27
Views
17
CrossRef citations to date
0
Altmetric
Original Article

The Diagnostic Value of Phase-Angle Tympanograms

, , &
Pages 1-14 | Published online: 07 Jul 2009
 

Abstract

The diagnostic value of susceptance, conductance, resistance, reactance, admittance and phase-angle tympanograms is compared. Phase-angle tympanograms seem to be best suited for the discrimination between normal W patterns and broad irregular curves obtained from ossicular disruptions, luxations and necroses. Several possibilities are proposed: phase-angle tympanograms at the drum, phase-angle tympanograms at the tip of the measuring probe and corresponding phasor curves. The best choice will depend on the kind of data processing and/or measuring equipment available.

Dans cette étude nous avons comparé la valeur diagnostique des tympanogrammes de susceptance, de conductance, de résistance, de réactance, d' admittance et de phase. Les tympanogrammes de phase, obtenus à l'aide d'un ordinateur PDP 11/03, permettent la meilleure discrimination entre les formes en W normales et les courbes irrégulières obtenues en cas de disruption ossiculaire, de luxation ou de nécrose. Quelques alternatives sont proposées: l'angle de phase dans le plan du tympan ou l'angle de phase à l'extrémité de la sonde ainsi que son phaseur pour les propriétaries d'un appareil à deux composantes, susceptance et conductance; l'angle de phase au niveau des signaux électriques pour tous les autres immitancemetres.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.