Abstract #3709
Real-time automatic tracking with a dedicated 3D Hall-effect integrated circuit for MRI-guided interventions
Loc Cuvillon 1 , Elodie Breton 1 , Jean-Baptiste Schell 1 , Jean-Baptiste Kammerer 1 , Daniel Gounot 1 , Luc Hbrard 1 , and Michel de Mathelin 1
1
ICube, Strasbourg University - CNRS,
Strasbourg, France
A 3D Hall sensor integrated circuit and its localization
algorithm were designed for gradient-based localization
of interventional instruments during MR-guided
procedure. Dedicated bipolar gradients and
synchronization signal were implemented in a multi-slice
real-time interactive spoiled gradient echo sequence.
The localization algorithm is based on a linear model of
the gradient coil fields identified during a calibration
procedure. Based on the calculated pose, two orthogonal
slices are aligned in real-time on the main axis of the
device. A position accuracy of 2 mm is achieved and
free-hand motion is monitored. This integrated circuit
3D probe could be integrated inside surgical
instruments.
This abstract and the presentation materials are available to members only;
a login is required.
Join Here