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tantalum/infarction
Nuoroda įrašoma į mainų sritį
Puslapis 1 nuo 17 rezultatus
Production of [13N]ammonia from [13C]methanol on a 7.5 MeV cyclotron using 13C(p, n)13N reaction: Detection of myocardial infarction in a mouse model.
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[13N]Ammonia is commonly produced using 16O(p, α)13N reaction but one of the limiting factor of this reaction is the relatively small nuclear cross-section at proton energies of <10 MeV. An alternative production method using 13C(p, n)13N
Angiographic follow-up and clinical experience with the flexible Tantalum Cordis stent.
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The Cordis stent is a flexible, highly radioopaque intracoronary stent engineered from a single Tantalum filament folded into a sinusoidal helical coil. It is premounted on a semicompliant balloon expandable stent delivery system. From September 1995-March 1996, 147 Cordis stents were deployed in
Multicenter evaluation of the Strecker tantalum stent for acute coronary occlusion after angioplasty.
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The Strecker stent is a balloon-expandable, flexible endoprosthesis constructed of knitted tantalum wire and has been implanted successfully in peripheral arteries. This study presents the first multicenter experience with implantation of this radiopaque device in the coronary arteries in 64
Development and validation of a novel technique for murine first-pass radionuclide angiography with a fast multiwire camera and tantalum 178.
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BACKGROUND
The use of genetically altered mice as a model system to study cardiovascular disease has created a need for accurate and quantitative assessment of murine ventricular function. To address this very challenging problem, we have developed a technique of murine first-pass radionuclide
Failure of porous tantalum cervical interbody fusion devices: two-year results from a prospective, randomized, multicenter clinical study.
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OBJECTIVE
The objective of this study was to assess the safety and efficacy of 2 novel cervical interbody fusion devices in the treatment of single-level degenerative cervical disk disease. Both devices were fabricated from a porous tantalum material. The high overall porosity of the devices was
Intracoronary Stents
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September 16, 1977, in Zurich Germany, Andreas Grunzig performed the first balloon angioplasty in a coronary artery on Andreas Bachman. Grunzig used the first known balloon, a DG 20-30. This method of treating a coronary artery was effective 10 to 20 years after Bachman performed this first
Silicon Carbide Coating Ñ A Semiconducting Hybrid Design of Coronary Stents Ñ A Feasibility Study.
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OBJECTIVE: To determine the rates of subacute and acute thrombotic stent occlusion in patients with normal and high risk for stent thrombosis and to assess the 6 month follow-up with respect to in-stent restenosis, using a new principle of semiconductor coating (active passivating as metallic hybrid
Coronary stents.
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As early as 1912, endovascular support devices were tried in canine aortas to maintain luminal patency in various conditions. Stents were introduced into clinical practice in 1986 to treat abrupt closure and to prevent restenosis after angioplasty. In 1994, two major randomised trials have confirmed
Failure of nitroglycerin introduced after prolonged myocardial ischemia to improve collateral blood flow and function in tranquilized dogs.
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This study investigated whether nitroglycerin can improve ischemic zone blood flow and function when its infusion is delayed following left anterior descending (LAD) occlusion. Nitroglycerin (200 micrograms/min, 11 dogs) or saline (six dogs) was infused for 2 hours starting 2 hours after occlusion.
Effects of acute, transient coronary occlusion on global and regional right ventricular function in humans.
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OBJECTIVE
The aim of this study was to investigate the changes in right ventricular function during acute coronary occlusion produced by inflating a coronary angioplasty balloon catheter.
BACKGROUND
Alterations in right ventricular function are well known to occur in patients with acute myocardial
Comparative clinical and angiographic analysis of the initial efficacy and long-term follow-up of Wiktor stent implantation with conventional balloon angioplasty.
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This study was retrospectively designed to examine if the Wiktor stent, a balloon-expandable tantalum coil stent, provides a more favorable procedural and long-term clinical and angiographic outcome than does conventional coronary balloon angioplasty (POBA). From April 1995 to April 1996, we
Clinical experience with the Wiktor stent in native coronary arteries and coronary bypass grafts.
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OBJECTIVE
To evaluate the results of implantation of Wiktor tantalum wire coronary stents in stenosed or occluded coronary vessels or in saphenous vein bypass grafts.
METHODS
A retrospective analysis of clinical and angiographic data from patients treated with tantalum wire stents implanted by one
Long term follow-up of transcatheter embolization with autologous clot, oxycel and gelfoam in domestic swine.
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Transcatheter embolization of the distal gastrosplenic artery as well as the distal right renal artery or one of its bifurcational branches was performed in 9 domestic swine. The animals were embolized with fresh autologous clot, oxycel or gelfoam in groups of 3. The embolic material was opacified
First-in-Human Evaluation of a Novel Polymer-Free Drug-Filled Stent: Angiographic, IVUS, OCT, and Clinical Outcomes From the RevElution Study.
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This study sought to assess the safety and effectiveness of the drug-filled stent (DFS) (Medtronic, Santa Rosa, California) in the treatment of patients with coronary artery disease.
Polymer-free drug-eluting stents have the potential to improve clinical outcomes and facilitate shorter durations of
Silicon carbide-coated stents: clinical experience in coronary lesions with increased thrombotic risk.
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OBJECTIVE
To report the results of a prospective, nonrandomized, multicenter study of a semiconductor-coated stent in coronary lesions at high risk for stent thrombosis.
METHODS
A balloon-expandable tantalum stent was coated with silicon carbide to enhance thromboresistance (Tensum). Patients were
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