%0 Journal Article
%T GantryMate: A Modular MR-Compatible Assistance System for MR-Guided Needle Interventions
%A Andreas Reichert
%A Axel Joachim Krafft
%A Michael Bock
%A Michael Vogele
%J Archive of "Tomography".
%D 2019
%R 10.18383/j.tom.2019.00007
%X Percutaneous minimally invasive interventions are difficult to perform in closed-bore high-field magnetic resonance systems owing to the limited space between magnet and patient. To enable magnetic resonance¨Cguided needle interventions, we combine a small, patient-mounted assistance system with a real-time instrument tracking sequence based on a phase-only cross-correlation algorithm for marker detection. The assistance system uses 2 movable plates to align an external passive marker with the anatomical target structure. The targeting accuracy is measured in phantom experiments, yielding a precision of 1.7 ¡À 1.0 mm for target depths up to 38 ¡À 13 mm. In in vivo experiments, the possibility to track and target static and moving structures is demonstrated
%K interventional magnetic resonance imaging
%K MR-guided interventional procedures
%K percutaneous procedures
%K MRI-compatible assistance system
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6588201/