Abstract #2978

Evaluation of bSSFP for the visualisation of Human fetal esophageal and tracheal obstruction and swallowing

Andrew Fry¹, Elspeth Whitby², and Peter Wright¹

¹Medical Physics, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom, ²Academic Unit of reproductive and developmental medicine, University of Sheffield, Sheffield, United Kingdom

A balanced steady-state free precession (bSSFP) sequence gives excellent fluid/tissue contrast and allows rapid repeat acquisition of a single slice, resulting in a cine image dataset. We evaluate the bSSFP sequence to image fetal swallowing action and passage of fluid in the esophagus and airway in 7 human fetuses. Regurgitation of amniotic fluid is observed where major or total obstruction is present. Optimised bSSFP sequences are demonstrated at 1.5T and 3.0T and can be used in assessment of obstruction and swallowing in a wide variety of cases including esophageal atresia, neck masses, CHAOS and cleft palate.

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