journal
MENU ▼
Read by QxMD icon Read
search

AJNR. American Journal of Neuroradiology

journal
https://www.readbyqxmd.com/read/28082265/regarding-uremic-encephalopathy-mr-imaging-findings-and-clinical-correlation
#1
LETTER
N Das, X Wu, A Malhotra
No abstract text is available yet for this article.
January 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28082264/reply
#2
LETTER
I H Lee, D M Kim, C J Song
No abstract text is available yet for this article.
January 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28082263/effects-of-radiation-exposure-on-the-cost-effectiveness-of-ct-angiography-and-perfusion-imaging-in-aneurysmal-subarachnoid-hemorrhage
#3
J Ivanidze, R A Charalel, I Shuryak, D Brenner, A Pandya, O N Kallas, K Kesavabhotla, A Z Segal, M S Simon, P C Sanelli
BACKGROUND AND PURPOSE: CT angiography and perfusion imaging is an important prognostic tool in the management of patients with aneurysmal subarachnoid hemorrhage. The purpose of this study was to perform a cost-effectiveness analysis of advanced imaging in patients with SAH, incorporating the risks of radiation exposure from CT angiography and CT perfusion imaging. MATERIALS AND METHODS: The risks of radiation-induced brain cancer and cataracts were incorporated into our established decision model comparing the cost-effectiveness of CT angiography and CT perfusion imaging and transcranial Doppler sonography in SAH...
January 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28082262/endovascular-rescue-therapy-for-refractory-vasospasm-when-and-how
#4
M Weiss, G A Schubert
No abstract text is available yet for this article.
January 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28082261/hydrogel-versus-bare-platinum-coils-in-patients-with-large-or-recurrent-aneurysms-prone-to-recurrence-after-endovascular-treatment-a-randomized-controlled-trial
#5
J Raymond, R Klink, M Chagnon, S L Barnwell, A J Evans, J Mocco, B H Hoh, A S Turk, R D Turner, H Desal, D Fiorella, S Bracard, A Weill, F Guilbert, S Lanthier, A J Fox, T E Darsaut, P M White, D Roy
BACKGROUND AND PURPOSE: Some patients are at high risk of aneurysm recurrence after endovascular treatment: patients with large aneurysms (Patients Prone to Recurrence After Endovascular Treatment PRET-1) or with aneurysms that have previously recurred after coiling (PRET-2). We aimed to establish whether the use of hydrogel coils improved efficacy outcomes compared with bare platinum coils. MATERIALS AND METHODS: PRET was an investigator-led, pragmatic, multicenter, parallel, randomized (1:1) trial...
January 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28057636/ct-angiography-of-the-head-in-extracorporeal-membrane-oxygenation
#6
J Acharya, A G Rajamohan, M R Skalski, M Law, W Gibbs
Extracorporeal membrane oxygenation is an artificial cardiopulmonary bypass technique used to support patients with severe pulmonary failure or both pulmonary and cardiac failure. The hemodynamic changes produced by extracorporeal membrane oxygenation affect the appearance of CTA of the head images, often confounding interpretation if the correct history and understanding of extracorporeal membrane oxygenation are not known. This technical report describes the principles of extracorporeal membrane oxygenation, techniques to optimize intracranial CTA imaging, and pitfalls...
January 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28057635/in-vivo-assessment-of-the-impact-of-regional-intracranial-atherosclerotic-lesions-on-brain-arterial-3d-hemodynamics
#7
C Wu, S Schnell, P Vakil, A R Honarmand, S A Ansari, J Carr, M Markl, S Prabhakaran
BACKGROUND AND PURPOSE: Intracranial atherosclerosis induces hemodynamic disturbance, which is not well-characterized, particularly in cerebral flow redistribution. We aimed to characterize the impact of regional stenotic lesions on intracranial hemodynamics by using 4D flow MR imaging. MATERIALS AND METHODS: 4D flow MR imaging was performed in 22 symptomatic patients (mean age, 68.4 ± 14.2 years) with intracranial stenosis (ICA, n = 7; MCA, n = 9; basilar artery, n = 6) and 10 age-appropriate healthy volunteers (mean age, 60...
January 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28057634/predictive-utility-of-marketed-volumetric-software-tools-in-subjects-at-risk-for-alzheimer-disease-do-regions-outside-the-hippocampus-matter
#8
T P Tanpitukpongse, M A Mazurowski, J Ikhena, J R Petrella
BACKGROUND AND PURPOSE: Alzheimer disease is a prevalent neurodegenerative disease. Computer assessment of brain atrophy patterns can help predict conversion to Alzheimer disease. Our aim was to assess the prognostic efficacy of individual-versus-combined regional volumetrics in 2 commercially available brain volumetric software packages for predicting conversion of patients with mild cognitive impairment to Alzheimer disease. MATERIALS AND METHODS: Data were obtained through the Alzheimer's Disease Neuroimaging Initiative...
January 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28057633/compacting-a-single-flow-diverter-versus-overlapping-flow-diverters-for-intracranial-aneurysms-a-computational-study
#9
R J Damiano, V M Tutino, N Paliwal, D Ma, J M Davies, A H Siddiqui, H Meng
BACKGROUND AND PURPOSE: Locally compacting the mesh of a flow diverter by a dynamic push-pull technique can accelerate intracranial aneurysm healing. We asked how this deployment strategy compares with overlapping 2 flow diverters for aneurysmal flow reduction. MATERIALS AND METHODS: Using a high-fidelity virtual stent placement method, we simulated 3 flow-diverter strategies (single noncompacted, 2 overlapped, and single compacted) in 3 aneurysms (fusiform, large saccular, and medium saccular)...
January 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28034997/influence-of-t1-weighted-signal-intensity-on-fsl-voxel-based-morphometry-and-freesurfer-cortical-thickness
#10
S Chung, X Wang, Y W Lui
The effect of T1 signal on FSL voxel-based morphometry modulated GM density and FreeSurfer cortical thickness is explored. The techniques rely on different analyses, but both are commonly used to detect spatial changes in GM. Standard pipelines show FSL voxel-based morphometry is sensitive to T1 signal alterations within a physiologic range, and results can appear discordant between FSL voxel-based morphometry and FreeSurfer cortical thickness. Care should be taken in extrapolating results to the effect on brain volume...
December 29, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28034996/a-fully-automated-atlas-based-approach-for-superior-cerebellar-peduncle-evaluation-in-progressive-supranuclear-palsy-phenotypes
#11
G Nicoletti, M E Caligiuri, A Cherubini, M Morelli, F Novellino, G Arabia, M Salsone, A Quattrone
BACKGROUND AND PURPOSE: The superior cerebellar peduncle is damaged in progressive supranuclear palsy. However, alterations differ between progressive supranuclear palsy with Richardson syndrome and progressive supranuclear palsy-parkinsonism. In this study, we propose an automated tool for superior cerebellar peduncle integrity assessment and test its performance in patients with progressive supranuclear palsy with Richardson syndrome, progressive supranuclear palsy-parkinsonism, Parkinson disease, and healthy controls...
December 29, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28034995/effects-of-mri-protocol-parameters-preload-injection-dose-fractionation-strategies-and-leakage-correction-algorithms-on-the-fidelity-of-dynamic-susceptibility-contrast-mri-estimates-of-relative-cerebral-blood-volume-in-gliomas
#12
K Leu, J L Boxerman, B M Ellingson
BACKGROUND AND PURPOSE: DSC perfusion MR imaging assumes that the contrast agent remains intravascular; thus, disruptions in the blood-brain barrier common in brain tumors can lead to errors in the estimation of relative CBV. Acquisition strategies, including the choice of flip angle, TE, TR, and preload dose and incubation time, along with post hoc leakage-correction algorithms, have been proposed as means for combating these leakage effects. In the current study, we used DSC-MR imaging simulations to examine the influence of these various acquisition parameters and leakage-correction strategies on the faithful estimation of CBV...
December 29, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28034994/mr-fingerprinting-of-adult-brain-tumors-initial-experience
#13
C Badve, A Yu, S Dastmalchian, M Rogers, D Ma, Y Jiang, S Margevicius, S Pahwa, Z Lu, M Schluchter, J Sunshine, M Griswold, A Sloan, V Gulani
BACKGROUND AND PURPOSE: MR fingerprinting allows rapid simultaneous quantification of T1 and T2 relaxation times. This study assessed the utility of MR fingerprinting in differentiating common types of adult intra-axial brain tumors. MATERIALS AND METHODS: MR fingerprinting acquisition was performed in 31 patients with untreated intra-axial brain tumors: 17 glioblastomas, 6 World Health Organization grade II lower grade gliomas, and 8 metastases. T1, T2 of the solid tumor, immediate peritumoral white matter, and contralateral white matter were summarized within each ROI...
December 29, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28007772/imaging-carotid-atherosclerosis-plaque-ulceration-comparison-of-advanced-imaging-modalities-and-recent-developments
#14
REVIEW
J Yuan, A Usman, T Das, A J Patterson, J H Gillard, M J Graves
Atherosclerosis remains the leading cause of long-term mortality and morbidity worldwide, despite remarkable advancement in its management. Vulnerable atherosclerotic plaques are principally responsible for thromboembolic events in various arterial territories such as carotid, coronary, and lower limb vessels. Carotid plaque ulceration is one of the key features associated with plaque vulnerability and is considered a notable indicator of previous plaque rupture and possible future cerebrovascular events. Multiple imaging modalities have been used to assess the degree of carotid plaque ulceration for diagnostic and research purposes...
December 22, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28007771/multivariate-analysis-of-mri-biomarkers-for-predicting-neurologic-impairment-in-cervical-spinal-cord-injury
#15
J Haefeli, M C Mabray, W D Whetstone, S S Dhall, J Z Pan, P Upadhyayula, G T Manley, J C Bresnahan, M S Beattie, A R Ferguson, J F Talbott
BACKGROUND AND PURPOSE: Acute markers of spinal cord injury are essential for both diagnostic and prognostic purposes. The goal of this study was to assess the relationship between early MR imaging biomarkers after acute cervical spinal cord injury and to evaluate their predictive validity of neurologic impairment. MATERIALS AND METHODS: We performed a retrospective cohort study of 95 patients with acute spinal cord injury and preoperative MR imaging within 24 hours of injury...
December 22, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28007770/flow-diversion-in-ruptured-intracranial-aneurysms-a-meta-analysis
#16
T P Madaelil, C J Moran, D T Cross, A P Kansagra
BACKGROUND: Flow diversion is now an established technique to treat unruptured intracranial aneurysms not readily amenable to endovascular coil embolization or open microsurgical occlusion. The role of flow-diverting devices in treating ruptured aneurysms is less clear. PURPOSE: To estimate rates of angiographic occlusion and good clinical outcome in patients with ruptured intracranial aneurysms treated with flow-diverting devices. DATA SOURCES: Systematic review of Ovid MEDLINE, PubMed, Cochrane databases, and EMBASE from inception to December 2015 for articles that included ruptured aneurysms treated with flow diversion...
December 22, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28007769/surpass-flow-diverter-for-treatment-of-posterior-circulation-aneurysms
#17
C A Taschner, S Vedantham, J de Vries, A Biondi, J Boogaarts, N Sakai, P Lylyk, I Szikora, S Meckel, H Urbach, P Kan, R Siekmann, J Bernardy, M J Gounis, A K Wakhloo
BACKGROUND AND PURPOSE: Flow diverters for the treatment of posterior circulation aneurysms remain controversial. We aimed to identify factors contributing to outcome measures in patients treated with the Surpass flow diverter for aneurysms in this location. MATERIALS AND METHODS: We conducted an observational study of 53 patients who underwent flow-diverter treatment for posterior circulation aneurysms at 15 centers. Key outcome measures were mortality, complete aneurysm occlusion, and modified Rankin Scale score at follow-up...
December 22, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28007768/toward-precision-and-reproducibility-of-diffusion-tensor-imaging-a-multicenter-diffusion-phantom-and-traveling-volunteer-study
#18
E M Palacios, A J Martin, M A Boss, F Ezekiel, Y S Chang, E L Yuh, M J Vassar, D M Schnyer, C L MacDonald, K L Crawford, A Irimia, A W Toga, P Mukherjee
BACKGROUND AND PURPOSE: Precision medicine is an approach to disease diagnosis, treatment, and prevention that relies on quantitative biomarkers that minimize the variability of individual patient measurements. The aim of this study was to assess the intersite variability after harmonization of a high-angular-resolution 3T diffusion tensor imaging protocol across 13 scanners at the 11 academic medical centers participating in the Transforming Research and Clinical Knowledge in Traumatic Brain Injury multisite study...
December 22, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28007767/usefulness-of-non-contrast-enhanced-mr-angiography-using-a-silent-scan-for-follow-up-after-y-configuration-stent-assisted-coil-embolization-for-basilar-tip-aneurysms
#19
N Takano, M Suzuki, R Irie, M Yamamoto, N Hamasaki, K Kamagata, K K Kumamaru, M Hori, H Oishi, S Aoki
BACKGROUND AND PURPOSE: Y-configuration stent-assisted coil embolization is used for treating wide-neck aneurysms. Noninvasive alternatives to x-ray DSA for follow-up after Y-configuration stent-assisted coil embolization treatment are required. This study aimed to assess the usefulness of non-contrast-enhanced MRA by using a Silent Scan (silent MRA) for follow-up after Y-configuration stent-assisted coil embolization for basilar tip aneurysms. MATERIALS AND METHODS: Seven patients treated with Y-configuration stent-assisted coil embolization for basilar tip aneurysms underwent silent MRA, 3D TOF-MRA, and DSA...
December 22, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28007766/the-efficacy-of-shielding-systems-for-reducing-operator-exposure-during-neurointerventional-procedures-a-real-world-prospective-study
#20
T R Miller, J Zhuo, G Jindal, R Shivashankar, N Beaty, D Gandhi
BACKGROUND AND PURPOSE: Neurointerventional surgery may expose patients and physician operators to substantial amounts of ionizing radiation. Although strategies for reducing patient exposure have been explored in the medical literature, there has been relatively little published in regards to decreasing operator exposure. The purpose of this study was to evaluate the efficacy of shielding systems in reducing physician exposure in a modern neurointerventional practice. MATERIALS AND METHODS: Informed consent was obtained from operators for this Health Insurance Portability and Accountability Act-compliant, institutional review board-approved study...
December 22, 2016: AJNR. American Journal of Neuroradiology
journal
journal
27894
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"