title: A navigation system for minimally invasive CT-guided interventions.
abstract: The purpose of our project was to develop a novel navigation system for interventional radiology. Fields of application are minimally invasive percutaneous interventions performed under local anaesthesia. In order to reduce unintentional patient movements we used a patient vacuum immobilization device. Together with the vacuum fixation and a newly developed reference frame we achieved a fully automatic patient-to-image registration independent from the tracking system. The combination of the software and a novel designed needle holder allows for an adjustment of the needle within a few seconds. The complete system is adapted to the requirements of the radiologist and to the clinical work-flow. For evaluation of the navigation system we performed a phantom study with a perspex phantom and achieved an average needle positioning accuracy of less than 0.7 mm.
authors: Institute of Medical Physics, University of Erlangen-Nürnberg, Germany. markus.nagel@imp.uni-erlangen.de
authors: Markus
authors: M
authors: Nagel
authors: Gerd
authors: G
authors: Schmidt
authors: Ralf
authors: R
authors: Petzold
authors: Willi A
authors: WA
authors: Kalender