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Abstract #0989

Quantitative geometric assessment of regional airway collapse in neonates via retrospectively respiratory-gated 1H UTE MRI

Nara S. Higano1,2, Alister J. Bates1,3, Erik B. Hysinger4, Robert J. Fleck5, Andrew D. Hahn6, Sean B. Fain6,7, Paul S. Kingma8, and Jason C. Woods1,2,4,5

1Center for Pulmonary Imaging Research, Cincinnati Children's Hospital, Cincinnati, OH, United States, 2Physics, Washington University in St. Louis, St. Louis, MO, United States, 3Upper Airway Center, Cincinnati Children's Hospital, Cincinnati, OH, United States, 4Pulmonary Medicine, Cincinnati Children's Hospital, Cincinnati, OH, United States, 5Radiology, Cincinnati Children's Hospital, Cincinnati, OH, United States, 6Medical Physics, University of Wisconsin - Madison, Madison, WI, United States, 7Radiology, University of Wisconsin - Madison, Madison, WI, United States, 8Neonatology and Pulmonary Biology, Cincinnati Children's Hospital, Cincinnati, OH, United States

Neonatal airway malacia (dynamic larynx, trachea, and/or bronchi collapse) is a common airway complication often associated with preterm birth and congenital abnormalities but has not been extensively studied. This condition is currently diagnosed through visual bronchoscopy, which can be unreliable and poses increased risks to patients. We address these issues with an innovative technique using retrospectively respiratory-gated ultrashort echo time MRI and geometric analysis of moving airway anatomy for regional, quantitative evaluation of dynamic airway collapse in quiet-breathing, non-sedated neonates. This method has the potential to yield more accurate and objective assessment of neonatal airway collapse than current techniques allow.

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