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Abstract #5553

Investigation of Phase-only Cross Correlation (POCC) for Passive Marker Tracking with a limited Number of Projections

Andreas Reichert1, Axel Joachim Krafft1, and Michael Bock1

1Dept. of Radiology, Medical Physics, Medical Center – University of Freiburg, Freiburg, Germany

In MR-guided interventions passive markers serve as needle guides for percutaneous biopsies and can be followed automatically to visualize the planned needle trajectory. This is achieved by tracking techniques which acquire two cross-sectional Cartesian tracking images of a cylindrical marker to determine the position information. We show that the implementation of radially undersampled tracking images might be used to reduce the duration of percutaneous needle procedures by about 80%.

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