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Abstract #0646

SMART tracking: SiMultaneous Anatomical imaging and Real-Time needle tracking

Frank Zijlstra1 and Peter R Seevinck1

1Image Sciences Institute, UMC Utrecht, Utrecht, Netherlands

We propose a passive needle tracking method for MR-guided interventions. We combined undersampled 2D radial multi-echo acquisitions, the white marker phenomenon, and simulations and template matching of artifacts around the needle tip to achieve real-time (10 Hz) tracking of the needle tip, while simultaneously being able to reconstruct anatomical images using a sliding window reconstruction. The method is demonstrated to smoothly track the insertion of a needle in porcine tissue while also showing deformations in the anatomical image caused by the needle insertion. These results bridge a gap between active and passive tracking of needles.

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