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arterial wall thickness, ultrasound

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https://www.readbyqxmd.com/read/28521772/feasibility-and-relevance-of-compound-strain-imaging-in-non-stenotic-arteries-comparison-between-individuals-with-cardiovascular-diseases-and-healthy-controls
#1
Martijn F H Maessen, Thijs M H Eijsvogels, Ayla Grotens, Maria T E Hopman, Dick H J Thijssen, Hendrik H G Hansen
BACKGROUND: Compound strain imaging is a novel method to noninvasively evaluate arterial wall deformation which has recently shown to enable differentiation between fibrous and (fibro-)atheromatous plaques in patients with severe stenosis. We tested the hypothesis that compound strain imaging is feasible in non-stenotic arteries and provides incremental discriminative power to traditional measures of vascular health (i.e., distensibility coefficient (DC), central pulse wave velocity [cPWV], and intima-media thickness [IMT]) for differentiating between participants with and without a history of cardiovascular diseases (CVD)...
May 18, 2017: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28397945/assessment-of-crohn-s-disease-activity-by-doppler-sonography
#2
Ying Na, Jian Zhou, Xiang-Min Xiao, Wen-Xing Zhang, Hong-Lei Gao, Yang Wang, Xiao-Yan Han, Zuo-Cheng Sun, Hui-Min Xu
To investigate the diagnostic accuracy of ultrasound for evaluation of inflammatory activity in patients with Crohn's disease (CD). Methods: Fifty-six patients with histologically proven CD (39 with active, 17 with inactive disease) and 30 healthy volunteers as a control group were enrolled in the study at WeiFang People's Hospital, Weifang Province, China from October 2012 to December 2014. Bowel wall thickness, and vascularity pattern were measured by Doppler ultrasound. Results: There was a significant difference in flow volume of the superior mesenteric artery (585 ± 235 ml/min) in the patients with active disease, compared with those with inactive disease (401 ± 238 ml/min) and the control group (390 ± 189 ml/min, p less than 0...
April 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28377191/serum-pentraxin-3-is-associated-with-signs-of-arterial-alteration-in-women-with-preeclampsia
#3
Tansim Akhter, Anna-Karin Wikström, Marita Larsson, Anders Larsson, Gerhard Wikström, Tord Naessen
BACKGROUND: Preeclampsia (PE) in pregnancy is a state of exaggerated inflammation and is associated with an increased risk of cardiovascular disease (CVD) later in life. Levels of pentraxin 3 (PTX3), a novel inflammation marker, are increased during PE and in individuals with CVD. The primary aim of this study was to assess whether serum PTX3 in women with PE is associated with adverse arterial effects; a thicker intima and higher intima/media (I/M) ratio in the common carotid artery (CCA)...
March 24, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28376791/definition-of-common-carotid-wall-thickness-affects-risk-classification-in-relation-to-degree-of-internal-carotid-artery-stenosis-the-plaque-at-risk-parisk-study
#4
J Steinbuch, A C van Dijk, Fhbm Schreuder, Mtb Truijman, J Hendrikse, P J Nederkoorn, A van der Lugt, E Hermeling, Apg Hoeks, W H Mess
BACKGROUND: Mean or maximal intima-media thickness (IMT) is commonly used as surrogate endpoint in intervention studies. However, the effect of normalization by surrounding or median IMT or by diameter is unknown. In addition, it is unclear whether IMT inhomogeneity is a useful predictor beyond common wall parameters like maximal wall thickness, either absolute or normalized to IMT or lumen size. We investigated the interrelationship of common carotid artery (CCA) thickness parameters and their association with the ipsilateral internal carotid artery (ICA) stenosis degree...
April 4, 2017: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28374705/-effects-of-chronic-tabacco-smoking-on-the-cerebral-blood-flow
#5
N V Zakharchuk, V A Nevzorova, V M Chertok, N S Sarafanova
AIM: To study an effect of chronic smoking on cerebral hemodynamics and cerebrovascular reactivity in different segments of the arterial system of the brain in men. MATERIAL AND METHODS: Male patients enrolled in the study were divided into two groups: controls (n=11) and smokers (n=24) with index 30.7 pack-year smoking history. Haemorheological parameters: viscosity of blood, aggregation of erythrocytes, hematocrit, fibrinogen were evaluated in both groups. Using carotid duplex ultrasound (MyLab 50 Esaote, Italy), intima-media thickness (IMT) of common carotid arteries (CCA) was measured...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28372789/automatic-media-adventitia-ivus-image-segmentation-based-on-sparse-representation-framework-and-dynamic-directional-active-contour-model
#6
Fahimeh Sadat Zakeri, Seyed Kamaledin Setarehdan, Somayye Norouzi
Segmentation of the arterial wall boundaries from intravascular ultrasound images is an important image processing task in order to quantify arterial wall characteristics such as shape, area, thickness and eccentricity. Since manual segmentation of these boundaries is a laborious and time consuming procedure, many researchers attempted to develop (semi-) automatic segmentation techniques as a powerful tool for educational and clinical purposes in the past but as yet there is no any clinically approved method in the market...
March 25, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28366179/effect-of-self-expanding-carotid-stents-on-plaque-thickness-and-vessel-diameter
#7
Rafael Martínez-Pérez, Graeme Marchuk, Donald H Lee, David M Pelz, Stephen P Lownie
BACKGROUND: In vitro models have suggested that stents affect atherosclerotic plaques symmetrically because of their outward radial forces. We evaluated the effects of stents on carotid plaque and the arterial wall using carotid ultrasound in carotid stenting patients to see whether these effects were borne out in vivo. METHODS: From a carotid stent database, 30 consecutive patients were selected. All had carotid Doppler ultrasound performed pre- and poststenting...
April 3, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28322592/intravascular-pulmonary-venous-ultrasound-imaging-for-catheter-ablation-of-atrial-fibrillation
#8
Gabriel Cismaru, Serban Schiau, Lucian Muresan, Radu Rosu, Mihai Puiu, Gabriel Gusetu, Dana Pop, Dumitru Zdrenghea
Atrial fibrillation is the most common cardiac arrhythmia. The development of electroanatomical mapping is an increase demand for advanced intracardiac imaging techniques of the left atrium and pulmonary veins. IVUS can demonstrate quantitative changes like lumen and wall thickness as well as qualitative changes of the pulmonary wall. IVUS could also provide relevant real time imaging of the atrial and pulmonary venous wall during catheter ablation. Areas covered: The Medline and Embase databases were searched for preclinical and clinical studies of IVUS in patients with ablation of atrial fibrillation or left atrial arrhythmias...
April 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28317160/contrast-enhanced-ultrasonography-vs-b-mode-ultrasound-for-visualization-of-intima-media-thickness-and-detection-of-plaques-in-human-carotid-arteries
#9
Benoy N Shah, Navtej S Chahal, Jaspal S Kooner, Roxy Senior
BACKGROUND: Carotid intima-media thickness (IMT) and plaque are recognized markers of increased risk for cerebrovascular events. Accurate visualization of the IMT and plaques is dependent upon image quality. Ultrasound contrast agents improve image quality during echocardiography-this study assessed whether contrast-enhanced ultrasound (CEUS) improves carotid IMT visualization and plaque detection in an asymptomatic population. METHODS & RESULTS: Individuals free from known cardiovascular disease, enrolled in a community study, underwent B-mode and CEUS carotid imaging...
May 2017: Echocardiography
https://www.readbyqxmd.com/read/28154582/is-carotid-artery-ultrasound-still-useful-method-for-evaluation-of-atherosclerosis
#10
REVIEW
Gee-Hee Kim, Ho-Joong Youn
Carotid ultrasound is an imaging modality that allows non-invasive assessment of vascular anatomy and function. Carotid intima-media thickness (IMT) has been shown to predict cardiovascular (CV) risk in multiple large studies. However, in 2013, American College of Cardiology/American Heart Association guidelines designated that the carotid IMT as class III evidence level was not recommended for use in clinical practice as a routine measurement of risk assessment for a first atherosclerotic CV event. Following the announcement of this guideline, combined common carotid IMT and plaque, including plaque tissue characterization and plaque burden, using 3D ultrasound was reported to be better than either measurement alone in a variety of studies...
January 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/27964766/both-high-and-low-plasma-levels-of-25-hydroxy-vitamin-d-increase-blood-pressure-in-a-normal-rat-model
#11
COMPARATIVE STUDY
Naghmeh Z Mirhosseini, Steven J Knaus, Kaylee Bohaychuk, Jaswant Singh, Hassan A Vatanparast, Lynn P Weber
The lower threshold plasma 25-hydroxy vitamin D (25(OH)D) level for optimal cardiovascular health is unclear, whereas the toxicity threshold is less clear. The aim of this study was to examine the cardiovascular-vitamin D dose-response curve in a normal rat model. Doses of cholecalciferol ranged from deficiency to toxic levels (equivalent to human doses of 0, 0·015, 0·25 and 3·75mg/d) for 4 weeks, and then cardiovascular health was examined using blood pressure telemetry and high-resolution ultrasound in normal male rats (n 16/group, 64 rats total)...
December 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27925647/left-ventricular-function-assessed-by-one-point-carotid-wave-intensity-in-newly-diagnosed-untreated-hypertensive-patients
#12
Olga Vriz, Serena Favretto, Joanna Jaroch, Rychard Wojciech, Eduardo Bossone, Caterina Driussi, Francesco Antonini-Canterin, Paolo Palatini, Krystyna Loboz-Grudzien
OBJECTIVES: To investigate whether newly diagnosed untreated hypertensive patients show higher left ventricular (LV) contractility, as assessed by traditional echocardiographic indices and carotid wave intensity (WI) parameters, including amplitude of the peak during early (W1 ) and late systole (W2 ). METHODS: A total of 145 untreated hypertensive patients were compared with 145 age- and sex-matched normotensive subjects. They underwent comprehensive echocardiography and WI analysis...
January 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27908160/correspondence-optimization-in-2d-standardized-carotid-wall-thickness-map-by-description-length-minimization-a-tool-for-increasing-reproducibility-of-3d-ultrasound-based-measurements
#13
Yimin Chen, Bernard Chiu
PURPOSE: The previously described 2D standardized vessel-wall-plus-plaque thickness (VWT) maps constructed from 3D ultrasound vessel wall measurements using an arc-length (AL) scaling approach adjusted the geometric variability of carotid arteries and has allowed for the comparisons of VWT distributions in longitudinal and cross-sectional studies. However, this mapping technique did not optimize point correspondence of the carotid arteries investigated. The potential misalignment may lead to errors in point-wise VWT comparisons...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27857821/carotid-artery-atherosclerosis-in-patients-with-active-rheumatoid-arthritis-predictors-of-plaque-occurrence-and-progression-over-24-weeks
#14
Janet E Pope, Tatiana Nevskaya, Lillian Barra, Grace Parraga
INTRODUCTION: This study evaluated the prevalence and progression of subclinical carotid artery atherosclerosis in active rheumatoid arthritis (RA). METHODS: Carotid arteries of RA patients were scanned using 3D ultrasound at baseline and 24 weeks for total plaque area, vessel wall volume, and intima-media thickness (IMT), as well as arterial stiffness measured using pulse wave velocity. Variables related to inflammation, lipids and cardiovascular (CV) risk were assessed for associations with plaque progression...
2016: Open Rheumatology Journal
https://www.readbyqxmd.com/read/27846838/effects-of-shenlian-extract-on-experimental-atherosclerosis-in-apoe-deficient-mice-based-on-ultrasound-biomicroscopy
#15
Yan Guo, Xu-Cen Liu, Ya-Jie Wang, Qi Li, Qing Yang, Xiao-Gang Weng, Ying Chen, Wei-Yan Cai, Xiao-Xi Kan, Xi Chen, He-Fei Huang, Xiao-Xin Zhu, Yu-Jie Li
BACKGROUND: This study directly and dynamically investigated the effects of SL extract (i.e., a combination of Radix Salviae miltiorrhizae and Andrographis paniculata extract) on plaque progression in vivo by high resolution ultrasound biomicroscopy (UBM). METHODS: An atherosclerosis model was established by placing a perivascular collar on the right common carotid artery in apolipoprotein E-deficient (ApoE(-/-)) mice. Thickness, plaque area and local blood flow were observed by UBM, pathological changes were observed by histochemical staining, and lipid levels were measured by respective commercially available kits...
November 15, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27830569/a-review-on-atherosclerotic-biology-wall-stiffness-physics-of-elasticity-and-its-ultrasound-based-measurement
#16
REVIEW
Anoop K Patel, Harman S Suri, Jaskaran Singh, Dinesh Kumar, Shoaib Shafique, Andrew Nicolaides, Sanjay K Jain, Luca Saba, Ajay Gupta, John R Laird, Argiris Giannopoulos, Jasjit S Suri
Functional and structural changes in the common carotid artery are biomarkers for cardiovascular risk. Current methods for measuring functional changes include pulse wave velocity, compliance, distensibility, strain, stress, stiffness, and elasticity derived from arterial waveforms. The review is focused on the ultrasound-based carotid artery elasticity and stiffness measurements covering the physics of elasticity and linking it to biological evolution of arterial stiffness. The paper also presents evolution of plaque with a focus on the pathophysiologic cascade leading to arterial hardening...
December 2016: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/27810621/concise-biomarker-for-spatial-temporal-change-in-three-dimensional-ultrasound-measurement-of-carotid-vessel-wall-and-plaque-thickness-based-on-a-graph-based-random-walk-framework-towards-sensitive-evaluation-of-response-to-therapy
#17
Bernard Chiu, Weifu Chen, Jieyu Cheng
Rapid progression in total plaque area and volume measured from ultrasound images has been shown to be associated with an elevated risk of cardiovascular events. Since atherosclerosis is focal and predominantly occurring at the bifurcation, biomarkers that are able to quantify the spatial distribution of vessel-wall-plus-plaque thickness (VWT) change may allow for more sensitive detection of treatment effect. The goal of this paper is to develop simple and sensitive biomarkers to quantify the responsiveness to therapies based on the spatial distribution of VWT-Change on the entire 2D carotid standardized map previously described...
October 19, 2016: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/27794213/the-relationship-between-the-metabolic-syndrome-and-arterial-wall-thickness-a-mosaic-still-to-be-interpreted
#18
Angelo Scuteri, Oscar H Franco, Henry Völzke, Min-Ho Shin, Sun-Seog Kweon, Ernst Rietzschel, Ligita Ryliškytė, Irina Strazhesko, Chen-Huan Chen, Edward G Lakatta, Peter M Nilsson
BACKGROUND AND AIMS: We aimed to identify clusters of metabolic syndrome (MetS) components, risky for extremely high intima-media thickness. METHODS: We studied 41,513 volunteers (men and women) from eleven cohorts worldwide, participating in the MARE (Metabolic syndrome and Artery REsearch) Consortium. RESULTS: Specific clusters of MetS components - high triglycerides-high blood pressure-abdominal obesity (TBW), low HDL cholesterol-high blood pressure-abdominal obesity (HBW), high glucose-high blood pressure-abdominal obesity (GBW) - were accompanied by a 50-90% significantly greater likelihood of presenting extremely high intima-media thickness (via ultrasound of carotid artery, CCA IMT), after controlling for age, sex, smoking, non-HDL cholesterol, and presence of diabetes mellitus...
December 2016: Atherosclerosis
https://www.readbyqxmd.com/read/27780271/quantification-of-coupled-stiffness-and-fiber-orientation-remodeling-in-hypertensive-rat-right-ventricular-myocardium-using-3d-ultrasound-speckle-tracking-with-biaxial-testing
#19
Dae Woo Park, Andrea Sebastiani, Choon Hwai Yap, Marc A Simon, Kang Kim
Mechanical and structural changes of right ventricular (RV) in response to pulmonary hypertension (PH) are inadequately understood. While current standard biaxial testing provides information on the mechanical behavior of RV tissues using surface markers, it is unable to fully assess structural and mechanical properties across the full tissue thickness. In this study, the mechanical and structural properties of normotensive and pulmonary hypertension right ventricular (PHRV) myocardium through its full thickness were examined using mechanical testing combined with 3D ultrasound speckle tracking (3D-UST)...
2016: PloS One
https://www.readbyqxmd.com/read/27753967/os-10-06-the-impact-of-well-controlled-blood-pressure-levels-on-arterial-properties-in-essential-hypertensives
#20
Paolo Pauletto, Massimo Puato, Marcello Rattazzi, Roberta Buso, Giovanni Boschetti, Marta Zanon, Claudio Fania, Paolo Palatini
OBJECTIVE: The aim of this study was to evaluate the impact of well controlled blood pressure (BP) levels on structural and functional properties of arteries in essential hypertensives. DESIGN AND METHOD: We studied 80 young hypertensives (mean age 49 yo) allocated either to pharmacological treatment (55 of 80) or to lifestyle modifications (25 of 80) for at least 12 months (mean 38 months) to maintain target BP. Follow-up visits were scheduled every 6 months. Office BP was taken three times by the same doctor at the time of the study...
September 2016: Journal of Hypertension
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