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Nakamura A A Department of Cardiology, Iwate Prefectural Central Hospital, 1-4-1, Ueda, Morioka, Iwate, 020-0096, Japan, - - 2014
To protect against a distal embolism in the vertebral artery, subclavian artery stenting can be achieved by positioning a filter device or balloon in the ipsilateral vertebral artery. However, treatment with these devices is not easy, and it is also an inaccurate method for cerebral protection. We developed a balloon-tipped ...
Dowson N N The Australian e-Health Research Centre, CSIRO, Royal Brisbane and Women's Hospital, Herston, QLD, - - 2014
Iliac artery tortuosity has been linked to the likelihood of complications following endovascular aneurysm repair (EVAR). Measures of tortuosity can be established from CT images; however, the reproducibility of existing scoring techniques has not been clearly established. It remains unclear whether it is tortuosity at focal locations or for the ...
Liang Wenqian W Department of Imaging Center, Nanfang Hospital, Southern Medical University, No. 1838 Guangzhou Ave. N., Guangzhou, Guangdong 510515, - - 2014
To evaluate the ascending aortic elasticity feature, 118 normotensive subjects who underwent coronary computed tomography angiography (CCTA) were enrolled. Two groups of parameters assessing elasticity were calculated based on the measurements of volume and area of ascending aorta. Multivariate analysis revealed that some factors including age, systolic BP, diastolic BP, ...
Niclauss Lars L Department of Cardiovascular Surgery, University Hospital of Lausanne, Lausanne, Switzerland - - 2014
Off-pump coronary bypass grafting may decrease the rate of stroke, due to minimal aortic manipulation. For venous grafts, clampless hemostasis when performing the proximal anastomosis can be achieved using the Heartstring device. We describe a technique using a single device to suture two veins to one aortotomy. This technique requires ...
Pati Purendra K PK Professor, Department of Cardiology, Christian Medical College and Hospital, Vellore, Tamil Nadu 632004, India. Electronic address: - - 2014
Isolation of left subclavian artery is a rare congenital anomaly. In this abnormality, the left subclavian artery arises from the homo-lateral pulmonary artery rather than from aorta. This condition is often diagnosed by angiography and treated by surgery. The authors present a case, which had vertebro-basilar insufficiency, subclavian steal phenomenon ...
Dong Jingliang J a School of Aerospace, Mechanical & Manufacturing Engineering, Platform Technologies Research Institute (PTRI), RMIT University , PO Box 71, Bundoora , VIC 3083 , - - 2014
The aim of this study is to elucidate the correlation between coronary artery branch angulation, local mechanical and haemodynamic forces at the vicinity of bifurcation. Using a coupled fluid-structure interaction (FSI) modelling approach, five idealized left coronary artery models with various angles ranging from 70° to 110° were developed to ...
Osterberg K K Department of Vascular Surgery and Institute of Medicine, Department of Molecular and Clinical Medicine, Sahlgrenska University Hospital and Academy, Blå Stråket 5, S-413 45 Gothenburg, Sweden. Electronic address: - - 2014
The use of an intraoperative shunt is an established technique used to reduce the ischemic time after acute arterial obstruction or in the prevention of hypoperfusion due to complex open vascular or endovascular operative procedures. To date, described methods of temporary extremity blood perfusion have required open surgical techniques. An ...
Koyama Sachi S Department of Cardiovascular Surgery, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo, - - 2014
Coronary artery bypass grafting for multivessel disease requires an appropriate graft design to avoid the competition of flow between the graft and the native vessel in order to achieve a sufficient coronary flow and durable graft patency. Three-dimensional computational models of the left coronary artery were created based on the ...
Shmilovich Haim H Department of Medicine and Cardiac Imaging, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Taper Building No. 1258, Los Angeles, CA 90048. Electronic address: - - 2014
Blooming artifact from calcified plaques often renders measurement of stenosis impossible on coronary computed tomographic angiography (CTA). We sought to evaluate the impact of modifying window level on reducing blooming artifact, and its impact on stenosis quantification. We analyzed 125 calcified segments from 53 patients who underwent CTA and invasive ...
Ohta Mitsunori M Department of General Thoracic Surgery, Osaka Prefectural Medical Center for Respiratory and Allergic Disease, Osaka, Japan. Electronic address: - - 2014
A ringed polytetrafluoroethylene graft was applied to reduce clamping time for a patent major vein. In case 1, after suturing the ringed graft to the right appendage, the other end was inserted in the distal direction of the left brachiocephalic vein and secured by ligation. In case 2, to repair ...
Don Creighton W CW Division of Cardiology, University of Washington Medical Center, Seattle, Washington, USA. - - 2014
The inability to reposition or retrieve balloon-expandable transcatheter aortic valves once they have been deployed requires implantation of the valve in the descending aorta or open surgical procedures to extract the valve. We describe the challenging transfemoral delivery of an Edwards Lifesciences Sapien valve wherein we had difficulty crossing the ...
Lederman Alex A Vascular Surgery, Hospital Universitário, Universidade de São Paulo (USP), São Paulo, Brazil Vascular Surgery, Hospital Israelita Albert Einstein, São Paulo, Brazil - - 2014
Abdominal aortic aneurysms are among the main causes of death. The high morbidity and mortality associated with aneurysm rupture and repair represents a challenge for surgeons and high risk for patients. Although experimental models are useful to understand, train, and develop new treatment and diagnostic methods for this pathology, animal ...
Nguyen A T V AT Department of Surgical Sciences, Dunedin School of Medicine, University of Otago, Dunedin, New - - 2014
Despite a decreasing incidence of abdominal aortic aneurysm (AAA), the cost-effectiveness of AAA ultrasound screening can be improved by reducing the screening costs and increasing the uptake rates. The BVI 9600 (BVI) is a promising tool for this purpose as it is inexpensive and can detect AAA without a trained ...
Lee Chang-Young CY Department of Neurosurgery, Keimyung University School of Medicine, 56 Dalseong-ro, Jung-gu, Daegu, 700-712, Republic of Korea, - - 2014
Crossing Y-stent technique is a valid option for coiling wide-necked bifurcation aneurysms. Two main designs of stents, the closed- (CCS) and open-cell (OCS), are used in combination for a crossing Y-construct. This in vitro study was conducted to assess the mechanical characteristics of each stent-combination and to suggest an optimal ...
Glotzbecker Michael M 1Department of Orthopaedic Surgery Boston Children's Hospital, Boston, MA 2Texas Scottish Rite Hospital for Children, Dallas, TX 3Primary Children's Medical Center, Salt Lake City, Utah 4Hospital Universitario La Paz, Madrid, Spain 5Children's Hospital Los Angeles, Los Angeles, CA 6Children's Hospital of Philadelphia, Philadelphia, PA 7Shriners Hospital for Children, Philadelphia, PA 8Children's Hospital Colorado, Denver, CO 9Seattle Children's Hospital, Seattle, - - 2014
Study Design. Cross sectional retrospective analysisObjective. To examine the degree of correlation between thoracic dimension outcome measures and pulmonary function in early-onset scoliosis (EOS)Summary of Background Data. Change in thoracic dimension (TD) measurements and spine length are commonly reported outcome measures following treatment for EOS. While ultimately improving or maintaining ...
Barros de Oliveira Sá Michel Pompeu MP Division of Cardiovascular Surgery of Pronto Socorro Cardiológico de Pernambuco - PROCAPE. Recife - Brazil; University of Pernambuco - UPE. Recife - Brazil; Nucleus of Postgraduate and Research in Health Sciences of Faculty of Medical Sciences and Biological Sciences Institute (FCM/ICB), Recife, Brazil. Electronic address: - - 2014
It is suggested that the skeletonization harvesting technique influences the patency rates of internal thoracic artery (ITA) after coronary artery bypass graft (CABG) surgery in comparison to conventional (pedicled) harvesting. We conducted a meta-analysis to determine whether there is any difference between skeletonized versus pedicled ITA in terms of patency ...
Xiang Jianping J 1Toshiba Stroke and Vascular Research Center, 2Department of Neurosurgery, 3Department of Mechanical and Aerospace Engineering, 4Department of Biomedical Engineering, 5Department of Radiology, University at Buffalo, State University of New York, Buffalo, - - 2014
A neurovascular flow diverter (FD), aiming at inducing embolic occlusion of cerebral aneurysms through hemodynamic changes, can produce variable mesh densities owing to its flexible mesh structure. To explore if the hemodynamic outcome would differ by increasing FD local compaction across the aneurysm orifice. We investigated deployment of a single ...
Park Yong-Hee YH Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, Seoul, - - 2014
There are multiple methods of determining the optimal position of central venous catheter (CVC) tips. The purpose of this study was to assess the feasibility of transthoracic echocardiography (TTE), and compare TTE and height-based method for correct positioning of CVCs in infants undergoing cardiac surgery. Ultrasonography-guided central venous catheterization was ...
Nezarati Roya M RM Department of Biomedical Engineering, Texas A&M University, College Station, Texas, - - 2014
Coronary artery bypass grafting is one of the most commonly performed major surgeries in the United States. Autologous vessels such as the saphenous vein are the current gold standard for treatment; however, synthetic vascular prostheses made of expanded poly(tetrafluoroethylene) or poly(ethylene terephthalate) are used when autologous vessels are unavailable. These ...
Schultz Carl J CJ Department of Cardiology, Erasmus MC, Rotterdam, The - - 2014
Aims: We describe a new semi-automated method that measures aortic regurgitation (AR) on contrast aortography with the objectives of reducing the inter-observer variability and standardising image acquisition. Methods and results: Aortograms from three participating centres were reviewed to generate the following quality criteria: entire left ventricle and aortic root in ...
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 ...
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