4-Phase-Rhinomanometry (4PR)--basics and practice 2010.

The last comprehensive publications about the theory and practice of rhinomanometry appeared more than 20 years ago. Since the 1980's, the general progress of sensor techniques, fluid physics and data processing was accompanied by the permanent work of the authors to analyze the errors of rhinomanometry and to create a fundament for a contemporary and practical method that can be used in functional diagnostics of the nasal air stream. In this special document, the objectives and measurement principles, as well as the history of rhinomanometry are described in the first three chapters.