Evaluation of Eustachian Tube Function by Contrast Roentgenography
Iwao Honjo, K. Ushiro, Nobuhiro Okazaki, T. Kumazawa · Archives of Otolaryngology - Head and Neck Surgery · 1981
Contrast roentgenography and cineroentgenography were carried out on nine patients with perforated eardrums to reveal the opening process of the Eustachian tube and its pumping-like clearance function in human beings. The results were as follows: (1) the tubal lumen opens along the cartilaginous part of the tube owing to the outward displacement of its lateral wall; (2) the pumping function of the tube consists in two phases: accumulation of the fluid in the tube by tensor contraction and discharge of the fluid by tensor relaxation.