Results 11 to 20 of about 58,144 (239)

Efficient isogeometric thin shell formulations for soft biological materials [PDF]

Biomech Model Mechanobiol (2017) 16:1569, 2016
This paper presents three different constitutive approaches to model thin rotation-free shells based on the Kirchhoff-Love hypothesis. One approach is based on numerical integration through the shell thickness while the other two approaches do not need any numerical integration and so they are computationally more efficient. The formulation is designed
Roohbakhshan, Farshad, Sauer, Roger A.
arxiv   +3 more sources

Position based balloon angioplasty [PDF]

Proceedings of the 15th ACM SIGGRAPH Conference on Virtual-Reality Continuum and Its Applications in Industry - Volume 1, 2016
Balloon angioplasty is an endovascular procedure to widen narrowed or obstructed blood vessels, typically to treat arterial atherosclerosis. Simulating angioplasty procedure in the complex vascular structures is a challenge task since the balloon and vessels are both flexible bodies. In this paper, we proposed a position based balloon physical model to
Gong Ruobin, Pengbin Tang, Wen Tang, Youdong Ding, Dongjin Huang, Yin Wang   +5 more
openaire   +5 more sources

Immediate and late outcome of excimer laser and balloon coronary angioplasty: A quantitative angiographic comparison based on matched lesions [PDF]

, 1995
Objectives.This study sought to compare acute lumen changes and late lumen narrowing during and after excimer laser-assisted balloon angioplasty, measured by quantitative coronary angiography, with the immediate and long-term outcome of balloon ...
Boersma, H. (Eric), Foley, D.P. (David), Melkert, R. (Rein), Serruys, P.W.J.C. (Patrick), Strikwerda, S. (Sipke), Swijndregt, E.M. (Eline Montauban) van, Umans, V.A.W.M. (Victor)   +6 more
core   +8 more sources

Lumen Shape Reconstruction using a Soft Robotic Balloon Catheter and Electrical Impedance Tomography [PDF]

, 2022
Incorrectly sized balloon catheters can lead to increased post-surgical complications, yet even with preoperative imaging, correct selection remains a challenge. With limited feedback during surgery, it is difficult to verify correct deployment. We propose the use of integrated impedance measurements and Electrical Impedance Tomography (EIT) imaging to
arxiv   +1 more source

A multiscale model of vascular function in chronic thromboembolic pulmonary hypertension [PDF]

, 2021
Chronic thromboembolic pulmonary hypertension (CTEPH) is caused by recurrent or unresolved pulmonary thromboemboli, leading to perfusion defects and increased arterial wave reflections. CTEPH treatment aims to reduce pulmonary arterial pressure and reestablish adequate lung perfusion, yet patients with distal lesions are inoperable by standard surgical
arxiv   +1 more source

Exercise right heart catheterization before and after balloon pulmonary angioplasty in inoperable patients with chronic thromboembolic pulmonary hypertension

Pulmonary Circulation, 2020
Background * These authors contributed equally as last authors. Balloon pulmonary angioplasty is an evolving, interventional treatment option for inoperable patients with chronic thromboembolic pulmonary hypertension (CTEPH).
Christoph B. Wiedenroth, MD, Andreas J. Rieth, MD, Steffen Kriechbaum, MD, H.-Ardeschir Ghofrani, MD, Andreas Breithecker, MD, Moritz Haas, MD, Fritz Roller, MD, Manuel J. Richter, MD, Mareike Lankeit, Lisa Mielzarek, Andreas Rolf, MD, Christian W. Hamm, MD, Eckhard Mayer, MD, Stefan Guth, MD, Christoph Liebetrau, MD   +14 more
doaj   +1 more source

Comparison of Primary Patency Rate between Drug- Coated Balloon and Plain Balloon Angioplasty in Hemodialysis Access

Siriraj Medical Journal, 2022
Objective: Hemodialysis adequacy in end-stage renal disease patients plays a crucial role in their quality of life. Repeated stenosis at the anastomotic site of arteriovenous fistula and synthetic arteriovenous graft are a major cause of access failure ...
Trakarn Chaivanit, Pechngam Chaivanit, Pakpume Bumrungrachapukdee, Pongtrip Unprasert, Krittanont Wattanavaekin, Thoetphum Benyakorn   +5 more
doaj   +1 more source

A thermodynamic framework for unified continuum models for the healing of damaged soft biological tissue [PDF]

, 2021
When they are damaged or injured, soft biological tissues are able to self-repair and heal. Mechanics is critical during the healing process, as the damaged extracellular matrix (ECM) tends to be replaced with a new undamaged ECM supporting homeostatic stresses. Computational modeling has been commonly used to simulate the healing process.
arxiv   +1 more source

Immediate and Intermediate Outcomes of Balloon Angioplasty in Neonatal Type Coarctation of Aorta in Sulaimani Cardiac Center

Advanced Medical Journal, 2023
Background and objectives: Coarctation of aorta is the fourth most prevalent heart disease in infants requiring catheterization and surgery during the first year of life.
Shaymaa Jalal Mohammed, Aso Faeq Salih
doaj   +1 more source

Rupture of the arterial wall causes deflection in pressure time course during ex vivo balloon angioplasty [PDF]

, 1997
A relation between restenosis and arterial lesions resulting from balloon angioplasty has been suggested in literature. Nevertheless, it is unclear to what extent angioplasty-induced arterial wall lesions contribute to the occurrence of restenosis.
Boom, Herman B.K., Havenith, Miek G., Poortermans, Cees J., Steenhuijsen, Jacco L.G., Vaartjes, Simon R.   +4 more
core   +3 more sources