Volume Measurement of Middle Ear and Mastoid Air Cell System with Impedance Audiometry on Patients with Eardrum Perforations
作者： Pontus Lindeman , Jörgen Holmquist
DOI: 10.3109/00016488209108475
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摘要: The usefulness of the electroacoustic impedance bridge with a probe tone frequency 0.22 kHz in determination middle ear and mastoid volumes was evaluated patients dry eardrum perforations. values obtained were compared determined by an aspiration technique utilizing gas laws. Also, comparison made between size air cell system as measured on x-ray film lateral projection. A significant agreement two methods direct volume found. good relationship found area. audiometry enables rapid valuable estimation reservoir
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