Evaluation of ferromagnetism and magnetic resonance imaging artifacts of the Strecker tantalum vascular stent.
A woven tantalum vascular stent (Strecker stent) was tested for ferromagnetism at 4.7 T and underwent magnetic resonance imaging (MRI) in vitro and in vivo at 1.5 T to evaluate the production of magnetic susceptibility artifacts. No ferromagnetism was detected. Spin-echo, phase reconstruction, and gradient echo images revealed a low level of susceptibility artifacts both in vitro and in vivo. Our findings demonstrate the feasibility of using MRI to evaluate blood vessels noninvasively following tantalum stent placement.
Teitelbaum
G P
GP
Department of Radiology, Georgetown University Hospital, Washington, D.C.
Raney
M
M
Carvlin
M J
MJ
Matsumoto
A H
AH
Barth
K H
KH
D000818:Animals; D001807:Blood Vessel Prosthesis; D004285:Dogs; D008279:Magnetic Resonance Imaging; D008280:Magnetics; D015607:Stents; D013635:Tantalum
D013635:Tantalum