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https://www.readbyqxmd.com/read/27923749/spinal-glomus-arteriovenous-malformation-presenting-with-a-subarachnoid-hemorrhage
#1
Pascal Jabbour, Badih Daou, Elias Atallah, Fadi Al-Saiegh, Kenan Alkhalili, Stavropoula Tjoumakaris
BACKGROUND AND IMPORTANCE: Spinal arteriovenous malformations (AVMs) are rare lesions that may cause serious neurologic morbidity. With the developments in endovascular technology and embolic materials, endovascular management of spinal AVMs has gained significant popularity. CLINICAL PRESENTATION: A 61-year-old female presented with the worst headache of her life, associated with an acute onset of nausea and vomiting and was shown to have a grade 2 subarachnoid hemorrhage on CT scan...
December 3, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27905877/mineralocorticoid-receptor-antagonists-for-heart-failure-systematic-review-and-meta-analysis
#2
Nicolas M Berbenetz, Marko Mrkobrada
BACKGROUND: Mineralocorticoid receptor antagonists (MRAs) have been associated with improved patient outcomes in patients with heart failure with reduced ejection fraction (HFrEF) but not preserved ejection fraction (HFpEF). We conducted a systematic review and meta-analysis of selective and nonselective MRAs in HFrEF and HFpEF. METHODS: We searched Cochrane Central Register of Controlled Trials, MEDLINE and EMBASE. We included randomized controlled trials (RCT) of MRAs in adults with HFpEF or HFrEF if they reported data on major adverse cardiac events or drug safety...
December 1, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27902859/evaluation-of-velocity-sensitized-and-acceleration-sensitized-nce-mra-for-below-knee-peripheral-arterial-disease
#3
Nadeem Shaida, Andrew N Priest, T C See, Andrew P Winterbottom, Martin J Graves, David J Lomas
PURPOSE: To evaluate the diagnostic performance of velocity- and acceleration-sensitized noncontrast-enhanced magnetic resonance angiography (NCE-MRA) of the infrageniculate arteries using contrast-enhanced MRA (CE-MRA) as a reference standard. MATERIALS AND METHODS: Twenty-four patients with symptoms of peripheral arterial disease were recruited. Each patient's infrageniculate arterial tree was examined using a velocity-dependent flow-sensitized dephasing (VEL-FSD) technique, an acceleration-dependent (ACC-FSD) technique, and our conventional CE-MRA technique performed at 1...
November 30, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27899856/effect-of-spironolactone-on-plasma-apelin-12-levels-in-patients-with-chronic-systolic-heart-failure
#4
Mustafa Topuz, Mehmet Cosgun, Oğuz Akkuş, Atilla Bulut, Omer Sen, Ayşe Nur Topuz, Murat Caylı
BACKGROUND: The aim of this study was to determine whether spironolactone therapy has an effect on serum apelin-12 levels in heart failure with reduced ejection fraction (HFrEF) patients. METHODS: Eighty outpatients previously diagnosed with HFrEF were enrolled in the current study. Included patients were taking only standard heart failure therapy (ST) (angiotensin converting enzyme or angiotensin receptor blocker, beta-blockers, loop diuretics and anticoagulant or antiagregan agents) without a mineralocorticoid receptor antagonists (MRA) because of its side effects, and were designated the non-MRA group; those patients taking 25 mg/daily spironolactone in addition to the ST were deemed the MRA group...
November 2016: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/27899331/comparison-of-7t-and-3t-mri-in-patients-with-moyamoya-disease
#5
Byeong Ho Oh, Hyeong Cheol Moon, Hyeon Man Baek, Youn Joo Lee, Sang Woo Kim, Young Jai Jeon, Gun Seok Lee, Hong Rae Kim, Jai Ho Choi, Kyung Soo Min, Mou Seop Lee, Young Gyu Kim, Dong Ho Kim, Won Seop Kim, Young Seok Park
Magnetic resonance imaging and magnetic resonance angiography (MRI/MRA) are widely used for evaluating the moyamoya disease (MMD). This study compared the diagnostic accuracy of 7Tesla (T) and 3T MRI/MRA in MMD. In this case control study, 12 patients [median age: 34years; range (10-66years)] with MMD and 12 healthy controls [median age: 25years; range (22-59years)] underwent both 7T and 3T MRI/MRA. To evaluate the accuracy of MRI/MRA in MMD, five criteria were compared between imaging systems of 7T and 3T: Suzuki grading system, internal carotid artery (ICA) diameter, ivy sign, flow void of the basal ganglia on T2-weighted images, and high signal intensity areas of the basal ganglia on time-of-flight (TOF) source images...
November 27, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27898916/effects-of-aging-on-the-fundamental-color-chemistry-of-dark-cutting-beef
#6
A R English, K M Wills, B N Harsh, G G Mafi, D L VanOverbeke, R Ramanathan
The objective of the current study was to evaluate the effects of aging on myoglobin chemistry of dark-cutting beef. Ten USDA Choice (mean pH = 5.6; normal pH beef) and 10 no-roll dark cutter (mean pH = 6.4) strip loins were obtained from a commercial packing plant within 3 d of harvest. Loins were cut into 4 sections, vacuum packaged, randomly assigned to 0-, 21-, 42-, and 62-d aging at 2°C in the dark. Following aging, loin sections were cut into 2.5-cm-thick steaks and were used to determine bloom development, oxygen consumption (OC), metmyoglobin reducing activity (MRA), and lipid oxidation...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27894786/mr-angiography-can-guide-ed-management-of-suspected-acute-aortic-dissection
#7
Gary X Wang, Sandeep S Hedgire, Thang Q Le, Jonathan D Sonis, Brian J Yun, Michael H Lev, Ali S Raja, Anand M Prabhakar
BACKGROUND: Aortic dissection is typically evaluated with computed tomography angiography (CTA). However, the feasibility of using magnetic resonance angiography (MRA) in the ED is unclear. This study examined the indications and outcomes of MRA in suspected aortic dissection evaluation in the ED. METHODS: An IRB approved review identified patients who underwent MRA in the ED for acute thoracic aortic dissection from January 2010 to June 2016. Demographics, clinical assessment, CTA contraindications, outcomes, and ED disposition were analyzed...
November 17, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27893293/prevelence-of-primary-aldosteronism-in-an-urban-hypertensive-population
#8
Sandi-Jo Galati, Khadeen C Cheesman, Ryan Springer-Miller, Sarah M Hopkins, Lawrence Krakoff, Emilia Bagiella, Rachel A Zhuk, Tiffany K Ying, Chelsey Amer, Michael K Boyajian, W B Inabnet, Alice C Levine
OBJECTIVE: To determine the prevalence of primary aldosteronism (PA) in hypertensive patients presenting to the primary care clinic at The Mount Sinai Hospital, regardless of the degree of hypertension and to identify clinical criteria that should prompt screening for PA. METHODS: An aldosterone:renin ratio (ARR, cutoff ≥20, with plasma aldosterone concentration [PAC] ≥10 and suppressed renin) was used to prospectively screen 296 hypertensive patients (blood pressure [BP] ≥140/90) over the age of 18 from August 2012 through May 2013...
November 2016: Endocrine Practice
https://www.readbyqxmd.com/read/27886891/the-yield-of-diagnostic-imaging-in-patients-with-isolated-horner-syndrome
#9
REVIEW
Johanna D Beebe, Randy H Kardon, Matthew J Thurtell
We sought to determine, with a retrospective chart review, the imaging yield for patients with clinically isolated Horner syndrome. MRI/MRA of the head and neck extending from the supraorbital ridge to T4 with fat suppression and with postcontrast images was obtained. Of 88 patients with isolated Horner syndrome who were imaged, 20% had a causative etiology on imaging. The most common cause of an isolated Horner syndrome was a carotid artery dissection. There was 1 patient with a primary malignancy found to be the causative lesion in this group, and 1 patient with spread of their known metastatic disease...
February 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/27884880/first-pass-contrast-enhanced-mra-for-pretherapeutic-diagnosis-of-spinal-epidural-arteriovenous-fistulas-with-intradural-venous-reflux
#10
S Mathur, S P Symons, T J Huynh, P Muthusami, W Montanera, A Bharatha
BACKGROUND AND PURPOSE: Spinal epidural AVFs are rare spinal vascular malformations. When there is associated intradural venous reflux, they may mimic the more common spinal dural AVFs. Correct diagnosis and localization before conventional angiography is beneficial to facilitate treatment. We hypothesize that first-pass contrast-enhanced MRA can diagnose and localize spinal epidural AVFs with intradural venous reflux and distinguish them from other spinal AVFs. MATERIALS AND METHODS: Forty-two consecutive patients with a clinical and/or radiologic suspicion of spinal AVF underwent MR imaging, first-pass contrast-enhanced MRA, and DSA at a single institute (2000-2015)...
November 24, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27876661/fusion-three-dimensional-angiography-of-both-internal-carotid-arteries-in-the-evaluation-of-anterior-communicating-artery-aneurysms
#11
Kuhyun Yang, Hae-Won Koo, Wonhyoung Park, Jin Su Kim, Choong Gon Choi, Jung Cheol Park, Jae Sung Ahn, Do Hoon Kwon, Byung Duk Kwun, Deok Hee Lee
BACKGROUND: To determine whether 'fusion 3D angiography' of both internal carotid arteries (ICAs) can better disclose vascular details in patients diagnosed with anterior communicating artery (ACoA) aneurysms by computed tomography angiography (CTA) or magnetic resonance angiography (MRA). METHODS: Thirty-eight patients diagnosed with ACoA aneurysms by CTA or MRA were evaluated by the new post-processing feature, fusion 3D angiography, with results individually interpreted by four experts...
November 19, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27873231/atherosclerotic-renal-artery-stenosis
#12
Robert Schoepe, Stephen McQuillan, Debbie Valsan, Geoffrey Teehan
Atherosclerotic Renal Artery Stenosis is a form or peripheral arterial disease that tends to affect older subjects with hyperlipidemia, history of tobacco use, and who have other coexistent forms of vascular insufficiency. An abdominal bruit on physical exam can be a helpful clue. Slowly progressive, it can lead to critical narrowing of the renal arteries which creates a cascade of events such as renin-angiotensin-aldosterone activation (RAAS), hypertension, acute pulmonary edema, and renal fibrosis. The hypertension is considered a secondary form and can even be resistant to multiple antihypertensives...
November 22, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27868385/impact-of-eplerenone-on-cardiovascular-outcomes-in-heart-failure-patients-with-hypokalaemia
#13
Patrick Rossignol, Nicolas Girerd, George Bakris, Orly Vardeny, Brian Claggett, John J V McMurray, Karl Swedberg, Henry Krum, Dirk J van Veldhuisen, Harry Shi, Sean Spanyers, John Vincent, Renaud Fay, Zohra Lamiral, Scott D Solomon, Faiez Zannad, Bertram Pitt
AIMS: Although hypokalaemia is common among patients with heart failure (HF), the prognostic significance of baseline hypokalaemia and hypokalaemia during follow-up in HF patients receiving a mineralocorticoid receptor antagonist (MRA) remains uncertain. METHODS AND RESULTS: Results of the EMPHASIS-HF trial in patients (n = 2737) with HF and reduced EF with mild symptoms, randomized to eplerenone or placebo, were analysed with regard to the presence or occurrence of hypokalaemia (serum K(+) <4...
November 20, 2016: European Journal of Heart Failure
https://www.readbyqxmd.com/read/27867122/resolution-of-trigeminal-neuralgia-after-transvenous-embolization-of-a-cavernous-sinus-dural-arteriovenous-fistula
#14
Kenji Fukutome, Ichiro Nakagawa, Hun Soo Park, Takeshi Wada, Yasushi Motoyama, Kimihiko Kichikawa, Hiroyuki Nakase
A rare case of cavernous sinus dural arteriovenous fistula (CSDAVF) in a patient with trigeminal neuralgia (TN) that resolved immediately after transvenous embolization (TVE) is described. A 75-year-old woman presented with continuous facial pain. On time-of-flight magnetic resonance angiography (MRA), a CSDAVF was suspected, and digital subtraction angiography (DSA) showed a CSDAVF. The TN completely resolved immediately after TVE, with no recurrence. Follow-up MRA showed complete obliteration of the fistula 13 months after TVE...
November 17, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27867089/clinical-vascular-imaging-in-the-brain-at-7t
#15
Laurens Jl De Cocker, Arjen Lindenholz, Jaco Jm Zwanenburg, Anja G van der Kolk, Maarten Zwartbol, Peter R Luijten, Jeroen Hendrikse
Stroke and related cerebrovascular diseases are a major cause of mortality and disability. Even at standard-field-strengths (1.5T), MRI is by far the most sensitive imaging technique to detect acute brain infarctions and to characterize incidental cerebrovascular lesions, such as white matter hyperintensities, lacunes and microbleeds. Arterial time-of-flight (TOF) MR angiography (MRA) can depict luminal narrowing or occlusion of the major brain feeding arteries, and this without the need for contrast administration...
November 18, 2016: NeuroImage
https://www.readbyqxmd.com/read/27862577/crossover-comparison-of-ferumoxytol-and-gadobenate-dimeglumine-for-abdominal-mr-angiography-at-3-0-tesla-effects-of-contrast-bolus-length-and-flip-angle
#16
Tilman Schubert, Utaroh Motosugi, Sonja Kinner, Timothy J Colgan, Samir D Sharma, Scott Hetzel, Shane Wells, Camilo A Campo, Scott B Reeder
PURPOSE: Ferumoxytol (FE) has gained interest as an alternative to gadolinium-based contrast agents (GBCAs). The purpose of this study was to evaluate and optimize ferumoxytol dose and T1 weighting, in comparison to a conventional GBCA. MATERIALS AND METHODS: Twelve healthy volunteers (six women / six men, mean age 44.3 years) were recruited for this study. Scanning was performed on a clinical 3 Tesla (T) MRI system. Gadobenate dimeglumine (GD)-enhanced MRA was performed followed by FE-enhanced MRA 1 month later...
November 10, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27862507/accelerated-ferumoxytol-enhanced-4d-multiphase-steady-state-imaging-with-contrast-enhancement-music-cardiovascular-mri-validation-in-pediatric-congenital-heart-disease
#17
Ziwu Zhou, Fei Han, Stanislas Rapacchi, Kim-Lien Nguyen, Daniel Z Brunengraber, Grace-Hyun J Kim, J Paul Finn, Peng Hu
The purpose of this work was to validate a parallel imaging (PI) and compressed sensing (CS) combined reconstruction method for a recently proposed 4D non-breath-held, multiphase, steady-state imaging technique (MUSIC) cardiovascular MRI in a cohort of pediatric congenital heart disease patients. We implemented a graphics processing unit accelerated CS-PI combined reconstruction method and applied it in 13 pediatric patients who underwent cardiovascular MRI after ferumoxytol administration. Conventional breath-held contrast-enhanced magnetic resonance angiography (CE-MRA) was first performed during the first pass of ferumoxytol injection, followed by the original MUSIC and the proposed CS-PI MUSIC during the steady-state distribution phase of ferumoxytol...
November 11, 2016: NMR in Biomedicine
https://www.readbyqxmd.com/read/27862274/risk-of-fracture-in-primary-aldosteronism-a-population-based-cohort-study
#18
Vin-Cent Wu, Chia-Hui Chang, Cheng-Yi Wang, Yen-Hung Lin, Tze-Wah Kao, Po-Chih Lin, Tzong-Shinn Chu, Yuan-Shian Chang, Likwang Chen, Kwan-Dun Wu, Shih-Chieh Jeff Chueh
Primary aldosteronism (PA) is associated with increased urinary calcium excretion and osteoporosis prevalence. We studied the long-term effect of hyperaldosterone on fracture risk and possible risk mitigation via treatments, by comparing PA patients and their essential hypertension (EH) counterparts extracted by propensity score match. We used a longitudinal population database from the Taiwan National Health Insurance, and used a validated algorithm to identify PA patients diagnosed in 1997-2010. Our sample included 2533 PA patients, including 921 patients with aldosterone-producing adenoma (APA)...
November 10, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27861626/image-quality-and-stenosis-assessment-of-non-contrast-enhanced-3-t-magnetic-resonance-angiography-in-patients-with-peripheral-artery-disease-compared-with-contrast-enhanced-magnetic-resonance-angiography-and-digital-subtraction-angiography
#19
Jiayi Liu, Nan Zhang, Zhaoyang Fan, Nan Luo, Yike Zhao, Xiaoming Bi, Jing An, Zhong Chen, Dongting Liu, Zhaoying Wen, Zhanming Fan, Debiao Li
PURPOSE: To evaluate the diagnostic performance of flow-sensitive dephasing (FSD)-prepared steady-state free precession (SSFP) magnetic resonance angiography (MRA) at 3 T for imaging infragenual arteries relative to contrast-enhanced MRA (CE-MRA) and digital subtraction angiography (DSA). MATERIALS AND METHODS: A series of 16 consecutive patients with peripheral arterial disease (PAD) underwent a combined peripheral MRA protocol consisting of FSD-MRA for the calves and large field-of-view CE-MRA...
2016: PloS One
https://www.readbyqxmd.com/read/27854091/images-diagnosis-and-emergent-endovascular-treatment-of-acute-hemorrhagic-basilar-artery-dissection-a-case-report
#20
Chia-Ju Lee, Kwo-Whei Lee, Wei-Liang Chen, Chun-Ching Chiu
PURPOSE: Basilar artery dissection (BAD) is a rare but possibly fatal disease with specific neuroimage findings. The management of BAD varies. This report describes a case with hemorrhagic BAD treated by endovascular stent-assisted coil embolization. CASE REPORT: We report an 82-year-old case of acute mid basilar artery dissection complicated with acute subarachnoid hemorrhage (SAH), intraventricular hemorrhage (IVH) and hydrocephalus, which was diagnosed by complete neuroimage surveys including computed tomography angiography (CTA), magnetic resonance angiography (MRA), and digital subtraction angiography (DSA)...
June 15, 2016: Acta Neurologica Taiwanica
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