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A navigation system for minimally invasive CT-guided interventions.

Markus Nagel·Gerd Schmidt·Ralf Petzold·Willi A Kalender
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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.

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AlgorithmsArtifactsArtificial IntelligenceHumansImaging, Three-DimensionalMinimally Invasive Surgical ProceduresMotionNeedlesPhantoms, ImagingPuncturesRadiographic Image EnhancementRadiographic Image Interpretation, Computer-AssistedReproducibility of ResultsSensitivity and SpecificitySurgery, Computer-AssistedTomography, X-Ray ComputedEvaluation StudyJournal ArticleResearch Support, Non-U.S. Gov't

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Markus Nagel, Gerd Schmidt, Ralf Petzold, Willi A Kalender. 2005. A navigation system for minimally invasive CT-guided interventions.. https://doi.org/10.1007/11566489_5

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