Multi-frequency tympanometry

-basic issues-

Abstract

　　Basic issues that may be useful in interpreting the results of multi-frequency tympanometry (MFT) are discussed in the present paper. MFT is a useful tool that is used to detect subtle changes (changes in the resonance characteristics) in the middle-inner ear vibration system. However, there are certain limitations in the diagnosis based on MFT measurement alone. It is important to understand the characteristics as well as the limitations of MFT, in order to make a comprehensive diagnosis of middle/inner ear pathologies together with other findings.