infants using multidelay arterial spin-labeling. MATERIALS AND METHODS: Multidelay arterial spin-labeling was applied to 13 preterm neonates (mean postmenstrual age, 34.9 weeks), 13 term-equivalent-age neonates (mean postmenstrual age, 39.2 weeks), and 6 infants (mean postmenstrual age, 57.8 weeks). Transit time-corrected CBF in the caudate, thalamus, frontal GM, occipital GM, frontal WM, and occipital WM was measured, and relative CBF compared with the whole-brain CBF was calculated...
September 13, 2018: AJNR. American Journal of Neuroradiology
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