Search Results
Results 451 - 500 of 2013
< 5 6 7 8 9 10 11 12 13 14 15 >
Kahraman Hasan H Department of Chest Disease, Kahramanmaras Sutcu İimam University, Faculty of Medicine, Kahramanmaras, - - 2013
Background Occupational exposure to cotton dust causes several diseases affecting the lungs, but only limited information is available on effects of long-term exposure. In this study, we aimed to evaluate longitudinal changes in selected parameters of pulmonary function in textile workers. Material and Methods This prospective cohort study began with ...
Kalmar Peter I PI Department of Radiology, Medical University of Graz, Auenbruggerplatz 9a, 8036 Graz, - - 2013
Secondary dissection in the descending aorta after endovascular therapy may demand subsequent interventional procedures. This can set a particularly significant challenge for the endovascular specialist. When implanting an aortic prosthesis, a sufficient contact between the covered segment and the healthy vessel wall is advisable. However, our case shows that, in ...
Nagra Karan - - 2013
Though computed tomographic angiography has very high sensitivity and specificity to diagnose acute aortic dissection, false-negative studies can occur and secondary tests may be required to make the diagnosis. We report the case of a 57-year-old Caucasian man with a typical presentation for acute type A aortic dissection in whom ...
Link Daniel P DP Department of Vascular Surgery, University of California Davis School of Medicine, 4860 Y Street, STE 3400, Sacramento, CA 95817, - - 2013
Objective. To report an incidence of reflux in the deep venous system reversed by ablation of a popliteal fossa vein (PFV). Method. A 40-year-old man with pain and swelling in the medial upper calf was found to have an incompetent PFV. Results. Reflux in the femoral and popliteal veins was ...
Moulton Kyle M KM Department of Medical Imaging, University of Saskatchewan, 103 Hospital Drive, Saskatoon, SK, Canada S7N - - 2013
Dual left anterior descending artery (LAD) is a rare coronary anomaly that is important to recognize at coronary imaging as it may influence reperfusion strategies. Four types of dual LAD are described by the traditional literature. We present a novel case of dual LAD with coronary computed tomographic angiographic correlation ...
Tewari Shivendra G SG Biotechnology and Bioengineering Center, Medical College of Wisconsin Milwaukee, WI, - - 2013
A computer model was used to analyze data on cardiac and vascular mechanics from C57BL6/J mice exposed to 0 (n = 4), 14 (n = 6), 21 (n = 8) and 28 (n = 7) days of chronic hypoxia and treatment with the VEGF receptor inhibitor SUGEN (HySu) to induce ...
Zhou Xiaohu X Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong - - 2013
This paper describes a pneumatic valve controlled microdevice for performing mixing and reaction. This microdevice combined the degassed polydimethylsiloxane (PDMS) pumping method with a syringe-actuated valve system to control the dispensing and mixing of nanoliter solutions. The syringe was used to manually generate vacuum and to open the valves. Upon ...
Brown Aliza A Department of Radiology, 4301 West Markham Street, University of Arkansas for Medical Sciences, Little Rock, AR 72205-7199, - - 2013
Neurological outcomes and behavioral assessments are widely used in animal models of stroke, but assessments in rabbit models are not fully validated. The wryneck model of neurological assessment scores (NAS) was compared to percent infarct volume (%IV) values (infarct volume is a proven clinical indicator of stroke severity) and arterial ...
Sugihara Fumie F Department of Radiology, Nippon Medical School, IVR Center, Tokyo, - - 2013
We describe the case of a 67-year-old woman with an anomalous systemic arterial supply to the basal segment of the lung, which was managed successfully by transcatheter arterial embolization (TAE) with microcoils. Her chest computed tomography (CT) scan showed diffuse ground-glass opacity in the left lower lobe, no bronchial abnormalities, ...
Picchetto Livio L Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), University of Rome "La Sapienza", Sant'Andrea Hospital, Via di Grottarossa 1035-1039, 00189 Rome, - - 2013
Background. Endarterectomy (CEA) or stenting (CAS) of a stenotic carotid artery is currently undertaken to reduce stroke risk. In addition removal of the arterial narrowing has been hypothesized to improve cerebral hemodynamics and provide benefits in cognitive functions, by supposedly resolving a "hypoperfusion" condition. Methods. In this study we sought ...
Benseghir Thomas T GE-Healthcare, 78530 Buc, - - 2013
Treatment coronary arteries endovascular involves catheter navigation through patient vasculature. The projective angiography guidance is limited in the case of chronic total occlusion where occluded vessel can not be seen. Integrating standard preoperative CT angiography information with live fluoroscopic images addresses this limitation but requires alignment of both modalities. This ...
Zheng Yefeng Y Imaging and Computer Vision, Siemens Corporate Technology, Princeton, NJ, USA. - - 2013
Various methods have been proposed to extract coronary artery centerlines from computed tomography angiography (CTA) data. Almost all previous approaches are data-driven, which try to trace a centerline from an automatically detected or manually specified coronary ostium. No or little high level prior information is used; therefore, the centerline tracing ...
Lorza Andrés M Arias AM Department of Radiology, Erasmus MC, The - - 2013
We present a new approach for automated segmentation of the carotid lumen bifurcation from 3D free-hand ultrasound using a 3D surface graph cut method. The method requires only the manual selection of single seed points in the internal, external, and common carotid arteries. Subsequently, the centerline between these points is ...
Bryniarski Leszek L 1 Department of Cardiology, Interventional Electrocardiology and Arterial Hypertension, Hospital University, Collegium Medicum Jagiellonian University, Krakow, - - 2013
Recanalization of chronic total occlusion (CTO) located in the ostium may require the operator's ability to use the retrograde approach. We present a case of opening a chronically occluded right coronary artery (RCA) by the retrograde approach after an unsuccessful attempt of recanalization by classic antegrade technique.
Maciąg Aleksander A 2 Department of Coronary Artery Disease, Institute of Cardiology, Warsaw, - - 2013
Transvenous lead extraction can be a method to regain venous access. We present the case of a man, aged 67, with indications to upgrade an ICD to a resynchronization therapy device. Since innominate vein occlusion was diagnosed and extraction of an abandoned ventricular pacing lead did not provide lumen regain, ...
Noll Dariusz D Institute of Cardiology, Warsaw, - - 2013
Computed tomography coronary angiography (CTCA) is a diagnostic method used for exclusion of coronary artery disease. However, lower accuracy of CTCA in assessment of calcified lesions is a significant factor impeding applicability of CTCA for assessment of coronary atherosclerosis. To provide insight into lumen and calcium characteristics assessed with CTCA, ...
Kusa Jacek J Regional Specialist Hospital, Research and Development Center in Wroclaw, Medical University of Silesia in Katowice, - - 2013
There is quite high risk of vascular complications connected with arterial puncture - mainly in the group of the smallest patients weighing less than 10 kg. To evaluate a new method of percutaneous closure of persistent arterial duct (PDA) in small children. Six patients were enrolled in this method of ...
André Florian - - 2012
INTRODUCTION: Invasive coronary angiography is the reference method for identification of in-stent restenosis (ISR) bearing the disadvantages of high costs and invasiveness. New approaches like dual-source CT (DSCT) and 256-multi-slice CT (256-MSCT) may potentially be the future methods of choice to reliably exclude ISR in patients with low or intermediate ...
Johansen Louise K - - 2012
ABSTRACT A new inoculation technique has been developed and applied in a porcine model of juvenile hematogenous osteomyelitis. Following the success of the model, we describe the inoculation technique in detail to enable its replication in future studies. The technique was based on an anatomical feature of the femoral artery ...
Perkov Dražen - - 2012
Renal arteriovenous fistula (AVF) presents a rare but important condition that can be acquired, congenital, or idiopathic. Embolization techniques have recently been considered the first-line therapy in the treatment of these lesions, but they carry a possible high risk of distal migration of embolic agents into the venous and pulmonary ...
Aydin Ufuk - - 2013
Intraoperative detection of deeply embedded coronary arteries is difficult. This study describes an effective method to identify embedded coronary arteries by intraoperative cine angiography. Two embedded left anterior descending coronary arteries were successfully identified by intraoperative cine angiography. We believe that the intraoperative cineangiography is helpful for surgeons in this ...
Yoshitani Kenji - - 2012
BACKGROUND:: Near-infrared spectroscopy has been used clinically to continuously and noninvasively monitor cerebral oxygen saturation (ScO2). However, there is no gold standard for measuring absolute values of ScO2. Although time-resolved spectroscopy (TRS) is one of the most reliable algorithms that reliably calculate absolute values of ScO2, there are very few ...
Johnsen S H - - 2012
OBJECTIVES: This research aims to study how carotid atherosclerosis is related to growth of infrarenal aortic diameter and aneurysmal formation. DESIGN: Population-based follow-up study. MATERIALS AND METHODS: At baseline, ultrasound examination of the carotid artery and the abdominal aorta was performed in 4241 persons from a general population with no ...
Athanasiou Thanos - - 2012
BACKGROUND: The optimal conduit choice in revascularisation of the right coronary system (RCA) remains uncertain. This study aims to identify if arterial grafts are superior to saphenous vein (SV) grafts and whether graft failure rates vary between proximal and distal RCA anastomoses. METHODS: 29 studies identified by systematic review were ...
Belharet K - - 2012
This work presents a preoperative microrobotic surgical simulation and planning application. The main contribution is to support computer-aided minimally invasive surgery (MIS) procedure using untethered microrobots that have to navigate within the arterial networks. We first propose a fast interactive application (with endovascular tissues) able to simulate the blood flow ...
Bovenschulte H H Institute and Policlinic of Radiological Diagnostics, University of Cologne, 50924 Cologne, Germany. - - 2013
Our rationale was to evaluate whether a 64-slice CT scanner allows accurate measurement of computed tomographic (CT) changes in coronary artery flow profiles and whether CT flow measurements are suitable for classifying the significance and hemodynamic relevance of a stenosis and thereby supplement as a functional parameter for morphological stenosis ...
Komatsu Ikki - - 2012
Advances in coronary intervention have increased the opportunity to intervene on complex lesions, resulting in an increase in PCI-related complication, including coronary artery perforation. However, treatment options for coronary perforation are limited, with delivery of devices to complex lesions being problematic. Balloon hemostasis is the usual bailout method, despite the ...
Javadzadegan Ashkan - - 2012
Flow recirculation zones and shear strain are associated with distinct pathogenic biological pathways relevant to thrombosis and atherogenesis. The interaction between stenosis severity and lesion eccentricity in determining the length of flow recirculation zones and peak shear strain in human coronary arteries in vivo is unclear. Computational fluid dynamics (CFD) ...
Lauric Alexandra - - 2012
BACKGROUND:: The variable definition of Size Ratio (SR) for sidewall (SW) vs. bifurcation (BIF) aneurysms raises confusion for lesions harboring small branches such as carotid ophthalmic or posterior communicating locations. These aneurysms are considered SW by many clinicians, while SR methodology classifies them as BIF. OBJECTIVE:: To evaluate the effect ...
Sakaguchi Taichi - - 2012
We herein describe a simple method for the fine length adjustment of expanded polytetrafluoroethylene (e-PTFE) using the loop technique for mitral valve repair. The loops are temporarily anchored to the mitral leaflet with a second e-PTFE suture by tying only once (one-knot technique). This anchor suture can be easily removed ...
Lee Young-Hoon - - 2012
Background: We examined whether low-grade albuminuria, below the conventional cut-off value for microalbuminuria, was associated with atherosclerotic vascular diseases in 8897 community-dwelling Koreans aged ≥50 years. Methods: The urinary albumin-to-creatinine ratio (UACR) was calculated using random spot urine. Common carotid artery (CCA) intimamedia thickness (IMT) and CCA internal diameter were ...
Mukai Shinichi - - 2012
BACKGROUND: The incidence of delayed bleeding after endoscopic submucosal dissection (ESD) for gastric neoplasms is reported to be approximately 5 %. We examined whether postprocedural combined treatment using the coagulation plus artery-selective clipping (2C) method is a useful measure for preventing delayed bleeding after ESD. METHODS: A total of 234 gastric ...
Fukuhara Shinichi S Divisions of Vascular and Thoracic Surgery, Department of Surgery, Beth Israel Medical Center, New York, NY, USA. - - 2013
Dysphagia lusoria occurs secondary to an aberrant right subclavian artery coursing posterior to the oesophagus. Open ligation and transposition to the right carotid artery via a right supraclavicular approach has been described as a minimally invasive method. However, approaching the origin of the aberrant right subclavian artery through this incision ...
Robinson Claire C Imaging Department, Leicester Royal Infirmary, University Hospitals of Leicester, Leicester LE27LX, - - 2013
Targeted post-mortem computed tomography angiography (PMCTA) is one of several methods described that can be used to investigate the coronary arteries after death. Previously, this particular method has involved the manual injection of contrast media. However, manual systems do not mimic physiological conditions (arterial pressure) and may not provide optimal ...
Cárdenes Rubén - - 2012
Geometrical aneurysm quantification is considered an important topic for the study of aneurysm formation, growth, risk of rupture and also in treatment planning. Usually, quantification involves aneurysm isolation, consisting in the operation of detecting the boundary between the aneurysm dome and its feeding arteries. This operation is sometimes performed manually, ...
Psychogios Marios-Nikos - - 2012
OBJECTIVES: Intra-arterial digital subtraction angiography (IA-DSA), an invasive procedure, is the current reference examination after percutaneous transluminal angioplasty and stenting for the detection of in-stent restenosis (ISR). In this phantom study, we evaluated flat-panel angiographic computed tomography after intravenous contrast agent application (IV-ACT) and multidetector computed tomographic angiography (MDCTA) as ...
Soulez Gilles - - 2012
PURPOSE: To compare the creation of carotid atherosclerotic plaque after stenosis creation with absorbable or permanent suture in a diabetic dyslipidemic swine model. MATERIALS AND METHODS: A high-cholesterol diet was fed to 15 Sinclair pigs. Diabetes was induced by intraarterial injection of streptozotocin. Stenosis creation in carotid arteries was performed ...
Sahin Sevtap Hekimoglu - - 2012
To evaluate the accuracy and precision of a new, noninvasive infrared thermometer applied to the temporal artery. Prospective randomized study. Trakya University Hospital. 60 ASA physical status 1 and 2 children undergoing surgery. During anesthesia, temperature measurements were recorded with three different techniques: temporal artery, nasopharynx, and axillary temperature. Temperatures ...
Stone William M - - 2012
Inflammatory abdominal aortic aneurysms (IAAA) are being treated more frequently by endovascular aneurysm repair (EVAR). Some authors caution against treating IAAA by EVAR because retroperitoneal inflammation may not subside post-operatively. A recent experience of 69 IAAA treated by open and endovascular methods is presented with results supporting the use of ...
Ferrari Enrico - - 2012
Intraoperative cardiac imaging plays a key role during transcatheter aortic valve replacement. In recent years, new techniques and new tools for improved image quality and virtual navigation have been proposed, in order to simplify and standardize stent valve positioning and implantation. But routine performance of the new techniques may require ...
Karl Tom R - - 2012
Repair of common arterial trunk using an extracardiac right ventricular to pulmonary arterial conduit is the preferred method in most cardiac surgical centres. Reoperation is a fact of life for survivors of common arterial trunk and related cardiac lesions who have undergone such repairs. Long-term survivors may require periodic conduit ...
Zhou Chunkui - - 2012
In this issue of Neuroendocrinology Letters Kováčik et al. reported that coronary artery disease is not associated with stroke recurrence. Although the data were analyzed by statistical methods and the analysis was extremely encouraging, the conclusion should be interpreted with caution.
Martins Pisco João - - 2012
Prostatic arterial embolization (PAE) is an experimental alternative treatment for benign prostatic hyperplasia, with promising preliminary results. In comparison with surgery, its main advantages are the minimally invasive nature, outpatient setting, rapid recovery, and low morbidity. To avoid complications and to achieve technical success it is important to know the ...
Shek Tina L T - - 2012
The technique of crossing the limbs of bifurcated modular stent grafts for endovascular aneurysm repair (EVAR) is often employed in the face of splayed aortic bifurcations to facilitate cannulation and prevent device kinking. However, little has been reported about the implications of cross-limb EVAR, especially in comparison to conventional EVAR. ...
Zhao Shijia - - 2012
The stent-artery interactions have been increasingly studied using the finite element method for better understanding of the biomechanical environment changes on the artery and its implications. However, the deployment of balloon-expandable stents was generally simplified without considering the balloon-stent interactions, the initial crimping process of the stent, its overexpansion routinely ...
Niesten Joris M - - 2012
OBJECTIVES: To evaluate the accuracy and reproducibility of CT-perfusion (CTP) by finding the optimal artery for the arterial input function (AIF) and re-evaluating the necessity of the venous output function (VOF). METHODS: Forty-four acute ischaemic stroke patients who underwent non-enhanced CT, CTP and CT-angiography using 256-slice multidetector computed tomography (MDCT) ...
Mackey Jason - - 2012
BACKGROUND AND PURPOSE: Previous studies have suggested that family members with intracranial aneurysms (IAs) often harbor IAs in similar anatomic locations. IA location is important because of its association with rupture. We tested the hypothesis that anatomic susceptibility to IA location exists using a family-based IA study. METHODS: We identified ...
Arkudas Andreas - - 2012
Introduction: In this study the angiogenetic effect of sintered 45S5 Bioglass® was quantitatively assessed for the first time in the arteriovenous loop model. Materials and Methods: An arteriovenous loop was created by interposition of a venous graft from the contralateral side between the femoral artery and vein in the medial ...
Krizanac Danica - - 2012
AIM OF THE STUDY: Therapeutic hypothermia after cardiac arrest improves neurologic outcome. The temperature measured in the pulmonary artery is considered to best reflect core temperature, yet is limited by invasiveness. Recently a femoro-arterial thermodilution catheter (PiCCO- Pulse Contour Cardiac Output) has been introduced in clinical practice as a safe ...
Wang Yan-Li - - 2013
The associations between the aortic dimensions (of the aortic sinus, aortic annulus and aortic arch) and physiological variables have not been established in the Chinese population. The present study examined the associations among physiological variables to determine the aortic root and arch dimensions echocardiographically. The diameters of the aortic sinus, ...
< 5 6 7 8 9 10 11 12 13 14 15 >