Characteristics analysis of three-dimensional computed tomography imaging of the eustachian tube lumen in patients with chronic suppurative otitis media
Li Zhiqun
Song Chao
Liang Maojin
Zheng Yiqing
XU Yaodong
Zhang Zhigang
Chen Suijun
Chen Yuebo
Abstract：ObjectiveAnalyze characteristics of eu-stachian tube anatomic structure using three-dimensional(3D) computed tomography(CT)reformation in patients with chronic suppurative otitis media(CSOM). Explore the relationship between anatomic structure and eustachian tube function by comparing the imaging result to eustachian tube pressure testing.Methods60 patients(including 68 ears)with CSOM and 6 age matched con-trols(including 12 eras)were recruited. Among 68 ears,33 ears which showed eustachian tube dysfunction in eustachian tube pressure test were set as eustachian tube dysfunction group(ETD)and the other 35 ears as normal eustachian tube function group(NETF). All participants underwent CT scanning both in resting state and after performing Valsalva maneuver. 3D CT reformations were done and structural parameters were measured.ResultsSignificant dif-ference were found among the ETD,NETF and control groups for whole cartilaginous portion length(F=4.771,P=0.001),dilated cartilaginous portion length in resting state(F=5.110,P=0.008) and dilated cartilaginous portion length after Valsalva maneuver (F=5.214,P=0.008). In further comparison,no significant difference was found between ETD and NETF groups. For the an-gle between bony portion and cartilaginous portion,no significant difference was found. In CSOM patients,7% showed bony portion abnormity.ConclusionIn CSOM patients,shorter whole carti-laginous portion length,dilated cartilaginous portion lengths in both resting state and after Valsalva maneuver are found. Bony portion abnormities also exist in some of these patients. 3D CT reformation is a valuable tool for showing eustachian tube structure and assessing its function.
Keywords：eustachian tubeThree-dimensional com-puted tomography reformationchronic suppurative otitis mediaacoustic immitance testing
Publication Date：2015-11-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 319-323 )