CT imaging of the eustachian tube using focal contrast medium administration: a feasibility study.

Objectives: We aim to develop an imaging technique for visualization of the Eustachian tube (ET) lumen.

Study Design: A prospective, experimental study in an animal model and in human cadaver specimens.

Methods: Applying iodixanol to the middle ear in two human temporal bone specimens, followed by computed tomography (CT) examinations, we optimized contrast dilution, CT algorithm, and head positioning for visualization of contrast passage through the ET.