Magnetic resonance flow velocity and temperature mapping of a shape memory polymer foam device.
Biomed Eng Online
; 8: 42, 2009 Dec 31.
Article
em En
| MEDLINE
| ID: mdl-20043833
ABSTRACT
BACKGROUND:
Interventional medical devices based on thermally responsive shape memory polymer (SMP) are under development to treat stroke victims. The goals of these catheter-delivered devices include re-establishing blood flow in occluded arteries and preventing aneurysm rupture. Because these devices alter the hemodynamics and dissipate thermal energy during the therapeutic procedure, a first step in the device development process is to investigate fluid velocity and temperature changes following device deployment.METHODS:
A laser-heated SMP foam device was deployed in a simplified in vitro vascular model. Magnetic resonance imaging (MRI) techniques were used to assess the fluid dynamics and thermal changes associated with device deployment.RESULTS:
Spatial maps of the steady-state fluid velocity and temperature change inside and outside the laser-heated SMP foam device were acquired.CONCLUSIONS:
Though non-physiological conditions were used in this initial study, the utility of MRI in the development of a thermally-activated SMP foam device has been demonstrated.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polímeros
/
Procedimentos Cirúrgicos Cardiovasculares
/
Temperatura
/
Imageamento por Ressonância Magnética
/
Cianatos
/
Etanolaminas
/
Etilenodiaminas
Idioma:
En
Revista:
Biomed Eng Online
Assunto da revista:
ENGENHARIA BIOMEDICA
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Estados Unidos