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Abstract #3747

Highly Efficient 3D Tracking & Visualization of Loopless Active MRI Devices using Slice-Direction-Dephased, Undersampled Projection Imaging

Ashvin Kurian George1, J. Andrew Derbyshire1, Michael S. Hansen1, Christina E. Saikus1, Ozgur Kocaturk1, Robert J. Lederman1, Anthony Z. Faranesh1

1National Institutes of Health, Bethesda, MD, United States

We introduce a method to track the 3D curve of a moving active interventional device with a loopless-coil design. The goal is to collect small amounts of tracking data in between the data collection required for the reconstruction of multiple slices in the real-time display. The tracking data consists of two highly undersampled projection images of the device. We are able to achieve a greater data reduction than all previous methods by using slice-direction-dephased projection images of the device and optimal in-plane rotation.