Erschienen in:
04.04.2018 | Vascular-Interventional
Fluoroscopic subtraction Eustachian tubography: initial feasibility test in a cadaver model
verfasst von:
Kun Yung Kim, Woo Seok Kang, Jung-Hoon Park, Byung-Chul Kang, Jun Woo Park, Min Tae Kim, Nader G. Bekheet, Seung Jun Hwang, Joonmyeong Choi, Kyu-Jin Cho, Hong Ju Park, Ho-Young Song
Erschienen in:
European Radiology
|
Ausgabe 9/2018
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Abstract
Objectives
To evaluate the technical feasibility of direct Eustachian tube catheterisation and subtraction Eustachian tubography in a cadaver model.
Methods
A total of 12 separate sessions were performed on both sides of the Eustachian tube (ET) in six human cadavers. Cadavers were positioned for the submentovertical view on a fluoroscopy table. Endoscopy-guided ET selection was used in the first three cadavers, whereas fluoroscopy-guided ET selection was used in the remaining three. Eustachian tubography was performed by injecting 2 ml of contrast media through a 5-Fr catheter. We recorded the success of ET selection, number of attempts, procedure time, and tubography quality using native and subtraction images (range, 0–3).
Results
Both endoscopy- and fluoroscopy-guided selections were successfully performed in five of six sessions (83.3%). There were no statistically significant differences between the endoscopy- and fluoroscopy-guided procedures in terms of the number of attempts, procedure time, rate of immediate contrast leak to the middle ear cavity, and quality of tubography (p > 0.05). An excellent quality of tubography was obtained in 83.3% (10 of 12 sessions) of subtraction images and in 33.3% (4 of 12 sessions) of native images. The tubography quality score was significantly higher for the subtraction images than for the native images (p = 0.04).
Conclusion
Subtraction Eustachian tubography using direct catheterisation seems to be technically feasible. The entire ET can be well visualised; thus, this technique can be used as a simple tool for assessment of ET function and anatomy.
Key Points
• Direct catheterisation of the Eustachian tube is technically feasible.
• The entire Eustachian tube could be well visualised by direct Eustachian tubography.
• Subtraction Eustachian tubography images have better image quality than native images.
• Subtraction Eustachian tubography can provide objective assessment of ET function and anatomy.