Real-time MR Guidance for inferior vena cava filter placement in an animal model.
It was the aim of this study to examine the feasibility of real-time magnetic resonance (MR) imaging for MR-guided placement of inferior vena cava (IVC) filters, which were placed in five pigs via a femoral approach. The introducer sheath and dilator were marked with Dysprosium rings. The procedures were performed under MR guidance with use of a 1.5-T ACS-NT imager. Radial filling of k-space in conjunction with the sliding window reconstruction technique achieved real-time MR imaging with a frame rate of 20 images/sec. Simultaneous real-time visualization of the vascular anatomy and interventional instruments was achieved under real-time conditions and allowed correct placement of IVC filters in all five cases as confirmed by radiographic angiography.
Bücker
A
A
Clinic for Diagnostic Radiology, University of Technology Aachen, Germany. buecker@rad.rwth-aachen.de
Neuerburg
J M
JM
Adam
G B
GB
Glowinski
A
A
Schaeffter
T
T
Rasche
V
V
van Vaals
J J
JJ
Günther
R W
RW
D000818:Animals; D003199:Computer Systems; D008279:Magnetic Resonance Imaging / Q000379:methods*; D023421:Models, Animal; D011859:Radiography; D013552:Swine; D016306:Vena Cava Filters; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging*