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Abstract #3188

Pilot Tone-based Diaphragm Motion Estimation for Navigator-Triggered Magnetic Resonance Cholangiopancreatography

Xinzhou Li1, Bernd Kühn2, and Waqas Majeed3
1Siemens Medical Solutions USA, Inc., Saint Louis, MO, United States, 2Siemens Healthineers AG, Forchheim, Germany, 3Siemens Medical Solutions USA, Inc., San Francisco, CA, United States

Synopsis

Keywords: Motion Correction, Motion Correction

Motivation: Navigator-triggered MRCP suffers from respiratory motion due to long echo train. Pilot tone is a novel sensor to monitor physiological motion but has never been applied to obtain comprehensive motion information to improve MRCP.

Goal(s): Develop a pilot tone-based diaphragm motion estimation framework.

Approach: Design an adaptive correlation model and Kalman filter to estimate diaphragm motion using pilot tone during the period without navigators and make comparisons with trigger positions.

Results: The framework enables estimation of diaphragm motion while maintaining continuity with the navigator-derived diaphragm position. The results expand the knowledge of motion effects in MRCP and offer insights for improving image quality.

Impact: This study demonstrates that the pilot tone-based diaphragm motion estimation framework enables estimation of motion information associated with navigator-triggered MRCP acquisitions. These results have potential to improve image quality and workflow of MRCP scans.

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