journal
MENU ▼
Read by QxMD icon Read
search

AJNR. American Journal of Neuroradiology

journal
https://www.readbyqxmd.com/read/29025728/necessary-catheter-diameters-for-mechanical-thrombectomy-with-adapt
#1
O Nikoubashman, A Nikoubashman, M Büsen, M Wiesmann
BACKGROUND AND PURPOSE: Large-bore catheters allow mechanical thrombectomy in ischemic stroke by engaging and retrieving clots without additional devices (direct aspiration first-pass technique [ADAPT]). The purpose of this study was to establish a model for minimal catheter diameters needed for ADAPT. MATERIALS AND METHODS: We established a theoretic model for the calculation of minimal catheter diameters needed for ADAPT. We then verified its validity in 28 ADAPT maneuvers in a porcine in vivo model...
October 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29025727/ct-texture-analysis-potentially-predicts-local-failure-in-head-and-neck-squamous-cell-carcinoma-treated-with-chemoradiotherapy
#2
H Kuno, M M Qureshi, M N Chapman, B Li, V C Andreu-Arasa, K Onoue, M T Truong, O Sakai
BACKGROUND AND PURPOSE: The accurate prediction of prognosis and failure is crucial for optimizing treatment strategies for patients with cancer. The purpose of this study was to assess the performance of pretreatment CT texture analysis for the prediction of treatment failure in primary head and neck squamous cell carcinoma treated with chemoradiotherapy. MATERIALS AND METHODS: This retrospective study included 62 patients diagnosed with primary head and neck squamous cell carcinoma who underwent contrast-enhanced CT examinations for staging, followed by chemoradiotherapy...
October 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29025726/gestational-age-at-birth-and-brain-white-matter-development-in-term-born-infants-and-children
#3
X Ou, C M Glasier, R H Ramakrishnaiah, A Kanfi, A C Rowell, R T Pivik, A Andres, M A Cleves, T M Badger
BACKGROUND AND PURPOSE: Studies on infants and children born preterm have shown that adequate gestational length is critical for brain white matter development. Less is known regarding how variations in gestational age at birth in term infants and children affect white matter development, which was evaluated in this study. MATERIALS AND METHODS: Using DTI tract-based spatial statistics methods, we evaluated white matter microstructures in 2 groups of term-born (≥37 weeks of gestation) healthy subjects: 2-week-old infants (n = 44) and 8-year-old children (n = 63)...
October 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29025725/ct-texture-analysis-defining-and-integrating-new-biomarkers-for-advanced-oncologic-imaging-in-precision-medicine-a-comment-on-ct-texture-analysis-potentially-predicts-local-failure-in-head-and-neck-squamous-cell-carcinoma-treated-with-chemoradiotherapy
#4
https://www.readbyqxmd.com/read/29025724/correlation-between-clinical-outcomes-and-baseline-ct-and-ct-angiographic-findings-in-the-swift-prime-trial
#5
A P Jadhav, H-C Diener, A Bonafe, V M Pereira, E I Levy, B W Baxter, T G Jovin, R G Nogueira, D R Yavagal, C Cognard, D D Purcell, B K Menon, R Jahan, J L Saver, M Goyal
BACKGROUND AND PURPOSE: Patient selection for endovascular therapy remains a great challenge in clinic practice. We sought to determine the effect of baseline CT and angiography on outcomes in the Solitaire With the Intention for Thrombectomy as Primary Endovascular Treatment for Acute Ischemic Stroke (SWIFT PRIME) trial and to identify patients who would benefit from endovascular stroke therapy. MATERIALS AND METHODS: The primary end point was a 90-day modified Rankin Scale score of 0-2...
October 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29025723/setting-the-stage-for-2018-how-the-changes-in-the-american-joint-committee-on-cancer-union-for-international-cancer-control-cancer-staging-manual-eighth-edition-impact-radiologists
#6
C M Glastonbury, S K Mukherji, B O'Sullivan, W M Lydiatt
The updated eighth edition of the Cancer Staging Manual of the American Joint Committee on Cancer will be implemented in January 2018. There are multiple changes to the head and neck section of the manual, which will be relevant to radiologists participating in multidisciplinary head and neck tumor boards and reading pretreatment head and neck cancer scans. Human papillomavirus-related/p16(+) oropharyngeal squamous cell carcinoma will now be staged separately; this change reflects the markedly better prognosis of these tumors compared with non-human papillomavirus/p16(-) oropharyngeal squamous cell carcinoma...
October 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29025722/blunt-cerebrovascular-injuries-advances-in-screening-imaging-and-management-trends
#7
REVIEW
P Nagpal, B A Policeni, G Bathla, A Khandelwal, C Derdeyn, D Skeete
Blunt cerebrovascular injury is a relatively uncommon but sometimes life-threatening injury, particularly in patients presenting with ischemic symptoms in that vascular territory. The decision to pursue vascular imaging (generally CT angiography) is based on clinical and imaging findings. Several grading scales or screening criteria have been developed to guide the decision to pursue vascular imaging, as well as to recommend different treatment options for various injuries. The data supporting many of these guidelines and options are limited however...
October 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29025721/predictive-models-in-differentiating-vertebral-lesions-using-multiparametric-mri
#8
R Rathore, A Parihar, D K Dwivedi, A K Dwivedi, N Kohli, R K Garg, A Chandra
BACKGROUND AND PURPOSE: Conventional MR imaging has high sensitivity but limited specificity in differentiating various vertebral lesions. We aimed to assess the ability of multiparametric MR imaging in differentiating spinal vertebral lesions and to develop statistical models for predicting the probability of malignant vertebral lesions. MATERIALS AND METHODS: One hundred twenty-six consecutive patients underwent multiparametric MRI (conventional MR imaging, diffusion-weighted MR imaging, and in-phase/opposed-phase imaging) for vertebral lesions...
October 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29025720/health-care-economics-a-study-guide-for-neuroradiology-fellows-part-1
#9
REVIEW
S L Weiner, R Tu, R Javan, M R Taheri
Few resources are available in the medical literature for a comprehensive review of current health care economics as it relates to radiologists, specifically framed by topics defined by the Accreditation Council for Graduate Medical Education in the evaluation of neuroradiology fellows. Therefore, we present a comprehensive review article as a study guide for fellows to learn from and gain competence in the Accreditation Council for Graduate Medical Education neuroradiology milestones on health care economics...
October 12, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982793/photon-counting-ct-of-the-brain-in-vivo-human-results-and-image-quality-assessment
#10
A Pourmorteza, R Symons, D S Reich, M Bagheri, T E Cork, S Kappler, S Ulzheimer, D A Bluemke
BACKGROUND AND PURPOSE: Photon-counting detectors offer the potential for improved image quality for brain CT but have not yet been evaluated in vivo. The purpose of this study was to compare photon-counting detector CT with conventional energy-integrating detector CT for human brains. MATERIALS AND METHODS: Radiation dose-matched energy-integrating detector and photon-counting detector head CT scans were acquired with standardized protocols (tube voltage/current, 120 kV(peak)/370 mAs) in both an anthropomorphic head phantom and 21 human asymptomatic volunteers (mean age, 58...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982792/prevalence-of-internal-auditory-canal-diverticulum-and-its-association-with-hearing-loss-and-otosclerosis
#11
K J Pippin, T J Muelleman, J Hill, J Leever, H Staecker, L N Ledbetter
BACKGROUND AND PURPOSE: Focal low-attenuation outpouching or diverticulum at the anterolateral internal auditory canal is an uncommon finding on CT of the temporal bone. This finding has been described as cavitary otosclerosis in small case reports and histology series. The purpose of this study was to establish the prevalence of internal auditory canal diverticulum and its association with classic imaging findings of otosclerosis and/or hearing loss. MATERIALS AND METHODS: Temporal bone CT scans of 807 patients, obtained between January 2013 and January 2016, were retrospectively reviewed to identify internal auditory canal diverticula and/or classic imaging findings of otosclerosis...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982791/radiomics-in-brain-tumor-image-assessment-quantitative-feature-descriptors-and-machine-learning-approaches
#12
REVIEW
M Zhou, J Scott, B Chaudhury, L Hall, D Goldgof, K W Yeom, M Iv, Y Ou, J Kalpathy-Cramer, S Napel, R Gillies, O Gevaert, R Gatenby
Radiomics describes a broad set of computational methods that extract quantitative features from radiographic images. The resulting features can be used to inform imaging diagnosis, prognosis, and therapy response in oncology. However, major challenges remain for methodologic developments to optimize feature extraction and provide rapid information flow in clinical settings. Equally important, to be clinically useful, predictive radiomic properties must be clearly linked to meaningful biologic characteristics and qualitative imaging properties familiar to radiologists...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982790/basion-cartilaginous-dens-interval-an-imaging-parameter-for-craniovertebral-junction-assessment-in-children
#13
A K Singh, Z Fulton, R Tiwari, X Zhang, L Lu, W B Altmeyer, B Tantiwongkosi
BACKGROUND AND PURPOSE: Widening of the basion-dens interval is an important sign of cranioverterbral junction injury. The current literature on basion-dens interval in children is sparse and based on bony measurements with variable values. Our goal was to establish the normal values of a recently described new imaging parameter, the basion-cartilaginous dens interval in children. MATERIALS AND METHODS: Three hundred healthy pediatric patients (0-10 years of age) were selected retrospectively...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982789/endovascular-treatment-of-vein-of-galen-malformations-a-systematic-review-and-meta-analysis
#14
W Brinjikji, T Krings, M H Murad, A Rouchaud, D Meila
BACKGROUND: Outcomes after endovascular embolization of vein of Galen malformations remain relatively poorly described. PURPOSE: We performed a systematic review of the literature to determine outcomes and predictors of good outcomes following endovascular treatment of vein of Galen malformations. DATA SOURCES: We used Ovid MEDLINE, Ovid Embase, and the Web of Science. STUDY SELECTION: Our study consisted of all case series with ≥4 patients receiving endovascular treatment of vein of Galen malformations published through January 2017...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982788/quantitative-synthetic-mri-in-children-normative-intracranial-tissue-segmentation-values-during-development
#15
A McAllister, J Leach, H West, B Jones, B Zhang, S Serai
BACKGROUND AND PURPOSE: Synthetic MR imaging is a new technique to create absolute R1 relaxivity (1/T1), R2 relaxivity (1/T2), and proton-density maps using a single multiple-spin-echo saturation recovery sequence. These relaxivity maps allow rapid automated intracranial segmentation of tissue types. To assess its utility in children, we created a normative data base of intracranial volume and brain parenchymal, GM, WM, CSF, and myelin volumes in a pediatric population with normal brain MRI findings using synthetic MR imaging...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982787/hemodynamic-characteristics-of-ruptured-and-unruptured-multiple-aneurysms-at-mirror-and-ipsilateral-locations
#16
R Doddasomayajula, B J Chung, F Mut, C M Jimenez, F Hamzei-Sichani, C M Putman, J R Cebral
BACKGROUND AND PURPOSE: Different hemodynamic patterns have been associated with aneurysm rupture. The objective was to test whether hemodynamic characteristics of the ruptured aneurysm in patients with multiple aneurysms were different from those in unruptured aneurysms in the same patient. MATERIALS AND METHODS: Twenty-four mirror and 58 ipsilateral multiple aneurysms with 1 ruptured and the others unruptured were studied. Computational fluid dynamics models were created from 3D angiographies...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982786/preoperative-cerebral-oxygen-extraction-fraction-imaging-generated-from-7t-mr-quantitative-susceptibility-mapping-predicts-development-of-cerebral-hyperperfusion-following-carotid-endarterectomy
#17
J-I Nomura, I Uwano, M Sasaki, K Kudo, F Yamashita, K Ito, S Fujiwara, M Kobayashi, K Ogasawara
BACKGROUND AND PURPOSE: Preoperative hemodynamic impairment in the affected cerebral hemisphere is associated with the development of cerebral hyperperfusion following carotid endarterectomy. Cerebral oxygen extraction fraction images generated from 7T MR quantitative susceptibility mapping correlate with oxygen extraction fraction images on positron-emission tomography. The present study aimed to determine whether preoperative oxygen extraction fraction imaging generated from 7T MR quantitative susceptibility mapping could identify patients at risk for cerebral hyperperfusion following carotid endarterectomy...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982785/treatment-of-middle-cerebral-artery-aneurysms-with-flow-diverter-stents-a-systematic-review-and-meta-analysis
#18
F Cagnazzo, D Mantilla, P-H Lefevre, C Dargazanli, G Gascou, V Costalat
BACKGROUND: The safety and efficacy of flow-diversion treatment of MCA aneurysms have not been well-established. PURPOSE: Our aim was to evaluate angiographic and clinical outcomes after flow diversions for MCA aneurysms. DATA SOURCES: A systematic search of PubMed, MEDLINE, and Embase was performed for studies published from 2008 to May 2017. STUDY SELECTION: According to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, we selected studies with >5 patients describing angiographic and clinical outcomes after flow-diversion treatment of MCA aneurysms...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28982784/clinical-and-imaging-characteristics-of-arteriopathy-subtypes-in-children-with-arterial-ischemic-stroke-results-of-the-vips-study
#19
M Wintermark, N K Hills, G A DeVeber, A J Barkovich, T J Bernard, N R Friedman, M T Mackay, A Kirton, G Zhu, C Leiva-Salinas, Q Hou, H J Fullerton
BACKGROUND AND PURPOSE: Childhood arteriopathies are rare but heterogenous, and difficult to diagnose and classify, especially by nonexperts. We quantified clinical and imaging characteristics associated with childhood arteriopathy subtypes to facilitate their diagnosis and classification in research and clinical settings. MATERIALS AND METHODS: The Vascular Effects of Infection in Pediatric Stroke (VIPS) study prospectively enrolled 355 children with arterial ischemic stroke (2010-2014)...
October 5, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28970244/pial-artery-supply-as-an-anatomic-risk-factor-for-ischemic-stroke-in-the-treatment-of-intracranial-dural-arteriovenous-fistulas
#20
S W Hetts, A Yen, D L Cooke, J Nelson, P Jolivalt, J Banaga, M R Amans, C F Dowd, R T Higashida, M T Lawton, H Kim, V V Halbach
BACKGROUND AND PURPOSE: Although intracranial dural arteriovenous fistulas are principally supplied by dural branches of the external carotid, internal carotid, and vertebral arteries, they can also be fed by pial arteries that supply the brain. We sought to determine the frequency of neurologic deficits following treatment of intracranial dural arteriovenous fistulas with and without pial artery supply. MATERIALS AND METHODS: One hundred twenty-two consecutive patients who underwent treatment for intracranial dural arteriovenous fistulas at our hospital from 2008 to 2015 were retrospectively reviewed...
September 28, 2017: 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"