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Fig. 3 | BMC Medical Imaging

Fig. 3

From: Aerodynamic characteristics in upper airways among orthodontic patients and its association with adenoid nasopharyngeal ratios in lateral cephalograms

Fig. 3

Illustration of the airflow feature in two typical cases with an AN ratio of 0.40 (a) and 0.73 (b), during inspiration (the up images) and expiration (the down images), respectively. In the case of an AN ratio of 0.40, the ΔP, Maximum Vms, Maximum Pws and Minimum Pw is − 7.17, 1.95, 0.39, and − 10.75 at inspiration and 7.50, 1.62, 1.44, and − 14.97 at expiration. However, in the case of an AN ratio of 0.73, the corresponding values are − 3.48, 3.62, 1.41, and − 17.06 at inspiration and 5.29, 1.94, 0.59, and − 12.88 at expiration

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BMC Medical Imaging

ISSN: 1471-2342

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