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MR-guided cholecystostomy: Assessment of biplanar, real-time needle tracking in three pigs


Göhde, Susanne C; Pfammatter, Thomas; Steiner, Paul; Erhart, Peter; Romanowski, Benjamin J; Debatin, Jörg F (1997). MR-guided cholecystostomy: Assessment of biplanar, real-time needle tracking in three pigs. Cardiovascular and Interventional Radiology, 20(4):295-299.

Abstract

Purpose: To demonstrate the feasibility of magnetic resonance (MR)-guided cholecystostomy using active, real-time, biplanar MR tracking in animal experiments. Methods: Experiments were performed on three fully anesthetized pigs in an interventional MR system (GE open). The gallbladder was displayed in two orthogonal planes using a heavily T2-weighted fast spin-echo sequence. These "cholangio roadmaps” were displayed on LCD monitors positioned in front of the interventionalist. A special coaxial MR-tracking needle, equipped with a small receive-only coil at its tip, was inserted percutaneously into the gallbladder under continuous, biplanar MR guidance. The MR-tracking sequence allowed sampling of the coil (needle tip) position every 120 msec. The position of the coil was projected onto the two orthogonal "cholangio roadmap” images. Results: Successful insertion of the needle was confirmed by aspiration of bile from the gallbladder. The process of aspiration and subsequent instillation of Gd-DTPA into the gallbladder was documented with fast gradient-recalled echo imaging. Conclusion: Biplanar, active, real-time MR tracking in combination with "cholangio roadmaps” allows for cholecystostomies in an interventional MRI environment

Abstract

Purpose: To demonstrate the feasibility of magnetic resonance (MR)-guided cholecystostomy using active, real-time, biplanar MR tracking in animal experiments. Methods: Experiments were performed on three fully anesthetized pigs in an interventional MR system (GE open). The gallbladder was displayed in two orthogonal planes using a heavily T2-weighted fast spin-echo sequence. These "cholangio roadmaps” were displayed on LCD monitors positioned in front of the interventionalist. A special coaxial MR-tracking needle, equipped with a small receive-only coil at its tip, was inserted percutaneously into the gallbladder under continuous, biplanar MR guidance. The MR-tracking sequence allowed sampling of the coil (needle tip) position every 120 msec. The position of the coil was projected onto the two orthogonal "cholangio roadmap” images. Results: Successful insertion of the needle was confirmed by aspiration of bile from the gallbladder. The process of aspiration and subsequent instillation of Gd-DTPA into the gallbladder was documented with fast gradient-recalled echo imaging. Conclusion: Biplanar, active, real-time MR tracking in combination with "cholangio roadmaps” allows for cholecystostomies in an interventional MRI environment

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Item Type:Journal Article, refereed, original work
Communities & Collections:National licences > 142-005
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:1 July 1997
Deposited On:26 Sep 2018 13:34
Last Modified:24 Nov 2018 03:09
Publisher:Springer
ISSN:0174-1551
OA Status:Green
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/s002709900154
Related URLs:https://www.swissbib.ch/Search/Results?lookfor=nationallicencespringer101007s002709900154 (Library Catalogue)

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