Objective: To compare the CT scan results in patients with deviation of nasal septum and normal adults and to explore its values in evaluating the state of nasal ventilation.
Method: Twenty-six patients with deviation of nasal septum and 15 normal people were recruited in the study. The nasal airway from anterior nostril to posterior nostril was evaluated with PhlipsTomos scan AV Expander Elspiral scanner. The indexes of nasal ventilation was measured with the image-analysis software. The results of CT scan between patients with deviation of nasal septum and normal people was compared.
Result: (1) There was obvious difference between patients with deviation of nasal septum and normal people in the NMCSA, IMCSA, DNCAT and DICAT. There was obvious difference between patients with deviation of nasal septum with obstruction in the opposite side and normal people in the ONMCSA and ODNCAT. There was obvious difference between patients with deviation of nasal septum without obstruction in the opposite side and normal people in the ODNCAT. (2) In the patients with deviation of nasal septum, between nasal minimal cross sectional area and inferior turbinate's maximum cross sectional area, there is obvious relation, r = -0.394, P < 0.05.
Conclusion: CT is one kind of objective inspection method in evaluating the state of nasal ventilation. With the measurement of the nasal morphology and functional index, we can understand the state of nasal ventilation more comprehensively. And with this, the treatment and diagnosis of disease with nasal obstruction will be more scientific.