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Abstract #4108

Tracking Respiratory Motion Throughout Arbitrary MRI Sequences via Pilot Tone Navigation

David Rigie1, Thomas Vahle2, Ryan Brown1, Tiejun Zhao1, Matthias Fenchel3, Peter Speier2, Kimberly Jackson1, and Fernando Boada1

1Radiology, NYU School of Medicine, New York, NY, United States, 2Siemens Healthcare GmbH, Erlangen, Germany, 3Siemens Medical Solutions, New York, NY, United States

In this work, we demonstrate a flexible approach to track respiratory motion throughout arbitrary MRI sequences without requiring any additional patient setup time or sequence modification. A reference RF signal, which has previously been referred to as the “pilot tone” (PT), is tracked throughout MR imaging, and its amplitude modulation provides information about respiratory motion. Specifically, we demonstrate continuous tracking of respiratory motion throughout multi-echo and multi-shot sequences on a human volunteer via PT navigation.

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