نتایج جستجو برای: intravascular catheter

تعداد نتایج: 57589  

Journal: :Physics in medicine and biology 2000
C L de Korte A F van der Steen E I Cépedes G Pasterkamp S G Carlier F Mastik A H Schoneveld P W Serruys N Bom

Intravascular ultrasound elastography is a method for measuring the local elastic properties using intravascular ultrasound (IVUS). The elastic properties of the different tissues within the atherosclerotic plaque are measured through the strain. Knowledge of these elastic properties is useful for guiding interventional procedures (balloon dilatation, ablation) and detection of the vulnerable p...

Journal: :IEEE robotics and automation letters 2023

Transcarotid Artery Revascularization (TCAR) is typically performed by manual catheter insertion and implies radiation exposure for both the patient surgeon. Taking advantage from robotics artificial intelligence (AI), this letter presents a robotic ultrasound (RUS) platform improving procedure. To purpose, (US) imaging considered in pre-operative stage procedure planning intra-operative to tra...

2013
S. Al-Benna C. O'Boyle J. Holley

Insertion of an intravascular catheter is one of the most common invasive procedures in hospitals worldwide. These intravascular lines are crucial in resuscitation, allow vital medication to be administered, and can be used to monitor the patients' real-time vital parameters. There is, however, growing recognition of potential risks to life and limb associated with their use. Medical literature...

Journal: :Circulation 1999
G G Zimmermann-Paul H H Quick P Vogt G K von Schulthess D Kling J F Debatin

BACKGROUND The individual makeup of atherosclerotic plaque has been identified as a dominant prognostic factor. With the use of an intravascular magnetic resonance (MR) catheter coil, we evaluated the effectiveness of high-resolution MR in the study of the development of atherosclerotic lesions in heritable hyperlipidemic rabbits. METHODS AND RESULTS Sixteen hyperlipidemic rabbits were invest...

Journal: :Anadolu kardiyoloji dergisi : AKD = the Anatolian journal of cardiology 2012
Fahrettin Öz Ahmet Yaşar Çizgici Ozan Çakır Hüseyin Oflaz

Fracture of the IVUS catheter is very rare and, but when occurs they may lead to life-threating complications, such as embolization, thrombus formation and perforation. A 58-year-old man who had history of smoking, dyslipidemia and type II diabetes mellitus presented with an inferior ST-elevation myocardial infarction and underwent emergent coronary angiography. His coronary angiography showed ...

2009
C. O. Schirra P. G. Batchelor R. Razavi S. Kozerke T. Schaeffter

Introduction The use of real-time MRI for guidance of intravascular interventions is a rapidly developing research field given its superior soft-tissue contrast and the lack of hazardous radiation [1]. In order to visualize the entire length of such a catheter, a three dimensional (3D) image of a complete volume covering the catheter is necessary. Conventional MR imaging methods result in prohi...

Journal: :The Yale Journal of Biology and Medicine 1971
B. B. Perlman L. R. Freedman

Proceeding from the clinical observation that intravascular polyethylene catheters easily become infected in man, the introduction of a polyethylene catheter into the right side of the heart has recently been shown to induce the formation of sterile endocarditis in rabbits.`' It was further noted that inoculation of as few as 102 staphylococci through the catheter would regularly result in stap...

2004
R. Torrance

At one time, direct intravascular contrast angiography was the standard method for confirmatory diagnosis of venous or pulmonary arterial thromboembolism. Although sensitive and specific, conventional catheter-based contrast imaging is invasive and associated with a risk of phlebitis and thrombosis. These procedures require specialized training and experience in catheter manipulation, as well a...

Journal: :Circulation 1994
J L Evans K H Ng M J Vonesh B L Kramer S N Meyers T A Mills B J Kane W N Aldrich Y T Jang P G Yock

BACKGROUND Intravascular ultrasound (IVUS) of arteries is limited by the inability of current instruments to visualize beyond the catheter tip. We have developed a prototype 4-mm-diameter forward-viewing IVUS catheter (Cardiovascular Imaging Systems, Sunnyvale, Calif) that has the ability to provide B-mode cross-sectional ultrasound data for a distance of up to 2 cm distal to the catheter tip. ...

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