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[Ultrasound-guided interventions using magnetic field navigation. First experiences with Ultra-Guide 2000 under
M Birth1, P Iblher, P Hildebrand
1Klinik für Chirurgie des Universitätsklinikums Lübeck. Matthias.Birth@medinf.mu-luebeck.de
Aim:
Ultrasound-guided interventions are presently performed as free-hand-type procedures or using biopsy transducers. In this article we report on our experience with a new navigation-system for sonographically guided interventional procedures under OR-conditions.
Methods:
The US-Guide 2000 trade mark is an electromagnetic guidance system that assists physicians in ultrasound-guided interventional procedures. This system accommodates both in-plane and out-of-plane needle placement. We evaluated this system for the first time under OR-conditions. Overall, for 39 interventional procedures (23 thermoablations of malignant liver lesions, 16 diagnostic punctures) were performed.
Results:
All targets were reached successfully without any complications. No interactions with other OR-devices were seen.
Conclusion:
The US-Guide 2000 trade mark as a virtual needle-guiding system allows a safe and accurate sonographically assisted intervention. The major advantage is the possibility of out-of-plane needle placement and the combination of flexibility of free-hand-type procedures with the accuracy of a biopsy transducer. This increases the safety of punctures especially when lesions are difficult to reach and/or are situated next to vulnerable structures. It also reduces the interventional trauma.