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Savchev Stefan S Fetal and Perinatal Research Centre, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, - - 2014
Objective: To provide a snapshot of the current trends in managing intrauterine growth restriction (IUGR) and to assess the agreement on the gestational age and the way of delivery in different clinical scenarios. Methods: A PubMed search was performed to identify all original articles on IUGR in the last 6 ...
Santos Florentino Luciano Caetano FL Department of Electronics and Communications Engineering, Tampere University of - - 2014
Aim: Computed tomography angiography (CTA) is currently the most reliable imaging technique for evaluating and planning the treatment of atherosclerosis. The drawbacks of the technique are its low spatial resolution and challenging manual measurements. The purpose of this study was to develop a semi-automatic method to segment vessel walls, surrounding ...
Yoshimura Masayuki M Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, - - 2014
The aim of this study is to evaluate the accuracy of a newly developed quantitative method using 64-multislice computed tomography angiography (CTA) to detect coronary in-stent restenosis (ISR). CTA was performed in 45 patients who underwent stent implantation (79 lesions) and the accuracy to diagnose ISR was evaluated by comparing ...
van Ditzhuijzen N S NS Department of Cardiology, Thoraxcenter, BA-585, Erasmus University Medical Center, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The - - 2014
Intracoronary Fourier-Domain optical coherence tomography (FD-OCT) enables imaging of the coronary artery within 2-4 seconds, a so far unparalleled speed. Despite such fast data acquisition, cardiac and respiratory motion can cause artefacts due to longitudinal displacement of the catheter within the artery. We studied the influence of longitudinal FD-OCT catheter displacement ...
Ouyang Yanling - - 2014
Recently it was shown that retinal vessel diameters could be measured using spectral domain optical coherence tomography (OCT). It has also been suggested that retinal vessels manifest different features on spectral domain OCT (SD-OCT) depending on whether they are arteries or veins. Our study was aimed to present a reliable ...
Cebral Juan R JR Center for Computational Fluid Dynamics, George Mason University, Fairfax, Virginia, - - 2014
It is thought that aneurysms evolve as the result of progressive degradation of the wall in response to abnormal hemodynamics characterized by either high or low wall shear stress (WSS). To investigate the effects of these two different hemodynamic pathways in a series of cerebral aneurysms with known rupture sites. ...
van den Oord S C H SC Cardiology, Erasmus Medical Center, - - 2014
Purpose: Intraplaque neovascularization (IPN) is an increasingly studied marker of the vulnerable atherosclerotic plaque, and contrast-enhanced ultrasound (CEUS) is an in vivo imaging technique for the assessment of IPN. The purpose of this study was to test novel quantification methods for the detection of carotid IPN using CEUS. Materials and ...
Choi Gilwoo - - 2014
Accurate quantification of changes in length, curvature, and bifurcation angles of coronary arteries due to cardiac motion is important for the design of coronary stents. A new method is developed to describe the dynamic characteristics of the human coronary artery. From cardiac-gated computed tomography (CT) data, three-dimensional (3D) surface geometry ...
Tang Hui H Biomedical Imaging Group Rotterdam, Department of Medical Informatics, Erasmus MC, P.O. Box 2040, 3000 CA , Rotterdam, The Netherlands, - - 2014
Intra-plaque hemorrhage (IPH) is associated with plaque instability. Therefore, the presence and volume of IPH in carotid arteries may be relevant in predicting the progression of atherosclerotic disease and the occurrence of clinical events. The aim of our work was to develop and evaluate a method for semi-automatic IPH segmentation ...
Jaffer Usman U Department of Vascular Surgery, Imperial College NHS Trust, Saint Mary's Hospital , London, United Kingdom - - 2014
Abstract Background: The incidence of infected femoral artery pseudoaneurysms is likely to increase with increasing numbers of femoral artery interventions. Methods: Case report and review of literature. Results: We present a case of dehiscence of a vein patch repair of an infected femoral pseutoaneurysm treated with ligation of vessels and ...
Honarmand Amir R AR Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, - - 2014
To assess the adjunctive diagnostic value of intra-arterial cone-beam CT angiography (IA-CBCTA) relative to digital subtraction angiography (DSA) in the anatomic identification/localization of intracranial/spinal arteriovenous fistulas (AVFs) and utility for surgical/endovascular treatment planning. Retrospectively, two blinded observers scored DSA and IA-CBCTA images of 32 patients with intracranial/spinal AVFs based on ...
Kerut Edmund Kenneth EK Heart Clinic of Louisiana, Marrero, - - 2014
We describe our first 20 cases of cryoablation of atrial fibrillation (AF) using transesophageal echocardiography (TEE). Continuous procedural monitoring with TEE by a cardiologist and senior sonographer assists the electrophysiologist in performance of the cryoballoon procedure of AF. Previously using intracardiac echocardiography (ICE) we have found TEE to have better ...
Chen Shuo-Tsung ST Institute of Biomedical Engineering, National Taiwan University, Taipei, 10617, Taiwan, Republic of China, - - 2014
This work presents a new method for segmenting coronary arteries automatically in computed tomography angiography (CTA) data sets. The method automatically isolates heart and coronary arteries from surrounding structures and search for the probable location of coronary arteries by 3D region growing. Based on the dilation of the probable location, ...
MacTaggart Jason N JN Department of Surgery, University of Nebraska Medical Center, Omaha, NE, USA. Electronic address: - - 2014
High failure rates of femoropopliteal artery reconstruction are commonly attributed to complex 3D arterial deformations that occur with limb movement. The purpose of this study was to develop a method for accurate assessment of these deformations. Custom-made stainless-steel markers were deployed into 5 in situ cadaveric femoropopliteal arteries using fluoroscopy. ...
Horinaka Shigeo S Department of Cardiology and Nephrology, Dokkyo Medical University, Mibu, Tochigi 321-0293, Japan. Electronic address: - - 2014
The cardio-ankle vascular index (CAVI) is an arterial stiffness index based on the stiffness parameter β, which is essentially independent of blood pressure. The objective of this study was to determine whether CAVI correlates with the regional stiffness parameter β and pulse wave velocity (PWV) in the thoracic aorta calculated ...
Xiang Jianping J Toshiba Stroke and Vascular Research Center, University at Buffalo, The State University of New York, Buffalo, New York, - - 2014
We have previously developed three logistic regression models for discriminating intracranial aneurysm rupture status from 119 aneurysms based on hemodynamic-morphological parameters. In this study we exploit their use as a tool for predicting the risk of rupture of aneurysms with a defined Rupture Resemblance Score (RRS). We collected three-dimensional images ...
Pavitt Christopher W CW Department of Cardiology, Royal Brompton Hospital, Sydney Street, London, SW3 6NP, UK, - - 2014
We validate a method of calcium scoring on CT coronary angiography (CTCA) and propose an algorithm for the assessment of patients with stable chest pain. 503 consecutive patients undergoing coronary artery calcium score (CACS) and CTCA were included. A 0.1 cm(2) region of interest was used to determine the mean contrast ...
Ysa August A Vascular Surgery Department, Hospital de Cruces, Barakaldo, Spain. Electronic address: - - 2014
Antegrade puncture is a routinely used technique of obtaining access to the common femoral artery to perform infrainguinal interventions. However, antegrade arterial access can be challenging in the presence of hostile, scarred groins, obesity, or a high common femoral artery bifurcation. A simple method of converting a retrograde femoral access ...
Baka N - - 2014
2D/3D registration of patient vasculature from preinterventional computed tomography angiography (CTA) to interventional X-ray angiography is of interest to improve guidance in percutaneous coronary interventions. In this paper we present a novel feature based 2D/3D registration framework, that is based on probabilistic point correspondences, and show its usefulness on aligning ...
Minato Naoki N Department of Thoracic and Cardiovascular Surgery, Hirakata Hospital, Kansai Medical University, Hirakata City, Osaka, Japan. Electronic address: - - 2014
In this study, we present an inexpensive and effective method for providing a secure and hemostatic anastomosis using autologous adventitia obtained from a dissected or aneurysmal wall. The resected aortic wall is separated between the adventitia and media, and a soft, 2 × 10-cm adventitial strip is overlaid to cover ...
Pavo Noemi N Department of Cardiology, Medical University of Vienna, Vienna, - - 2014
Aims: To evaluate the short-, mid- and long-term safety, efficacy and vascular physiology of Axetis silicon dioxide (SiO2, abrading the micropores) inert-coated stent implantation in a randomised preclinical setting. Methods and results: Coronary arteries of domestic pigs were randomised to receive either Axetis or BMS (same design) stents with one-, ...
Choi Young Joon YJ Department of Mechanical Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD, 21218, - - 2014
A computational study of the flow-structure interaction of a bileaflet mechanical heart valve in the mitral position is presented. Flow in a simple model of the left ventricle is simulated using an immersed boundary method, and the dynamics of the valve leaflets are solved in a fully-coupled manner with the ...
Vukicevic Arso M AM Faculty of Engineering, University of Kragujevac, Sestre Janjic 6, Kragujevac, 34000, Serbia, - - 2014
Despite a lot of progress in the fields of medical imaging and modeling, problem of estimating the risk of in-stent restenosis and monitoring the progress of the therapy following stenting still remains. The principal aim of this paper was to propose architecture and implementation details of state of the art ...
Morales-Roselló José J Servicio de Obstetricia, Hospital Universitario y Politécnico La Fe, Valencia, - - 2014
Abstract Objectives. Blood flow to the fetal brain is supplied by two vascular systems: the vertebral artery (VA) and the internal carotid artery with its anatomical continuation, the middle cerebral artery (ICA/MCA). In this work our aim was to establish consistent reference values for the comparative study of both arterial ...
Keehn Louise L aKings College London, British Heart Foundation Centre bDepartment of Paediatric Nephrology, Evelina Children's Hospital, Guys & St Thomas NHS Foundation Trust, London, - - 2014
Pulse wave velocity (PWV), a measure of arterial stiffness strongly predictive of cardiovascular risk in adults, is usually measured by sequential ECG-referenced carotid and femoral tonometry. A simplified technique, more suitable for use in children, employs simultaneous volumetric recording from a sensor applied over the carotid artery and a cuff ...
Kumar Gideon Praveen GP Institute of High Performance Computing, A*STAR, Singapore 138632, - - 2014
Percutaneous heart valve replacement is gaining popularity, as more positive reports of satisfactory early clinical experiences are published. However this technique is mostly used for the replacement of pulmonary and aortic valves and less often for the repair and replacement of atrioventricular valves mainly due to their anatomical complexity. While ...
Jickling Glen C GC From the Department of Neurology and the MIND Institute (G.C.J.), University of California at Davis, Sacramento; and the Department of Neurology and Stroke Program (S.C.), Wayne State University, Detroit, - - 2014
Despite recent advances in medical and surgical treatments to prevent arterial stroke, the cerebrovascular burden of atherosclerosis remains high. Factors associated with a high risk for arterial stroke include stenosis >50% and ulcerated plaque. Given the important role of inflammation in atherosclerotic plaque progression and rupture, a measure of plaque ...
Karmonik C C Department of Neurosurgery, Houston Methodist, Houston, Texas, - - 2014
To quantitatively compare hemodynamics simulated with steady-state and transient computational fluid dynamics (CFD) simulations in cerebral aneurysms with single inflow, with focus at the aneurysm ostium. Transient and steady-state CFD simulations were performed in 10 cerebral aneurysms. Distributions and average values for pressure, helicity, vorticity, and velocity were qualitatively compared ...
Cebral J R JR From the Center for Computational Fluid Dynamics (J.R.C., F.M., M.R.), College of Sciences, George Mason University, Fairfax, Virginia; and Departments of Radiology (S.H., Y.-H.D., B.J.E., R.K., D.F.K.) and Neurosurgery (D.F.K.), Mayo Clinic, Rochester, - - 2014
Predicting the outcome of flow diversion treatment of cerebral aneurysms remains challenging. Our aim was to investigate the relationship between hemodynamic conditions created immediately after flow diversion and subsequent occlusion of experimental aneurysms in rabbits. The hemodynamic environment before and after flow-diversion treatment of elastase-induced aneurysms in 20 rabbits was ...
Labib Mohamed A MA 1Division of Neurosurgery, Department of Surgery, University of Ottawa, Ottawa, ON, Canada 2Department of Neurosurgery, The Ohio State University, Columbus, Ohio, USA 3Department of Otolaryngology -Head and Neck Surgery, The Ohio State University, Columbus, Ohio, USA 4Department of Otolaryngology, University of Ottawa, Ottawa, ON, Canada 5Aurora Neuroscience Innovation Institute, Aurora St. Luke's Medical Center, Milwaukee, WI, - - 2014
Injuring the internal carotid artery (ICA) is a feared complication of endoscopic endonasal approaches. To introduce a comprehensive ICA classification scheme pertinent to safe endoscopic endonasal cranial base surgery. Anatomical dissections were performed in thirty-three cadaveric specimens (bilateral). Anatomical correlations were analyzed. Based on anatomical correlations, the ICA may be ...
Brunel H H Service de neuroradiologie, hôpital de La Timone, CHU de Marseille, 264, rue Saint-Pierre, 13385 Marseille cedex 5, France. Electronic address: - - 2014
Carotid cavernous sinus fistulas are a potentially severe pathology. Their basic standard treatment is an occlusion of the CCF performed by retrograde venous catheterization via the inferior petrous sinus. When the inferior petrous sinuses are occluded, other alternative venous routes are possible with various subsequent difficulties and risks. We report ...
Loveland-Jones Catherine E CE Department of Surgery, Temple University, Philadelphia, PA - - - 2014
This report presents a new animal model of arteriovenous fistula (AVF) with attention given to surgical techniques as well as hemodynamic and pathologic measurements. Of note, this model was created with a tunneled central catheter with the purpose of studying therapeutic interventions, including hemodialysis. Side-common carotid artery to end-external jugular ...
Rubinshtein Ronen R Cardiology Department, Lady Davis Carmel Medical Center, Haifa, - - 2014
Aims: Accurate positioning of aorto-ostial coronary stents is challenging. Coronary CT angiography (CCTA) allows detailed imaging of the coronary sinuses and implanted stents. We utilised CCTA to evaluate the accuracy of aorto-ostial stenting and to assess the efficacy of conventional angiography for guiding these procedures. Methods and results: We analysed ...
Ankri Rinat - - 2014
In this study we report the use of gold nanorods (GNRs) as absorption contrast agents in the diffusion reflection (DR) method for the in vivo detection of atherosclerotic injury. The early detection and characterization of atherosclerotic vascular disease (ASVD) is considered to be one of the greatest medical challenges today. ...
Choi Jin-Ho JH 1Cardiovascular Imaging Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, - - 2014
-Coronary collateral flow is alternative source of myocardial perfusion in patients with totally occluded coronary arteries. Clinical evaluation of collateral flow has been limited by the need of invasive measurements. We investigated whether non-invasive coronary computed tomography (CT) angiography can evaluate the angiographic extent of coronary collateral flow. -We enrolled ...
Sugawara Jun J aHuman Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan bCardiovascular Aging Research Laboratory, Department of Kinesiology and Health Education, The University of Texas at Austin, Austin, Texas, USA cDepartment of Health and Physical Education, Kokugakuin University, Tokyo, - - 2014
Brachial-ankle pulse wave velocity (baPWV) is one of few indices of arterial stiffness that has been incorporated into a routine clinical setting. baPWV is associated with markers of central arterial stiffness, but the absolute values are substantially higher than other PWV measures. We tested the hypothesis that the height-based formulas ...
Wright James M JM Department of Neurological Surgery, The Neurological - - 2014
Since the first surgery for an intracranial aneurysm in 1931, neurological surgeons have long strived to determine the optimal methods of surgical correction. Significant challenges of aneurysm clipping include intraoperative rupture and complex dome morphology. Hypothermia, cardiopulmonary bypass, pharmacologically induced hypotension, and cardiac standstill are a few of the methodologies ...
Anzai Hitomi - - 2014
Background: A modern technique for the treatment of cerebral aneurysms involves insertion of a flow diverter stent. Flow stagnation, produced by the fine mesh structure of the diverter, is thought to promote blood clotting in an aneurysm. However, apart from its effect on flow reduction, the insertion of the metal ...
Zhang Bin B Department of Cardiology of Peking University First Hospital, Beijing 100034, - - 2014
To study the safety of the novel high nitrogen nickel-free austenitic stainless steel bare metal stents (BMS) in a recognized porcine coronary model and to select a better grid structure of it. Three types of stents were randomly implanted in different coronary arteries of the same pig: 316L stainless steel ...
Schurink G W GW Department of Surgery Maastricht University Medical Center Maastricht, the Netherlands - - - 2014
Endovascular treatment of short neck infrarenal and juxtarenal abdominal aortic aneurysms (AAA) is feasible. Many different techniques have been used, including standard stent-grafts with or without adjuncts as endoanchors or chimney grafts, fenestrated stent-grafts or even newer concepts like the multilayer flow modulating stent. The purpose of this article was ...
Törnqvist P P Vascular Center, Skåne University Hospital, Malmö, Sweden - - - 2014
Endoleaks after endovascular aortic repair (EVAR) are a common cause of treatment failure and secondary interventions. Endoleak classification is important to determine both prognosis as well as need for treatment. With increasingly complex endovascular aortic procedures, endoleak classification according to the original classification has become more difficult. A classification into ...
Lee Won-Young WY Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, - - 2014
Various surgical techniques have been developed for the repair of an interrupted aortic arch. However, tension and Gothic arch formation at the anastomotic site have remained major problems for these techniques: Excessive tension causes arch stenosis and left main bronchus compression, and Gothic arch configuration is related to cardiovascular complications. ...
Aziz Zeeshan S ZS St. Augustine Ear, Nose and Throat, St. Augustine, FL, - - 2014
The challenges of endoscopic sinus surgery lie in the complexity of the anatomy of the nasal vault and side walls and the proximity to critical structures. Additionally, operating in a three-dimensional space while relying on a two-dimensional image for surgical navigation can be a disorienting task. Successful sinus surgery relies ...
Lee Hyoun-Ho HH Department of Neurosurgery, College of Medicine, Yeungnam University, Daegu, - - 2014
General anesthesia is often preferred for endovascular coiling of intracranial aneurysm at most centers. But in the authors' hospital, it is performed under monitored anesthesia care (MAC) using dexmedetomidine. To determine the feasibility and safety of this approach, the authors reviewed our initial experience. Retrospective data was analyzed from July ...
Leone Antonio Maria AM Department of Cardiovascular Sciences, Catholic University of the Sacred Heart, Rome, - - 2014
Aims: Despite the fact that fractional flow reserve (FFR) is better than angiography in guiding PCI, in the real world the choice to perform PCI is generally based on angiography. Three-dimensional quantitative coronary angiography (3D-QCA) may increase the accuracy of angiography, especially in intermediate coronary artery stenosis (ICAS). The aim ...
Prasad Rahul M - - 2014
Cell-based perfusion studies have provided great insight into fluid-sensing mechanisms, such as primary cilia in the renal and vascular systems. However, the intrinsic limitations of in vitro cell culture, such as the inability to reflect cellular organization within tissues, has distanced observed paradigms from possible clinical developments. Here we describe ...
Hanratty Colm - - 2014
In contemporary practice there are three main methods that can be employed when attempting to open a chronic total occlusion (CTO) of a coronary artery; antegrade wire escalation, antegrade dissection re-entry and retrograde dissection re-entry. This editorial will attempt to clarify the anatomical features that can be identified to help ...
Tuan-Mu Ho-Yi HY Department of Biomedical Engineering, National Cheng Kung University, #1 University Rd., Tainan, 701, - - 2014
Most tissues, including those to be decellularized for tissue engineering applications, are frozen for long term preservation. Such conventional cryopreservation has been shown to alter the structure and mechanical properties of tissues. Little is known, however, how freezing affects decellularization of tissues. The purpose of this study was two-fold: to ...
Abouei Mehrizi A A Biomechanics Lab, Life Science Engineering Department, Faculty of New Sciences and Technologies, University of Tehran , Amir Abad, North Kargar Street, Tehran , Iran - - 2014
Abstract Palpation is one of the applied methods that surgeons usually use during surgery in order to verify the health condition of a tissue/organ. In fact, most of surgical assessments are based on analysis of the force feedback received from tissue/organ via palpation. Although palpation has a key role in ...
Stenzel Fabian F Department of Radiology, Charité - Universitätsmedizin Berlin, Campus Charité Mitte, Charitéplatz 1, 10117, Berlin, - - 2014
Comparison of bolus tracking with a fixed threshold versus a manual fast start for coronary CT angiography. We retrospectively analysed 320-row coronary CT angiography of 50 patients with suspected or known coronary artery disease. Twenty-five examinations were initiated by a bolus tracking method (group 1), 25 examinations with a manual ...
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