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Coulombe Nicolas - - 2013
INTRODUCTION: A novel cryoballoon with improved refrigerant distribution promises better pulmonary vein (PV) isolation success rate without sacrificing the technology's safety profile. This study aimed to compare the Arctic Front® (AF) balloon to the new Arctic Front Advance™ (AFA). METHODS AND RESULTS: Twenty pulmonary PVs from 10 healthy dogs weighing ...
Hametner Bernhard - - 2013
OBJECTIVES: Recently, a novel method to estimate aortic pulse wave velocity (aPWV) noninvasively from an oscillometric single brachial cuff waveform reading has been introduced. We investigated whether this new approach provides acceptable estimates of aPWV compared with intra-aortic catheter measurements. METHODS: Estimated values of aPWV obtained from brachial cuff readings ...
Franquet A - - 2013
The stiffness of the arterial wall, which is modified by many cardiovascular diseases such as atherosclerosis, is known to be an indicator of vulnerability. This work focuses on the in vivo quantification of the stiffness of the common carotid artery (CCA) by applying the Magnitude Based Finite Element Model Updating ...
Kölbel T - - 2013
Aim: The aim of this paper was to present a mathematical model to calculate the required main aortic graft-diameter for parallel chimney-grafts. Methods: Geometric approximation model, developed to allow for a standardized calculation of the main aortic graft-diameter determined by the aortic diameter and the diameter of the chimney-graft. Results: ...
Chen Haoyu - - 2013
We propose a novel method to reconstruct the hypothetical geometry of the healthy vasculature prior to intracranial aneurysm (IA) formation: a Frenet frame is calculated along the skeletonization of the arterial geometry; upstream and downstream boundaries of the aneurysmal segment are expressed in terms of the local Frenet frame basis ...
Stavropoulou-Deli Alcestis - - 2013
BACKGROUND: Minimally invasive procedures, such as the TVT-Secur™, have been linked to injury to the corona mortis. Injury during the insertion of the TVT-Secur™ happens due to the vessel's position close to the place of the margin (25-30 mm from the symphysis pubis). AIMS: Systematic description of the aberrant vessel anatomy ...
Park Jaechan - - 2013
OBJECTIVE: Certain clinical situations, such as a surgical embolectomy for an acute embolic occlusion of the internal carotid artery (ICA) or the surgical repair of a blood blister-like aneurysm (BBA), can require the superior wall of the ICA to be repaired using a microsuture technique. This can be complicated and ...
Kalashyan Harapet - - 2013
We describe a 68-year-old man with acute stroke in whom the newly developed single sweep method for three-dimensional (3D) carotid ultrasound provided a rapid and comprehensive assessment of atherosclerotic plaque burden in the internal carotid artery. The two-dimensional duplex carotid scan diagnosed 50-69% stenosis, and with the three-dimensional method, the ...
de Bruin Jorg L - - 2013
Purpose : To determine gutter size and stent-graft geometry in an in vitro juxtarenal aneurysm model using various chimney graft (CG) configurations. Methods : Two silicone juxtarenal aortic aneurysm models were constructed combining different diameters of the aorta and renal artery. In a single-branched CG configuration, 2 sizes (23 and ...
Bukac Martina - - 2013
Recent in vivo studies, utilizing ultrasound contour and speckle tracking methods, have identified significant longitudinal displacements of the intima-media complex, and viscoelastic arterial wall properties over a cardiac cycle. Existing computational models that use thin structure approximations of arterial walls have so far been limited to models that capture only ...
Lim Kyung Seob - - 2013
The aim of this study was to compare the stent designed by Chonnam National University Hospital (designated as CNUH) with commercial cobalt-chromium coronary stent in a porcine coronary overstretch restenosis model. CNUH stent was subjected to mechanical performance tests. Pigs were randomized into two groups in which the coronary arteries ...
Silva Júnior Severino Lourenço da - - 2013
OBJECTIVE: To develop an experimental model of stable saccular aneurysm in carotid of pigs using the internal jugular vein. METHODS: In 12 healthy pigs, weighing between 25 and 50kg, five males and seven females, we made a right common carotid artery aneurysm. After elliptical arteriotomy, we carried out a terminolateral ...
Czerski A - - 2013
Animal models of abdominal aortic aneurysms (AAA) enable preclinical studies on new therapeutic approaches and help to understand pathophysiology of the disease. The aim of this study was to demonstrate the effectiveness of selected methods of experimental induction of abdominal aortic aneurysm in swine and to adapt the EMG examination ...
Gupta Neeraj - - 2013
Blunt thoracic trauma manifests in various ways, depending on the structures injured and type of injury. Commonly manifested as parenchymal contusion, at times, pseudacavitation may also been seen on the chest X ray. They are to be differentiated from other causes of pulmonary cavitations which are often done based on ...
Chiu Peixuan P Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, - - 2013
Background: Endovascular repair of the aortic arch is often unsatisfactory due to poor stent-vessel conformity and inadequate landing zones. Objective: To study the anatomical characteristics of the aortic arch and provide basic information for the development of arch-specific endovascular devices. Materials and methods: Three-dimensional models were reconstructed in Mimics (image ...
Kim Moo Hyun - - 2013
OBJECTIVES: We report our evaluation of a novel retrograde wiring technique known as the Rendezvous method. BACKGROUND: Different strategies of retrograde approaches can be used to improve the success rate of recanalization of coronary chronic total occlusion (CTO). We previously introduced the Rendezvous technique as an alternative final step for ...
Kro Grete A B - - 2013
OBJECTIVE: To determine the association between 5-min Apgar score and umbilical cord artery carbon dioxide tension (pCO2 ). DESIGN: Observational study. SETTING: European hospital labor wards. POPULATION: Data from 36 432 newborns ≥36 gestational weeks were obtained from three sources: two trials of monitoring with fetal electrocardiogram (the Swedish randomized controlled ...
Bel Alain - - 2013
BACKGROUND: In selected type B acute aortic dissection with aortic growth and patent false lumen, an intervention may be required to prevent aortic rupture. Apart from stent grafting of the thoracic aorta, aimed at occluding the primary intimal tear, some have advocated closure of reentry tears by stent grafting of ...
Rivera Ivan Romero - - 2013
AIMS: There is no definitive and reliable echocardiographic method for estimating the pulmonary vascular resistance (PVR) to differentiate persistent vascular disease from dynamic pulmonary hypertension. The aim of this study was to analyze the relationship between the pulmonary venous blood flow velocity-time integral (VTIpv) and PVR. METHODS AND RESULTS: Eighteen ...
Satow Tetsu - - 2013
BACKGROUND:: In treating cavernous sinus dural arteriovenous fistulas (CSdAVFs), transvenous embolization of the whole affected sinus is usually performed, which may result in the disturbance of normal venous drainage, or permanent cranial nerve palsy. Objective: To describe superselective shunt occlusion (SSSO) of CSdAVFs. METHODS:: Between July 2005 and August 2011, ...
Fialova Jana - - 2013
Backround: Intermittent claudication is a classic symptom of peripheral arterial disease. It is mainly treated conservatively but if this fails, a form of revascularization is indicated. The revascularization in chronic occlusion of femoropopliteal region is currently performed by two basic methods: the standard method of surgical bypass and the newer ...
Park Jun-Bean - - 2013
Aim: The cardio-ankle vascular index (CAVI) is an index of arterial stiffness. We investigated the association of CAVI with the severity of coronary artery calcification (CAC) and coronary stenosis by coronary computed tomography angiography (CTA) in an asymptomatic population.Methods: A total of 549 asymptomatic Korean individuals who underwent CAVI and ...
Helle Michael - - 2013
In three example patients suffering from internal carotid artery occlusion, intracranial steno-occlusive disease, and symptomatic arteriovenous malformation (AVM), a new method named superselective pseudo-continuous arterial spin labeling (pCASL) was used in addition to clinical routine measurements. The capabilities of this method are demonstrated to gain important information in diagnosis, risk ...
Polak Joseph F JF Ultrasound Reading Center, Department of Radiology, Tufts Medical Center, Boston, Massachusetts, USA. - - 2013
Carotid and coronary atherosclerosis are associated with each other in imaging and autopsy studies. The aim of this study was to evaluate whether carotid artery plaque seen on carotid ultrasound can predict incident coronary artery calcification (CAC). Agatston calcium score measurements were repeated in 5,445 participants of the Multi-Ethnic Study ...
Mei Jin - - 2013
PURPOSE: The posterior forearm is an excellent donor site for the vascular pedicled cutaneous flaps; yet, there is surprisingly little detailed anatomical information based on clinical decision making. This study was undertaken to evaluate the anatomical basis of the dorsal forearm perforator flaps and to provide anatomical landmarks to facilitate ...
McElvany Matthew - - 2013
OBJECTIVES:: To examine the frequency of intra-articular placement of distal femoral traction pins and their proximity to the superficial femoral artery. METHODS:: Wires were placed in the distal femurs of 28 cadaveric knees at the adductor tubercle (ADT), the superior pole of the patella (SPP), and 2cm proximal to this ...
Marmagkiolis Konstantinos - - 2013
Percutaneous mitral balloon valvuloplasty (PMBV) was initially described by Inoue in 1984 as a novel percutaneous technique for the management of mitral stenosis. Intracardiac echocardiography was initially used in the 1980s but was not universally accepted due to its high-frequency transducers and problems with steerability and manipulation. In the 1990s ...
McCarthy Elizabeth A - - 2013
A Web-based survey of Royal Australian and New Zealand College of Obstetricians and Gynaecologists (RANZCOG) fellows and trainees who perform or act on umbilical artery Doppler showed heterogeneous reporting practices. Systolic: diastolic ratio is frequently used. Pulsatility index is favoured internationally and by many RANZCOG subspecialists. Unpublished charts are used ...
Hameeteman K - - 2013
The distensibility of a blood vessel is a marker of atherosclerotic disease. In this paper we investigate the feasibility of measuring carotid artery distensibility on 4D CTA, both manually and using a new automatic method. On 4D CTA datasets manual (n=38) and automatic (n=76) measurements of the carotid distensibility were ...
Milburn James - - 2013
BACKGROUND/OBJECTIVE: This was a retrospective single operator experience of aneurysm coiling at the Ochsner Clinic, comparing the Penumbra coil 400 with the other most commonly used coil types, Orbit and Galaxy. METHODS: 40 aneurysms treated exclusively with Orbit or Galaxy coils and 18 aneurysms treated only with Penumbra coils from ...
Orozco Vicente - - 2013
Percutaneous transluminal angioplasty and stenting is being employed with increasing frequency for stenosis involving the brachiocephalic circulation. However, the efficacy of these procedures is limited by intimal hyperplasia and subsequent re-stenosis. Long-term results for treating lesions of the subclavian or innominate artery have shown significant re-stenotic rate. Accordingly, carotid-subclavian bypass ...
Bilgel Murat - - 2013
Labeling of cerebral vasculature is important for characterization of anatomical variation, quantification of brain morphology with respect to specific vessels, and inter-subject comparisons of vessel properties and abnormalities. We propose an automated method to label the anterior portion of cerebral arteries using a statistical inference method on the Bayesian network ...
Cho Young Dae - - 2013
INTRODUCTION: Protection techniques using stents or balloons are occasionally limited in coil embolization of wide-necked posterior communicating artery (PcomA) aneurysms in which the PcomA originated from the aneurysm neck at an acute angle. Here, we present two cases undergoing retrograde stenting through the posterior cerebral artery in coil embolization of ...
Ross Kharah M - - 2013
Objective: There is mounting evidence that high levels of self-esteem are associated with better health outcomes, particularly in older adults dealing with serious medical illnesses. Much less is known about how this linkage unfolds developmentally, particularly during times like adolescence, when youngsters' self-views are typically in flux. Here we explore ...
Cognet Thomas - - 2013
Congenital bicuspid aortic valve (BAV) is the most common congenital heart defect and may be responsible for aortic stenosis early in life. However, its pathogenesis remains unclear. A relationship between the severity of aortic stenosis and valvular surfaces has not been reported in the paediatric population. To assess the feasibility ...
Gao Feng - - 2013
One treatment method for aortic aneurysm is the invasive insertion of a stent into the aneurysm. Another method is wrapping the aneurysm using newly developed expanded polytetrafluoroethylene (PTFE) material. A virtual stented aneurysm model and a wrapped aneurysm model were created to study the flow and wall dynamics by means ...
Lee Chang-Joon - - 2013
Computational fluid dynamics simulations can provide important hemodynamic insights for investigating the effectiveness of carotid artery stenting, but its accuracy is dependent on the boundary conditions such as the outflow pressure, which is difficult to obtain by measurements. Many computational fluid dynamics simulations assume that the outflow pressure is constant ...
Kim Dong Bin - - 2013
This study seeks to improve the mechanical performance of stents by conducting reliability performance testing and finite element method (FEM)-based simulations for coronary stents. Three commercially available stent designs and our own new design were tested to measure the factors affecting performance, specifically foreshortening, recoil, radial force, and flexibility. The ...
Bingyuan Bao - - 2013
Objectives: The study aimed to assess the feasibility of a novel device and technique for antegrade percutaneous balloon aortic valvuloplasty (BAV) in a swine model. Background: BAV is currently being applied more frequently compared to the past with the advent of transcatheter aortic valve replacement. Although the antegrade BAV approach ...
Li Xuehua - - 2013
OBJECTIVE: The objective of this study was to assess the efficacy and clinical value of 64-slice computed tomography angiography (CTA) with image fusion for demonstrating the perigastric venous anatomy. METHODS: Twenty-six patients with gastric cancer underwent abdominal CTA examinations. Computed tomography angiography of stomach and perigastric veins and arteries were ...
Kang Ho-Jun - - 2013
Keyhole craniotomy is a modification of pterional craniotomy that allows for use of a minimally invasive approach toward cerebral aneurysms. Currently, mini-pterional (MPKC) and supraorbital keyhole craniotomies (SOKC) are commonly used. In this study, we measured and compared the geometric configurations of surgical exposure provided by MPKC and SOKC. Nine ...
Ruano Rodrigo - - 2013
Objectives To estimate the accuracy of the quantitative lung index and contralateral lung area for prediction of the neonatal outcome in isolated congenital diaphragmatic hernia in comparison to other available prediction models. Methods Between January 2004 and December 2010, 108 fetuses with isolated (82 left-sided and 26 right-sided) congenital diaphragmatic ...
Cheng Ye - - 2013
The shape and position of the cavernous segment of the internal carotid artery (CSICA) are complicated, which makes the surgeries around it difficult. There were many reports about the primary event of internal carotid artery injury resulting in hemorrhage during transsphenoidal resection of pituitary tumors. The anatomical relationship between CSICA ...
Chiu Kuan-Ming - - 2013
For cardioplegia delivery and removing air from the aorta in minimally invasive mitral valve operations, we would like to propose a cost-effective pigtail method. The 8F pigtail punctures the aorta, delivers cardioplegia, and stays in place for removing air from the aorta. We then slide its tip out of the ...
Clevert D A - - 2013
PURPOSE: To evaluate the feasibility of the classification of endoleaks following endovascular aortic aneurysm repair using the time-to-peak of the contrast agent in CEUS examinations. MATERIAL AND METHODS: In this retrospective study, a cohort of 171 patients with a total of 489 CEUS follow-up examinations after EVAR were included. In ...
Sadasivan Chander - - 2013
Endovascular coiling of cerebral aneurysms remains limited by coil compaction and associated recanalization. Recent coil designs which effect higher packing densities may be far from optimal because hemodynamic forces causing compaction are not well understood since detailed data regarding the location and distribution of coil masses are unavailable. We present ...
Yan Tristan D - - 2013
Considered a standard part of aortic arch surgery, hypothermia can sufficiently reduce cerebral metabolic demand to permit reasonable periods of circulatory arrest. Yet despite its ubiquitous application and critical importance, temperature classification in hypothermic circulatory arrest is still without clear definition. The following Consensus from experts in high-volume aortic institutions ...
García Alberto - - 2013
The study of the mechanical properties of swine carotids has clinical relevance because it is important for the appropriate design of intravascular devices in the animal trial phases. The inelastic properties of porcine carotid tissue were investigated. Experimental uniaxial cyclic tests were performed along the longitudinal and circumferential directions of ...
Foin Nicolas N International Centre for Circulatory Health, Imperial College London, London, United Kingdom. - - 2013
Left main stenting is increasingly performed and often involves deployment of a single stent across vessels with marked disparity in diameters. Knowing stent expansion capacity is critical to ensure adequate strut apposition after post-dilatation of the stent has been performed. Coronary stents are usually manufactured in only two or three ...
Pereira V M VM Interventional Neuroradiology Unit, Neuroradiology Service, University Hospital of Geneva, Geneva, Switzerland. - - 2013
Ruptured cerebral arteriovenous malformations (AVMs) usually require treatment to avoid re-bleeding. Depending on the angioarchitecture and center strategy, the treatment can be surgical, endovascular, radiosurgical or combined methods. The classic endovascular approach is transarterial, but sometimes it is not always applicable. The transvenous approach has been described as an alternative ...
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