In-Vivo Targeting of Liver Lesions with a Navigation System Based on Fiducial Needles

We assessed the targeting precision of a previously reported needle-based soft tissue navigation system in-vivo. Eight 2 ml agar nodules were implanted into the livers of two swine as tumor models. One medical expert with experience in punctures and one non-expert used the navigation system to target each nodule twice. The targeting error, which includes the system error and the user error, was defined as the distance between the applicator tip and the center of gravity of the lesions in computed tomography (CT) control scans and was

• Type: Conference
• Year: 2008
• Where: BILDMED
• Authors: Lena Maier-Hein, A. Tekbas, Alexander Seitel, Frank Pianka, Sascha A. Müller, S. Schawo, Boris A. Radeleff, Ralf Tetzlaff, A. Franz, Anne-Mareike Rau, Ivo Wolf, Hans-Ulrich Kauczor, Bruno M. Schmied, Hans-Peter Meinzer
• Keywords: Algorithms, BILDMED 2008, Ml Agar Nodules, Soft Tissue Navigation, User Error