CT Image Processing Of Nasal Septal Deviation And Unilateral Inflammatory Maxillary Sinus Disease

Objective:1 , To observe the relation of nasal septum deviation and unilateral inflammatory maxillary sinus disease2, To evaluate the role of nasal septum deviation on etiological factor of unilateral inflammatory maxillary sinus disease. Methods:1 , Fifty-six cases of unilateral inflammatory maxillary sinus diseases (including chronic maxillary sinusitis, maxillary cyst, antro-choanal polyp, mycotic maxillary sinusitis) with nasal septum deviation were collected prospectively and successively. The relation of nasal septum deviation and unilateral inflammatory maxillary sinus diseases was observed by coronal CT scan.2, The CT images from 10 patients were used for image processing. The percentage of cross sectional area of inferior turbinate,uncinate process and middle turbinate in respective nasal cavity was calculated and compared with Kemal Uygur's scale-pape method.The results were compared with normal control (10 case,no nasal septum deviation and no rhinosinusopathia) and statistically analy7ed.3 , The angle of nasal septum deviation was measured and the relation between angle or degree of deviation and unilateral inflammatory maxillary sinus diseases was analyzed. Results:1 , Among 56 cases, 25 cases were found to have unilateral chronic maxillary sinusitis , 17 cases mycotic maxillary sinusitis ,9 cases antro-choanalpolyp, 5 cases maxillary cyst.In patients with unilateral inflammatory maxillary sinus diseases,35 cases were in wide side of nasal cavity,21 cases were in narrow side.2> On the basis of CT image of paranasal sinus of 10 patients, percentage of cross sectional area of inferior turbinate,uncinate process and mesoturbinate were 48.8% in wide side of nasal cavity, 44.1% in narrow side. There was no significant difference between two sides (P>0.05). In 10 cases of normal control,the percentage was 40.1% in right side,39.8% in left side.the result showed no significant differences between two sides of nasal cavity (P>0.05).3^ The CT images from 15 patients were used for image processing.The angle of nasal septum deviation was calculated.The average angle of deviation was 9.52°,5 cases were upper septal deviation. 9 cases were lower than 9.52°, 1 case was upper septal deviation;9 cases were higher than 9.52°,among them, 4 cases was upper septal deviation. Conclusion:1 ? The difference of cross sectional area in nasal cavity was resulted from nasal septal deviation. Compensatory hypertrophy of inferior turbinate,uncinate process and middle turbinate in wide side resulted in the similar proportion of nasal airway of two sides of nasal cavity.However,compensatory hypertrophy lead to obstruction and stricture, accordingly, the probability of unilateral inflammatory maxillary sinus diseases in wide side of nasal cavity was higher than that in narrow side.2 h In clinical practice, the deviated nasal septum shoud be corrected at the time of dealing with inflammatory maxillary sinus diseases. Once normal structure and function of nasal cavity were recovered, the decompensation due to septal deviation was blocked.