MR-guided endovascular interventions: susceptibility-based catheter and near-real-time imaging technique.
In a 47-year-old healthy male volunteer, susceptibility-based magnetic resonance (MR) imaging was performed in the basilic vein in the right upper arm at 1.5 T. A conventional 3-F nonbraided polyethylene catheter with a 0.3-mm lumen diameter was locally impregnated with dysprosium oxide, and six ringed areas of increased susceptibility were created. passive tracking of the catheter was performed with near-real-time conventional two-dimensional gradient-echo angiography. The entire prepared part of the catheter was depicted without steering problems or complications. Passive tracking is expected to provide a valuable adjunct to active tracking for guiding endovascular interventions.
Bakker
C J
CJ
Department of Radiology, University Hospital Utrecht, The Netherlands.
Hoogeveen
R M
RM
Hurtak
W F
WF
van Vaals
J J
JJ
Viergever
M A
MA
Mali
W P
WP
D001132:Arm / Q000098:blood supply; D002406:Catheterization, Peripheral / Q000379:methods*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged