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Willemet Marie M Division of Imaging Sciences and Biomedical Engineering, St. Thomas' Hospital, King's College London, London, UK, - - 2014
We reviewed existing methods for analyzing, in the time domain, physical mechanisms underlying the patterns of blood pressure and flow waveforms in the arterial system. These are wave intensity analysis and separations into several types of waveforms: (i) forward- and backward-traveling, (ii) peripheral and conduit, or (iii) reservoir and excess. ...
Albinsson John J Department of Biomedical Engineering, Lund University, Lund, Sweden. Electronic address: - - 2014
The aim of this study was to evaluate tracking performance when an extra reference block is added to a basic block-matching method, where the two reference blocks originate from two consecutive ultrasound frames. The use of an extra reference block was evaluated for two putative benefits: (i) an increase in ...
Kuya Keita K Division of Radiology, Department of Pathophysiological Therapeutic Science, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago, 683-8504, Japan, - - 2014
Follow-up CT angiography (CTA) is routinely performed for post-procedure management after carotid artery stenting (CAS). However, the stent lumen tends to be underestimated because of stent artifacts on CTA reconstructed with the filtered back projection (FBP) technique. We assessed the utility of new iterative reconstruction techniques, such as adaptive statistical ...
Saydam Funda Akoz FA From the Departments of *Plastic, Reconstructive and Aesthetic Surgery and †Cardiovascular Surgery, Bagcilar Training and Research Hospital, Istanbul, - - 2014
The most dreaded major donor-site complication of free fibula flap is a foot ischemia, which is fortunately rare. Various authors have discussed the efficacy of the use of preoperative imaging methods including color Doppler, magnetic resonance angiography, and conventional angiography. A 25-year-old man presented with a 10-cm mandibular defect after ...
Gupta Vijay V Department of Neonatology, CMC, Vellore, Tamil Nadu, India. - - 2014
A modified technique for umbilical artery catheterization was assessed in babies in whom conventional method failed or if the cord was dry. Success rate attained with the modified technique was 90% (19/21). This modified technique could provide an easier and faster method for successful umbilical arterial catheterization.
Roccabianca S S Department of Biomedical Engineering, Yale University, New Haven, CT, - - 2014
The medial layer of large arteries contains aggregates of the glycosaminoglycan hyaluronan and the proteoglycan versican. It is increasingly thought that these aggregates play important mechanical and mechanobiological roles despite constituting only a small fraction of the normal arterial wall. In this paper, we offer a new hypothesis that normal ...
Kabinejadian Foad F Department of Biomedical Engineering, National University of Singapore, - - 2014
This study documents the superior hemodynamics of a novel coupled sequential anastomoses (SQA) graft design in comparison with the routine conventional end-to-side (ETS) anastomoses in coronary artery bypass grafts (CABG). The flow fields inside three polydimethylsiloxane (PDMS) models of coronary artery bypass grafts, including the coupled SQA graft design, a ...
Cauchi Matthew P MP Departments of Internal Medicine (M.P.C., P.M.R.), Emergency Medicine (R.P.Z.), and Cardiology (T.C.B.), Carilion Clinic, Roanoke Memorial Hospital, Roanoke, Virginia - - 2014
A radial artery pseudoaneurysm represents a rare, potentially catastrophic complication of arterial cannulation that has been reported after cardiac catheterization. Treatment options are limited to chemical, mechanical, and combined approaches to obliterate the radial artery pseudoaneurysm and tract. Manual compression protocols using the TR Band (Terumo Medical Corporation, Somerset, NJ) ...
Ene Florentina F Galway Medical Technologies Centre (GMedTech), Department of Mechanical and Industrial Engineering, Galway-Mayo Institute of Technology, Galway, - - 2014
The variation in computational assumptions for analysing abdominal aortic aneurysm haemodynamics can influence the desired output results and computational cost. Such assumptions for abdominal aortic aneurysm modelling include static/transient pressures, steady/transient flows and rigid/compliant walls. Six computational methods and these various assumptions were simulated and compared within a realistic abdominal ...
Zhou Chuan C Department of Radiology, University of Michigan, Ann Arbor, Michigan - - 2014
The authors are developing a computer-aided detection system to assist radiologists in analysis of coronary artery disease in coronary CT angiograms (cCTA). This study evaluated the accuracy of the authors' coronary artery segmentation and tracking method which are the essential steps to define the search space for the detection of ...
Ridding Gus G Maternal Fetal Medicine Unit, Royal North Shore Hospital, Sydney, N.S.W., - - 2014
Introduction: First-trimester uterine artery pulsatility index (PI) measurements form part of an algorithm used to assess the risk of developing pre-eclampsia. The objective of this study was to construct a population-specific reference range for both the lower and mean maternal uterine artery PI at 11-13(+6) weeks' gestation and to assess ...
Niepoth Wouter W WW 1 Department of Vascular Surgery, VU University Medical Center, Amsterdam, The - - 2014
Purpose : To investigate in an in vitro juxtarenal aneurysm flow model the feasibility and efficacy of using a sac-sealing endoprosthesis in a chimney graft configuration. Methods : In two experiments, a Nellix sac-sealing endoprosthesis was used as the main graft in a double-branched chimney graft configuration, using a self-expanding ...
Auricchio Ferdinando - - 2014
The degeneration of the vascular wall tissue induces a change of the arterial stiffness, i.e., the capability of the vessel to distend under the pulsatile haemodynamic load. In the literature the aortic stiffness is usually computed following a simple deterministic approach, in which only the maximum and the minimum values ...
Han Dongjin D Integrative Cardiovascular Imaging Research Center, Yonsei Cardiovascular Center, College of Medicine, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of - - 2014
We propose a fast seed detection for automatic tracking of coronary arteries in coronary computed tomographic angiography (CCTA). To detect vessel regions, Hessian-based filtering is combined with a new local geometric feature that is based on the similarity of the consecutive cross-sections perpendicular to the vessel direction. It is in ...
Niwatcharoenchaikul Weerawat W Graduate student, Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, - - 2014
Masticatory performance and maximum occlusal force may be different, depending on the occlusal schemes of the complete dentures used. The purpose of this study was to evaluate the effect of 2 complete denture occlusal schemes on masticatory performance and maximum occlusal force. Two complete denture occlusal schemes, bilateral balanced occlusion ...
Hedetoft Morten M Department of Neuroscience and Pharmacology, The Health Faculty, University of Copenhagen, Copenhagen, Denmark. Electronic address: - - 2014
Endothelial dysfunction is an important component in the development of cardiovascular diseases. Endothelial function may be evaluated by peripheral arterial tonometry (PAT) which measures the vasodilator function in the microvasculature of the fingertip during reactive hyperaemia. The reactive hyperemia index (RHI) is decreased in the presence of cardiovascular risk factors ...
An Chansik C Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 120-752, - - 2014
To assess the value of a CT-based abdominal aortic calcification (AAC) score as a surrogate marker for the presence of asymptomatic coronary artery disease (CAD). The AAC scores of 373 patients without cardiac symptoms who underwent both screening coronary CT angiography and abdominal CT within one year were calculated according ...
Chiu Kuan-Ming KM Department of Cardiovascular Surgery, Far Eastern Memorial Hospital, New Taipei City, - - 2014
Backgrounds Fractional flow reserve of myocardium (FFRmyo) is a functional study of significant coronary artery stenosis, defined as the ratio of the pressure distal to the stenosis (poststenosis) divided by the pressure of aortic root (prestenosis). Instead of cath laboratory, we could measure it in operating room for off-pump coronary artery ...
De Paulis Ruggero R Department of Cardiac Surgery, European Hospital, Rome, Italy - - 2014
To conduct a survey across European cardiac centres to evaluate the methods used for cerebral protection during aortic surgery involving the aortic arch. All European centres were contacted and surgeons were requested to fill out a short, comprehensive questionnaire on an internet-based platform. One-third of more than 400 contacted centres ...
Chueh Ju-Yu JY Department of Radiology, New England Center for Stroke Research, University of Massachusetts Medical School, Worcester, Massachusetts, - - 2014
Rates of durable aneurysm occlusion following coil embolization vary widely, and a better understanding of coil mass mechanics is desired. The goal of this study is to evaluate the impact of packing density and coil uniformity on aneurysm permeability. Aneurysm models were coiled using either Guglielmi detachable coils or Target ...
Assad-Kottner Christian C Central Arkansas Veterans Health System, Little Rock, - - 2014
Perforation of a left internal mammary artery (LIMA) graft during PCI is a rare event. We report a case of mid-LIMA perforation treated by a PTFE(polytetrafluoroethylene)-covered stent using a modification of the dual catheter ("ping pong") technique. We propose that use of this modification when possible will further improve safety ...
Takasugi Shohei S Division of Radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University, 36-1 Nishicho, Yonago, Tottori 683-8504 Japan. Electronic address: - - 2014
To evaluate the safety and efficacy of coil embolization with an indwelling catheter with side holes to control visceral artery bleeding while simultaneously preserving peripheral artery flow. A 6-F anticoagulant-coated catheter with two symmetrically arranged side holes was used with coil embolization to induce hemostasis in the superior mesenteric artery ...
Ramanathan Anantha K AK Department of Vascular Surgery, Gosford Hospital, 76Holden St, Gosford NSW 2250, Australia. Electronic address: - - 2014
During a bypass or a transposed fistula, there is a risk of twisting or torsion of the vein within the tunnel, which may not be easily apparent when incomplete. When valvulotomes are used some non-obstructing leaflets or flaps may remain. These mechanical problems may go undetected at the time and ...
Rodriguez Jennifer N JN Texas A&M University, Department of Biomedical Engineering, 3120 TAMU, College Station, TX, - - 2014
The rupture of an intracranial aneurysm, which can result in severe mental disabilities or death, affects approximately 30,000 people in the United States annually. The traditional surgical method of treating these arterial malformations involves a full craniotomy procedure, wherein a clip is placed around the aneurysm neck. In recent decades, ...
Drimouras Georgios G From the *Plastic Surgery Department, "A. Sygros" Hospital, National and Kapodestrian University of Athens, Athens Medical School, Athens; †Plastic and Reconstructive Surgery Department, "Metaxa" Oncology Hospital, Piraeus; and ‡Department of Forensic Medicine and Toxicology, National and Kapodestrian University of Athens, Athens Medical School, Athens, - - 2014
Perforator flaps whether in a free or pedicled form are essential in leg reconstruction, requiring meticulous dissection based on a detailed understanding of vascular topographic anatomy. Numerous investigators have addressed this issue. However, the directionality of their fascial exit has not been greatly discussed in the literature. Subfascial course of ...
Gómez-Montes Enery E Fetal Medicine Unit, Department of Obstetrics and Gynaecology, Hospital Universitario "12 de Octubre", Madrid, - - 2014
To determine which combination of cardiac parameters provides the best prenatal prediction of coarctation of aorta (CoAo). We selected all cases of simple cardiac asymmetry prenatally diagnosed in 2003-2013. Logistic regression was used to select the best predictors of CoAo. The study population included 115 fetuses. CoAo was confirmed in ...
de Weerd Marjolein M From the Julius Center for Health Sciences and Primary Care (M.d.W., J.P.G., M.L.B.) and Department of Vascular Surgery (G.J.d.B.), University Medical Center Utrecht, Utrecht, The Netherlands; Department of Clinical Sciences, Cardiovascular Epidemiology (B.H.) and Department of Clinical Sciences, Social Epidemiology (M.R.), Lund University, Malmö University Hospital, Malmö, Sweden; Department of Neurology, Johann Wolfgang Goethe University, Frankfurt am Main, Germany (M.W.L., M.S.); Department of Clinical Medicine, University of Tromsø, Tromsø, Norway (E.B.M.); Tufts University School of Medicine, Boston, MA (D.H.O'L.); and Department of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands - - 2014
Because of a low prevalence of severe carotid stenosis in the general population, screening for presence of asymptomatic carotid artery stenosis (ACAS) is not warranted. Possibly, for certain subgroups, screening is worthwhile. The present study aims to develop prediction rules for the presence of ACAS (>50% and >70%). Individual participant ...
Malvè M M Department of Mechanical Engineering, Energetics and Materials, Public University of Navarra, Campus Arrosadía, 31006, Pamplona, Spain, - - 2014
The purpose of the present study was to determine whether in vivo bifurcation geometric factors would permit prediction of the risk of atherosclerosis. It is worldwide accepted that low or oscillatory wall shear stress (WSS) is a robust hemodynamic factor in the development of atherosclerotic plaque and has a strong ...
Anderson Robert H RH 1Institute of Genetic Medicine,Newcastle University,Newcastle,United - - 2014
Background: Disagreement currently exists regarding the definition of aortic dextroposition. It is suggested that the term be used interchangeably with aortic overriding, along with suggestions that the aortic valve overrides in the normal heart. The dextroposed aorta, however, does not always override the crest of the muscular ventricular septum. It ...
Lupi Alessandro A Cardiologia ospedaliera, Ospedale Maggiore della Carità, Cso Mazzini 18, 28100 Novara, Italy. - - 2014
Longitudinal deformation has been described as a new complication affecting new-generation thin-strut coronary stents. Benchmark tests have suggested that the platinum-chromium (PtCr) Element coronary stent platform (Boston Scientific) might present increased susceptibility to this complication. Our study assessed the incidence of longitudinal stent deformation in a large single-center study population. ...
Inohara Taku T Department of Cardiology, Keio University School of Medicine, 35 Shinanomachi, Shinjukuku, Tokyo 160-8582, Japan. - - 2014
Retrograde double-balloon aortic valvuloplasty (DBAV) is a more effective method for decreasing the transvalvular gradient as compared to the conventional single-balloon technique for patients with severe aortic stenosis (AS). However, the potential risk of pressure-induced annulus injury remains a concern. In the present report, we describe a case of severe ...
Zanaty Mario M Department of Neurosurgery, Jefferson Hospital for Neuroscience, Thomas Jefferson University, 909 Walnut Street, Philadelphia, PA 19107, - - 2014
Endovascular management has become the treatment of choice for carotid-cavernous fistulas regardless of the fistula type. The endovascular method offers numerous options that render it capable of treating each fistula type by choosing an adequate technique. This advantage along with the advancement in the field has led to fewer complications ...
Brown Benjamin B Department of Neurosurgery, Mayo Clinic, Jacksonville, FL, - - 2014
In this article, the relevant anatomy of the cavernous and paraclinoid internal carotid artery is examined. Then the classic presentation of aneurysms in these locations and methods of diagnosis are reviewed. Finally, considerations for deciding to treat these aneurysms and the various endovascular techniques available are discussed.
Kiranantawat Kidakorn K Bangkok, Thailand; and London, United Kingdom From the Division of Plastic and Maxillofacial Surgery, Department of Surgery, Ramathibodi Hospital, Mahidol University; the Department of Computing, Faculty of Science, Silpakorn University; and the Department of Plastic Surgery, St Thomas' - - 2014
Postoperative monitoring of free flap tissue perfusion is vital. Devices available are expensive and complex to operate. Most surgeons rely on direct clinical observation. A monitoring system that is reliable, inexpensive, and easy to operate is needed. Using mobile phone technology, the authors developed and evaluated a new free flap ...
Xie Xinzhou - - 2014
Background: Coronary tortuosity (CT) would alter the local wall shear stress (WSS) and may become a risk factor for atherosclerosis. Here we performed a systematic computational study to relate CT morphological parameters to abnormal WSS which is a predisposing factor to the formation of atherosclerotic lesions. Method of approach: Several ...
Franano N N Metactive Medical, Inc., Olathe, KS, - - 2014
Using a canine model of a large, terminal, carotid artery, venous pouch aneurysm, a comparison was made between treatment with standard coils and treatment with the Ballstent Microcatheter(TM). For the pilot coiling study, a single aneurysm was surgically constructed on a newly created carotid artery terminal bifurcation in a hound. ...
Milburn J J Radiology and Neurosurgery, Ochsner Medical System, New Orleans, LA, - - 2014
A carotid cavernous fistula (CCF) is an abnormal arteriovenous connexion between the internal carotid artery (ICA) or the external carotid artery (ECA) and the cavernous sinus. Symptoms range from benign ocular disturbances and cranial nerve palsies to severe or rapid vision loss and intracranial haemorrhage. Primary treatment options include transvenous ...
Chueh J J Radiology, UMass Medical School, Worcester, MA, - - 2014
Durability of coiling procedures varies widely, and a better understanding of coil dynamics may help improve the treatment strategy. The goal of this study is to evaluate how packing density (PD) and coil uniformity impact aneurysm occlusion efficiency, which is conceptually associated with coil mass permeability. Experimental A1 aneurysm models ...
Imakuma E S ES Department of Surgery, University of São Paulo Medical School, São Paulo, Brazil. Electronic address: - - 2014
In living donor liver transplantation, the right-sided graft presents thin and short vessels, bringing forward a more difficult anastomosis. In these cases, an interpositional arterial autograft can be used to favor the performance of the arterial anastomosis, making the procedure easier and avoiding surgical complications. We compared the inferior mesenteric ...
Brand Moshe M Department of Mechanical Engineering and Mechatronics, Ariel University, Israel. Electronic address: - - 2014
Restenosis is strongly attributed to stresses caused by stent-artery interactions generated in the artery after balloon angioplasty. Numerical methods are often used to examine the stent-artery mechanical interactions. To overcome the extensive computational requirements demanded by these simulations, simplifications are needed. We introduce simplified models to calculate the mechanical interactions ...
Bapat Vinayak V Department of Cardiac Surgery & Cardiology, St Thomas' Hospital, - - 2014
Objectives To determine the level of the narrowest plane (neo-annulus) of a surgical heart valve (SHV), which could be used for sizing and securing a transcatheter heart valve (THV) during a valve-in-valve (VIV) procedure and define its relationship with the fluoroscopic markers of the SHV. Background In the native aortic ...
Zhang Yu-Qi YQ Department of Pediatric Cardiology, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, 200127, - - 2014
In children with coronary disease, clinical decision should be based on detailed measurements of the coronary arteries by two-dimensional echocardiography. We aimed to establish coronary artery reference indexed diameter and z scores regression equations in a large cohort of Chinese Han children. We measured the diameter of the proximal right ...
Palaniappan Rajkumar - - 2014
Pulmonary acoustic parameters extracted from recorded respiratory sounds provide valuable information for the detection of respiratory pathologies. The automated analysis of pulmonary acoustic signals can serve as a differential diagnosis tool for medical professionals, a learning tool for medical students, and a self-management tool for patients. In this context, we ...
Illies T T From the Departments of Diagnostic and Interventional Neuroradiology (T.I., M.B., J.F.) and Medical Informatics (D.S.), University Medical Center Hamburg-Eppendorf, Hamburg, Germany; and Departments of Neurosurgery (M.K., T.F.) and Radiology (N.T., Y.W.), Osaka University Graduate School of Medicine, Osaka, Japan. - - 2014
Electrocardiogram-gated 4D-CTA is a promising technique allowing new insight into aneurysm pathophysiology and possibly improving risk prediction of cerebral aneurysms. Due to the extremely small pulsational excursions (<0.1 mm in diameter), exact segmentation of the aneurysms is of critical importance. In vitro examinations have shown improvement of the accuracy of ...
Chen Yi-Xin - - 2014
The posterior and anterior circumflex humeral artery (PCHA and ACHA) are crucial for the blood supply of humeral head. We aimed to identify simple landmarks for guiding the quick access to PCHA and ACHA, which might help to protect the arteries during the surgical management of proximal humeral fractures. Twenty ...
Mosbahi Selim S Department of Cardiovascular Surgery, University Hospital Lausanne, Lausanne, - - 2014
The reconstruction of the right ventricular outflow tract (RVOT) with valved conduits remains a challenge. The reoperation rate at 5 years can be as high as 25% and depends on age, type of conduit, conduit diameter and principal heart malformation. The aim of this study is to provide a bench ...
Törő Klára K Semmelweis University Department of Forensic and Insurance Medicine, Hungary. Electronic address: - - 2014
A careful post-mortem investigation is needed to determine the cause of death of patients bearing coronary stents and to describe complications of stent implantation. The main purpose of this study was to combine post mortem methods of CT angiography and corrosion cast preparation for the visualization of coronary stenoses, coronary ...
Pahlavan Pedram P Faculty of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic) , Tehran , Iran - - 2014
Abstract One of the most common diseases of the vascular system is abdominal aortic aneurysm (AAA), for which the most definitive treatment is surgery. Minimally invasive aorta surgery is a novel method of surgery performed through small incisions and offers significant advantages including less pain, shorter hospital stay, faster patient ...
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 ...
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