Wireless Accelerometer for MRI-Guided Interventional Procedures
Martyn N.J. Paley,
Araminta Ledger,
Martin O. Leach,
Craig Cummings,
Raymond Hughes,
Ali Akgun
Affiliations
Martyn N.J. Paley
Unit of Academic Radiology, University of Sheffield, Sheffield S10 2JF, UK
Araminta Ledger
CR-UK and EPSRC Cancer Imaging Centre, Institute of Cancer Research, Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Belmont, Sutton, Surrey SM2 5NG, UK
Martin O. Leach
CR-UK and EPSRC Cancer Imaging Centre, Institute of Cancer Research, Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Belmont, Sutton, Surrey SM2 5NG, UK
Craig Cummings
CR-UK and EPSRC Cancer Imaging Centre, Institute of Cancer Research, Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Belmont, Sutton, Surrey SM2 5NG, UK
Raymond Hughes
Specialty Magnetics Limited, Unit-1, 10 Stonefield Way, South Ruislip, Middlesex HA4 0JS, UK
Ali Akgun
Specialty Magnetics Limited, Unit-1, 10 Stonefield Way, South Ruislip, Middlesex HA4 0JS, UK
MRI-guidance is increasingly used for minimally-invasive procedures, such as biopsy, and requires real-time active tracking of surgical instruments. Although optical and MR-based fiducial tracking devices have been used, these systems rely on complex contact with the operator or line-of-sight access for effective operation. A more straight-forward and clinically robust method is required to allow interactive real-time slice positioning of MR scan planes during interventional procedures. This study evaluated the use of a wristwatch-mounted, low cost wireless interface device for real-time MRI guidance. The device was designed to interact with software for planning rather than instrument guidance. The wireless device was integrated with two novel, open interventional magnet systems operating at 0.17T and 0.5T and utilized a novel customized graphic user interface (GUI) to assess interventional capability.
