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Abstract #1834

Passive Magnetic Resonance Catheter Tracking with Spatial Wavelet and Temporal Constraints

M. Ethan MacDonald1, 2, R. Marc Lebel, 23, Richard Frayne1, 2

1Biomedical Engineering, University of Calgary, Calgary, AB, Canada; 2Radiology and Clinical Neurosciences, University of Calgary, Seaman Family MR Research Centre, Foothills Medical Centre, Calgary, AB, Canada; 3Applied Science Laboratory, GE Healthcare, Calgary, AB, Canada

In this work we demonstrate L1 constrained reconstruction of a variable density under sampled series, a similar method has been demonstrated for dynamic susceptibility contrast bolus chase imaging. Using the positive contrast of gadolinium in an endovascular catheter we show 3D catheter tracking with high temporal (4.7 Hz) and spatial resolution (64x64x16 acquisition matrix). An acceleration rate of 12.2x is achieved with the constrained reconstruction while maintaining good catheter conspicuity. Maximum intensity projections and 3D iso surfaces are used for rendering catheter images.