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Summary: Percutaneous MR Imaging
guided Transvascular Access
of Mesenteric Venous System:
Study in Swine Model1
AravindArepally,MD
ParagV.Karmarkar,MS
CliffordWeiss,MD
ErginAtalar,PhD
Purpose: To determine if, with use of magnetic resonance (MR)
imaging guidance alone, transcaval puncture of the supe-
rior mesenteric vein (SMV) and/or portal vein is feasible
with a percutaneous femoral vein approach.
Materials and
Methods:
The Institutional Animal Care and Use Committee ap-
proved the animal studies. Ten inferior vena cava (IVC)
SMV punctures were performed in six pigs. An active MR
intravascular needle system was used for all transvascular
punctures, and all procedures were performed with a
1.5-T MR unit. The needle was introduced via a 12-F
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