| Objective:Based on the three-dimensional reconstruction of maxillary sinus morphology from CT images,the differences of maxillary sinus diameter and morphology among adults of Tibetan,Han and Hui nationalities were preliminarily explores in Qinghai area.This paper discusses which maxillary sinusitis forms are prone to maxillary sinusitis in Tibetan,Han and Hui nationalities from the perspective of image morphology.Methods:The adults who were admitted to the Affiliated Hospital of Qinghai University and underwent high-resolution sinus CT examination were collected,and adults who met the inclusion and exclusion criteria were selected as the research subjects.The general case data such as age,gender,height,weight,smoking history,ethnicity,and whether or not suffering from maxillary sinusitis were statistically analyzed for all included subjects.Finally,174 subjects who were diagnosed by otolaryngologists and radiologists who were diagnosed with sinusitis were included as the control group,and those who were diagnosed with unilateral or bilateral maxillary sinusitis by otolaryngologists and radiologists were also included 177 cases were in the disease group,a total of 351 cases.The scanned CT images of the paranasal sinuses were used to reconstruct the three-dimensional morphology of the maxillary sinuses.The diameters of the maxillary sinuses,the length of the anterior and posterior diameter,the left and right diameter,and the upper and lower diameters(length,width,and height),were measured,and then the gasification coefficient of the maxillary sinuses was calculated(Formula shape=measured volume /estimated volume(length×height×width),which represents the degree of gasification of maxillary sinus).Then,the control group,the disease group,and the Tibetan,Han,and Hui groups,the diameters and the three-dimensional morphology of the maxillary sinus were compared.To explore:(1)Whether there are differences in the diameters and three-dimensional morphology of the maxillary sinus(volume size,degree of gasification,and sinus floor morphology)between the Tibetan,Han and Hui ethnic groups in the control group and the disease group;(2)Which form of maxillary sinus is prone to maxillary sinusitis in the control group and disease group of different ethnic groups in Tibetan,Han and Hui nationalities.Results:(1)In the control group,the values of the maxillary sinus diameter(length,width,height),volume,gasification coefficient,volume size(small,medium,and large three types),gasification degree(depression,moderate and full three type)among Tibetan,Han and Hui nationalities,the difference was statistically significant(P<0.05): the length,height,volume and gasification coefficient of the maxillary sinus of the Tibetans were larger than those of the Hui and Han nationalities,and the degree of gasification was more plump.There was no significant difference in the maxillary sinus floor morphology(concave,flat,convex,and atypical four types)among Tibetan,Han,and Hui ethnic groups(P>0.05): concave and flat were the main types.).(2)In the disease group,there was no significant difference in the diameter,volume size and gasification degree of the maxillary sinus among Tibetan,Han and Hui nationalities(P>0.05);There was statistically significant difference in the morphology of the maxillary sinus floor(P<0.05):Among them,the Tibetan people are mainly concave,the Han people are mainly convex,and the Hui people are mainly concave.(3)The control group and the disease group were not divided into ethnic groups.In the comparison of the diameters between the two groups,there was no significant difference in the width and height of the maxillary sinus(P>0.05),but there were significant differences in the length,volume,gasification coefficient,volume size,degree of gasification and sinus floor morphology between the two groups(P<0.05): the length,volume and gasification coefficient of maxillary sinus in the control group were larger than those in the disease group;But the control group and disease group were mainly medium volume;the degree of gasification in the control group is mainly moderate and full,and the disease group is mainly of depression;the sinus floor morphology in the control group is mainly flat and concave,and the disease group is mainly concave and convex.(4)There were statistically significant differences in the diameter and three-dimensional morphology of Tibetan maxillary sinus in the control group and the disease group(P<0.05): the length,volume and gasification coefficient of the maxillary sinus in the control group were all greater than those in the disease group;the control group had the largest medium volume,moderate gasification degree,and concave sinus floor morphology;the disease group had the largest medium volume,the degree of gasification was mainly of depression,and the sinus floor morphology was mainly concave.(5)There were statistically significant differences in the maxillary sinus diameter,gasification degree and sinus floor morphology in the Han nationality between the control group and the disease group(P<0.05): the height of the maxillary sinus in the disease group was greater than that in the control group,and the gasification coefficient was lower than that in the control group;The degree of gasification in the control group was mainly moderate,and the disease group was mainly of depression;the maxillary sinus floor in the control group was mainly concave,and the disease group was mainly convex.There was no significant difference in the volume of maxillary sinus between the two groups(P>0.05),and the volume of maxillary sinus was mainly medium.(6)There were significant differences in the diameter,volume and gasification degree of the Hui maxillary sinus between the control group and the disease group(P<0.05): the length,volume and gasification coefficient of the control group were greater than those of the disease group;The control group and disease group were mainly of medium volume;The degree of gasification in the control group was mainly moderate,and the disease group was dominated by depression.There was no significant difference in sinus floor morphology between the two groups(P>0.05):all were concave.Conclusion:(1)There are differences in the maxillary sinus diameter and three-dimensional morphology among different ethnic groups in Qinghai:the maxillary sinus diameter and volume of Tibetan are larger than those of Han and Hui,and the degree of gasification is better than that of Han and Hui.There was no difference in the distribution of sinus floor morphology among different ethnic groups,mainly concave and flat.(2)Maxillary sinusitis occurs in all types of volume and morphology,but it increases in small volume and depression form of maxillary sinuses,and the sinus floor of the inflamed maxillary sinus is concave and convex.Therefore,early attention can be paid to this form of maxillary sinuses in clinical diagnosis and treatment,which provide a reference basis for early detection,early diagnosis and follow-up research of maxillary sinusitis. |
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