Steve Kecskemeti1, Ethan Brodsky1,
Walter Block1, Orhan Unal1
1Medical Physics, University of
Wisconsin, Madison, WI, United States
Current
methods of catheter tracking [1] interrupt the imaging sequence at some
predefined update rate to acquire several projections to determine the position
of the catheter. We have a taken a
different approach and have developed a robust method to extract the tracking
data directly from the imaging data using an interleaved 3D radial (VIPR)
k-space acquisition. The method presented in this abstract uses the
information from all the projections within a VIPR interleaf to determine the
catheter location. This results in a
more robust prediction of the catheter location and reduces the perception of
jitter in the catheter position.