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https://www.readbyqxmd.com/read/28094067/differential-intensity-projection-for-visualisation-and-quantification-of-plaque-neovascularisation-in-contrast-enhanced-ultrasound-images-of-carotid-arteries
#1
Wing Keung Cheung, Benoy N Shah, Antonio Stanziola, Dorothy M Gujral, Navtej S Chahal, David O Cosgrove, Roxy Senior, Meng-Xing Tang
Studies have reported that intraplaque neovascularisation (IPN) is closely correlated with plaque vulnerability. In this study, a new image processing approach, differential intensity projection (DIP), was developed to visualise and quantify IPN in contrast-enhanced non-linear ultrasound image sequences of carotid arteries. DIP used the difference between the local temporal maximum and the local temporal average signals to identify bubbles against tissue non-linear artefact and noise. The total absolute and relative areas occupied by bubbles within each plaque were calculated to quantify IPN...
January 13, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28093417/cardiovascular-risk-of-patients-with-gout-seen-at-rheumatology-clinics-following-a-structured-assessment
#2
Mariano Andrés, José Antonio Bernal, Francisca Sivera, Neus Quilis, Loreto Carmona, Paloma Vela, Eliseo Pascual
OBJECTIVES: Gout-associated cardiovascular (CV) risk relates to comorbidities and crystal-led inflammation. The aim was to estimate the CV risk by prediction tools in new patients with gout and to assess whether ultrasonographic carotid changes are present in patients without high CV risk. METHODS: Cross-sectional study. Consecutive new patients with crystal-proven gout underwent a structured CV consultation, including CV events, risk factors and two risk prediction tools-the Systematic COronary Evaluation (SCORE) and the Framingham Heart Study (FHS)...
January 16, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28087176/carotid-plaque-detection-improves-the-predictive-value-of-cha2ds2-vasc-score-in-patients-with-non-valvular-atrial-fibrillation-the-arapacis-study
#3
Stefania Basili, Lorenzo Loffredo, Daniele Pastori, Marco Proietti, Alessio Farcomeni, Anna Rita Vestri, Pasquale Pignatelli, Giovanni Davì, William R Hiatt, Gregory Y H Lip, Gino R Corazza, Francesco Perticone, Francesco Violi
BACKGROUND AND AIMS: Vascular disease (VD), as assessed by history of myocardial infarction or peripheral artery disease or aortic plaque, increases stroke risk in atrial fibrillation (AF), and is a component of risk assessment using the CHA2DS2-VASc score. We investigated if systemic atherosclerosis as detected by ultrasound carotid plaque (CP) could improve the predictive value of the CHA2DS2-VASc score. METHODS: We analysed data from the ARAPACIS study, an observational study including 2027 Italian patients with non-valvular AF, in whom CP was detected using Doppler Ultrasonography...
January 4, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28071288/vulnerable-carotid-plaque-imaging-and-histopathology-without-a-dedicated-mri-receiver-coil
#4
Laura A Fitzpatrick, Nadav Berkovitz, Marlise P Dos Santos, Nevin Majeed, Rafael Glikstein, Santanu Chakraborty, John P Veinot, Grant Stotts, Alain Berthiaume, Robert Chatelain
Stroke is associated with vulnerable carotid artery plaques showing specific histopathologic features, namely a lipid-rich necrotic core, intraplaque hemorrhage, ulceration, and thin fibrous cap. While ultrasound and computed tomography (CT) can identify carotid plaques and determine the extent of stenosis, magnetic resonance imaging (MRI) provides further information regarding plaque composition and morphology. In this feasibility study, three patients with symptomatic, moderately stenosed plaques were imaged with CT angiography (CTA) and MRI (3T and 1...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28059705/emergent-endovascular-management-of-long-segment-and-flow-limiting-carotid-artery-dissections-in-acute-ischemic-stroke-intervention-with-multiple-tandem-stents
#5
S A Ansari, A L Kühn, A R Honarmand, M Khan, M C Hurley, M B Potts, B S Jahromi, A Shaibani, M J Gounis, A K Wakhloo, A S Puri
BACKGROUND AND PURPOSE: Although most cervical dissections are managed medically, emergent endovascular treatment may become necessary in the presence of intracranial large-vessel occlusions, flow-limiting and long-segment dissections with impending occlusion, and/or hypoperfusion-related ischemia at risk of infarction. We investigated the role of emergent endovascular stenting of long-segment carotid dissections in the acute ischemic stroke setting. MATERIALS AND METHODS: We retrospectively studied long-segment carotid dissections requiring stent reconstruction with multiple tandem stents (≥3 stents) and presenting with acute (<12 hours) ischemic stroke symptoms (NIHSS score, ≥4)...
November 10, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28059630/carotid-ultrasound-features-of-anomalous-left-vertebral-artery-originating-from-the-aortic-arch-proximal-to-the-left-subclavian-artery
#6
Masayuki Wakita, Ran Takei, Fumio Miyashita, Yuki Hamada, Satoshi Ohyama, Hideki Matsuoka, Hiroshi Takashima
We present three cases of anomalous origin of the left vertebral artery (LVA) detected during the evaluation of stroke. The VA usually enters the transverse foramen of the sixth cervical vertebra (C6), but an anomalous LVA originating from the aorta frequently enters at a higher level. In our series, ultrasound of the LVA showed entry at C4 in two patients and at C5 in one patient. These findings suggested anomalous LVA origin, and three-dimensional computed tomography demonstrated the LVA arising from the aorta proximal to the left subclavian arteries...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28052522/assessment-of-carotid-artery-intima-media-thickness-in-patients-with-obstructive-sleep-apnea
#7
Li-Jen Liao, Tsung-Yi Cho, Tsung-Wei Huang
OBJECTIVE: This study compares the carotid intima-media thickness (CIMT) in different severity of obstructive sleep apnea (OSA) patients, and assesses the role of OSA in carotid artery vasculopathy with control of multiple co-morbidities. STUDY DESIGN: Prospective case-control study SETTING: Tertiary referral center PARTICIPANTS: This study recruited 36 volunteers without the complaints of sleep-disordered breathing, 27 patients with mild-moderate OSA and 39 patients with severe OSA...
January 4, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28049199/systemic-atherosclerosis-relate-to-brain-arterial-diameters-the-northern-manhattan-study
#8
Jose Gutierrez, Tatjana Rundek, Ken Cheung, Ahmet Bagci, Noam Alperin, Ralph L Sacco, Clinton B Wright, Mitchell S V Elkind, Marco R Di Tullio
BACKGROUND: Phenotypic expressions of arterial disease vary throughout the body and it is not clear to what extent systemic atherosclerosis influences brain arterial remodeling. We aim to test the hypothesis that systemic atherosclerosis is associated with brain arterial diameters. METHODS: Stroke-free participants in the Northern Manhattan Study MRI subcohort in whom carotid ultrasound, transthoracic echocardiogram, and brain MRA (n = 482) were performed were included in this analysis...
January 4, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28045903/evaluation-of-freehand-b-mode-and-power-mode-3d-ultrasound-for-visualisation-and-grading-of-internal-carotid-artery-stenosis
#9
Johann Otto Pelz, Anna Weinreich, Thomas Karlas, Dorothee Saur
BACKGROUND: Currently, colour-coded duplex sonography (2D-CDS) is clinical standard for detection and grading of internal carotid artery stenosis (ICAS). However, unlike angiographic imaging modalities, 2D-CDS assesses ICAS by its hemodynamic effects rather than luminal changes. Aim of this study was to evaluate freehand 3D ultrasound (3DUS) for direct visualisation and quantification of ICAS. METHODS: Thirty-seven patients with 43 ICAS were examined with 2D-CDS as reference standard and with freehand B-mode respectively power-mode 3DUS...
2017: PloS One
https://www.readbyqxmd.com/read/28045863/postoperative-hemorrhagic-occlusive-retinal-vasculitis-a-forme-fruste-variant
#10
Roger A Goldberg, Courtney Crawford, Jeffrey S Heier
PURPOSE: To present a forme fruste variant of hemorrhagic occlusive retinal vasculitis (HORV) after uncomplicated cataract surgery performed with vancomycin in the irrigating solution. METHODS: A report of a single patient who developed HORV; the clinical features and course are described and compared with previously reported cases. RESULTS: Ultra-widefield fluorescein angiography demonstrated an occlusive vasculitis in both eyes 1 week after uncomplicated cataract surgery in which vancomycin was added to the irrigating solution...
December 29, 2016: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28043217/modulation-of-carotid-strain-by-statin-therapy-in-atherosclerosis-patients
#11
Christian Alexander Schaefer, Anna Katharina Blatzheim, Sebastian Gorgonius Passon, Kristin Solveig Pausewang, Nadjib Schahab, Georg Nickenig, Dirk Skowasch, Robert Schueler, Christoph Hammerstingl, Simon Pingel
BACKGROUND: The beneficial effect of statin therapy on the progress of atherosclerotic disease has been demonstrated by numerous studies. Vascular strain imaging is an arising method to evaluate arterial stiffness. Our study examined whether an influence of statin therapy on the vessel wall could be detected by vascular strain imaging. PATIENTS AND METHODS: 88 patients with recently detected atherosclerosis underwent an angiological examination including ankle-brachial index (ABI), pulse wave index (PWI), central puls ewave velocity and duplex ultrasound...
January 3, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28041586/thyroid-nodules-%C3%AE-guide-to-assessment-treatment-and-follow-up
#12
REVIEW
Stavroula Α Paschou, Andromachi Vryonidou, Dimitrios G Goulis
Thyroid nodules constitute by far the most common disorder of the endocrine system. Epidemiological studies have indicated that approximately 5% of women and 1% of men resident in iodine-sufficient areas have palpable thyroid nodules. However, by the age of 60 years about 50% of the general population is estimated to have at least one thyroid nodule. Indeed, the reported prevalence of a "thyroid incidentaloma" is up to 70% when neck/carotid artery ultrasound, computed tomography (CT) or magnetic resonance imaging (MRI) is performed for other indications...
February 2017: Maturitas
https://www.readbyqxmd.com/read/28030932/usage-of-perioperative-anxiety-neuromarker-for-improving-the-quality-of-life-of-a-patient-operated-on-for-critical-stenosis-of-the-internal-carotid-artery
#13
Mariusz Trystuła, Paweł Półrola, Juri Kropotov
OBJECTIVE: The aim of the study was to find a neuromarker of perioperative anxiety in a patient with critical carotid stenosis through the use of neuromarkers in Quantitative EEG (QEEG) and Event Related Potentials (ERPs). The indirect purpose of the research was evaluation of improvement in the patient's quality of life. CASE STUDY: A 45-year-old woman was admitted to the Department of Vascular Surgery and Endovascular Interventions at the John Paul II Hospital in Krakow, with the diagnosis of critical internal carotid stenosis (over 80%), confirmed by Doppler Ultrasound and Angio-CT examinations...
23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28028403/assessment-of-increase-in-aortic-and-carotid-intimal-medial-thickness-in-type-1-diabetic-patients
#14
Soha M Abd El Dayem, Ahmed A Battah, Abo El Magd El Bohy
AIM: To assess aortic and carotid intima-media thickness (aIMT and cIMT) in diabetic patients. PATIENTS AND METHODS: The study included 75 type 1 diabetic patients and 30 age and sex matched healthy volunteer. A blood sample was taken for analysis of HbA1 and lipid profile and the urine sample was taken for analysis of albumin/creatinine ratio. aIMT and cIMT via ultrasound were also done. RESULTS: cIMT & aIMT were significantly higher in diabetics...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28017911/apelin-concentrations-are-associated-with-altered-atherosclerotic-plaque-stability-mediator-levels-and-atherosclerosis-in-rheumatoid-arthritis
#15
Sule Gunter, Ahmed Solomon, Linda Tsang, Angela J Woodiwiss, Chanel Robinson, Aletta M E Millen, Gavin R Norton, Patrick H Dessein
BACKGROUND AND AIMS: Apelin-APJ signaling reduces cardiovascular disease (CVD) risk. In rheumatoid arthritis (RA), the atherosclerosis burden and plaque vulnerability to rupture are increased. We explored relationships between apelin concentrations and subclinical CVD in RA. METHODS: Apelin levels were measured in 235 (114 black, 121 white) RA patients. Associations between apelin concentrations and ultrasound determined carotid artery intima-media thickness (cIMT) and plaque, and levels of matrix metalloproteinase (MMP)-2 and -9 that mediate plaque stability and vulnerability respectively, were identified in confounder adjusted multivariate regression analysis...
November 24, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/28010920/computer-aided-diagnosis-of-coronary-artery-disease-myocardial-infarction-and-carotid-atherosclerosis-using-ultrasound-images-a-review
#16
REVIEW
Oliver Faust, U Rajendra Acharya, Vidya K Sudarshan, Ru San Tan, Chai Hong Yeong, Filippo Molinari, Kwan Hoong Ng
The diagnosis of Coronary Artery Disease (CAD), Myocardial Infarction (MI) and carotid atherosclerosis is of paramount importance, as these cardiovascular diseases may cause medical complications and large number of death. Ultrasound (US) is a widely used imaging modality, as it captures moving images and image features correlate well with results obtained from other imaging methods. Furthermore, US does not use ionizing radiation and it is economical when compared to other imaging modalities. However, reading US images takes time and the relationship between image and tissue composition is complex...
December 20, 2016: Physica Medica: PM
https://www.readbyqxmd.com/read/28010865/the-modified-operative-technique-of-partial-eversion-carotid-endarterectomy
#17
Richard McBride, Johnathan Porter, Haytham Al-Khaffaf
We report a modified operative technique termed partial eversion carotid endarterectomy (PECE). During a 9-year period (2006-2015), 352 patients underwent PECE. Indications for surgery, intraoperative details, and outcomes were recorded. The initial 185 patients had carotid duplex ultrasound imaging at 6 weeks and then at 6, 12, and 24 months. Subsequent patients had carotid imaging at 4 to 6 weeks. Indications included stroke (76), transient ischemic attack (153), and amaurosis fugax (33); 58 patients were asymptomatic, and 32 patients had surgery before cardiac surgery...
January 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27998824/plaque-surface-irregularity-and-calcification-length-within-carotid-plaque-predict-secondary-events-in-patients-with-coronary-artery-disease
#18
Shinichi Nonin, Shinichi Iwata, Kenichi Sugioka, Suwako Fujita, Naoki Norioka, Asahiro Ito, Masashi Nakagawa, Minoru Yoshiyama
BACKGROUND AND AIMS: Although comprehensive risk factor modification is recommended, a uniform management strategy does not necessarily prevent secondary events in patients with coronary artery disease (CAD). Therefore, identification of high-risk patients who may benefit from more intensive interventions may improve prognosis. Carotid ultrasound can reliably identify systemic atherosclerosis, and carotid plaque and intima-media thickness (IMT) are known independent risk factors for CAD...
November 9, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/27992874/differential-expression-of-lipoprotein-associated-phospholipase-a2-in-monocyte-subsets-impact-of-uremia-and-atherosclerosis
#19
Christof Ulrich, Bogusz Trojanowicz, Roman Fiedler, Felix Kohler, Anna-Franziska Wolf, Eric Seibert, Matthias Girndt
BACKGROUND: Monocytic products, such as lipoprotein-associated phospholipase A2 (Lp-PLA2), may participate in the development of atherosclerosis. Heterogeneity of monocytes is widely acknowledged. Classical, intermediate, and non-classical subsets can be discerned. Recently, an inflammatory, pro-atherogenic monocyte population could be identified in hemodialysis patients. In this study, we investigated the expression of Lp-PLA2 on leucocytes and different monocyte subpopulations and their possible role in uremia, inflammation, and atherosclerosis...
20, 2016: Nephron
https://www.readbyqxmd.com/read/27992335/ultrasonic-3-d-vector-flow-method-for-quantitative-in-vivo-peak-velocity-and-flow-rate-estimation
#20
Simon Holbek, Caroline Ewertsen, Hamed Bouzari, Michael Johannes Pihl, Kristoffer Lindskov Hansen, Matthias Bo Stuart, Carsten Thomsen, Michael Bachmann Nielsen, Jorgen Arendt Jensen
Current clinical ultrasound systems are limited to show blood flow movement in either 1-D or 2-D. In this paper, a method for estimating 3-D vector velocities in a plane using the Transverse Oscillation (TO) method, a 32 x 32 element matrix array, and the experimental ultrasound scanner SARUS is presented. The aim of this paper is to estimate precise flow rates and peak velocities derived from 3-D vector flow estimates. The emission sequence provides 3-D vector flow estimates at up to 1.145 frames per second in a plane, and was used to estimate 3-D vector flow in a cross sectional image plane...
December 13, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
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