The use of high-speed, continuous, T2-weighted magnetic resonance sequences and saline for the evaluation of swallowing.

OBJECTIVE To introduce a new high-speed, continuous, T2-weighted magnetic resonance imaging (MRI) technique for the evaluation of swallowing by visualizing the flow of saline. STUDY DESIGN In 20 healthy participants, high-speed (10 frames per second), continuous MRI of the pharynx and larynx was performed during administration of 5 mL of saline. The extent to which fluid flow and swallowing (including flow to the esophagus or trachea) could be visualized was determined for all 20 participants. RESULTS Solution flow was visualized, and swallowing events, including the direction of flow to the esophagus, could be visualized with high-speed, continuous MRI for all 20 participants. CONCLUSIONS This initial study suggests that the visualization of saline flow using our method may facilitate functional evaluation of swallowing without side effects.

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