Objective: to analyze the CT imaging anatomy of frontal sinus drainage system and its clinical application value. Methods: 50 patients with chronic sinusitis admitted from November 2019 to October 2020 were selected a...Objective: to analyze the CT imaging anatomy of frontal sinus drainage system and its clinical application value. Methods: 50 patients with chronic sinusitis admitted from November 2019 to October 2020 were selected and included in the study. All patients underwent frontal sinus drainage system examination with CT. The patients underwent cross-sectional scanning first, and then underwent coronal and sagittal three-dimensional reconstruction through the workstation. The CT imaging anatomy characteristics of frontal sinus drainage system and its application value in chronic sinusitis were analyzed. Results: in the CT examination results, 100 sides of uncinate process were detected, including the papyraceous lamina, the air chamber of the nasal dome, the middle turbinate, the anterior skull base and the bifurcation accounted for 35.0%, 12.0%, 27.0% and 17.0% respectively, 90 cases of air chamber of the frontal recess were detected, including the terminal air chamber, the air chamber of the nasal dome and the air chamber of the anterior ethmoid, accounted for 55.6%, 22.2% and 22.2% respectively, 92 cases of air chamber of the frontal sinus were detected, including the air chamber of the frontal recess, the air chamber of the supraorbital, the air chamber of the frontal sinus accounted for 32.6% and 43.5%, 23.9% respectively. Conclusion: CT can effectively clarify the anatomical structure of the frontal sinus drainage system and effectively detect various lesions, providing detailed basis for clinical disease diagnosis and surgical treatment.展开更多
Background： The treatment of the condylar fractures is difficult. Factors that result in the fractures are complex. The objective of this morphometric study was to investigate the relationship between condylar fractu...Background： The treatment of the condylar fractures is difficult. Factors that result in the fractures are complex. The objective of this morphometric study was to investigate the relationship between condylar fracture patterns and condylar morphological characteristics. Methods： We conducted a retrospective analysis of 107 patients admitted to the West China Hospital of Stomatology for bilateral condylar fractures caused by parasymphyseal impact. The patients were divided into five groups according to the type of condylar fracture. Ten parameters were evaluated on three-dimensional （3D） reconstruction mandible models through the Mimics 16.0 （Materialize Leuven, Belgium） anthropometry toolkit. Each parameter of the 3D models was analyzed using multivariate analysis. Multinomial logistic regression analyses were used to examine the relationships between the five groups. Results： The results showed that the differences of condylar head width （M 1 ）, condylar neck width （M3）, the ratio of condylar head width to condylar anteroposterior diameter （M1/M2）, the ratio of condylar head width to condylar neck width （M1/M3）, the ratio of condylar height to ramus height （M8/M7）, and mandibular angle （M10） were statistically significant （p 〈 0.05）. Type A condylar head fractures were positively associated with M1 （compared to Type B： OR ：1.627, 95% CI： 1.123, 2.359; compared to Type C： OR = 1.705, 95% CI： 1.170, 2.484） and M1/M2 （compared to Type B： OR = 1.034, 95% CI： 0.879, 2.484）. Type B condylar head fractures were negatively associated with M l 0 （compared to Type C： OR = 0.909, 95% CI： 0.821, 1.007）. Condylar neck fractures were negatively associated with M3 （compared to condylar head： OR = 0.382, CI： 0.203, 0.720 ; compared to condylar base： OR = 0.436, 95% CI： 0.218, 0.874）, and positively associated with M 1/M3 （compared to condylar head： OR = 1.229, 95% CI： 1.063, 1.420 compared to condylar base： OR = 1.223, 95% CI： 1.034, 1.447）. Condylar base fractures were positively associated with M10 （OR = 1.095, 95% CI： 1.008, 1.189） and negatively associated with M8/M7 （OR = 0.855, 95% CI： 0.763, 0.959） as compared with condylar head fractures. Conclusions： Condylar fracture pattern is associated with the anatomical features of the condyles when a fracture occurs from parasymphyseal impact.展开更多
文摘Objective: to analyze the CT imaging anatomy of frontal sinus drainage system and its clinical application value. Methods: 50 patients with chronic sinusitis admitted from November 2019 to October 2020 were selected and included in the study. All patients underwent frontal sinus drainage system examination with CT. The patients underwent cross-sectional scanning first, and then underwent coronal and sagittal three-dimensional reconstruction through the workstation. The CT imaging anatomy characteristics of frontal sinus drainage system and its application value in chronic sinusitis were analyzed. Results: in the CT examination results, 100 sides of uncinate process were detected, including the papyraceous lamina, the air chamber of the nasal dome, the middle turbinate, the anterior skull base and the bifurcation accounted for 35.0%, 12.0%, 27.0% and 17.0% respectively, 90 cases of air chamber of the frontal recess were detected, including the terminal air chamber, the air chamber of the nasal dome and the air chamber of the anterior ethmoid, accounted for 55.6%, 22.2% and 22.2% respectively, 92 cases of air chamber of the frontal sinus were detected, including the air chamber of the frontal recess, the air chamber of the supraorbital, the air chamber of the frontal sinus accounted for 32.6% and 43.5%, 23.9% respectively. Conclusion: CT can effectively clarify the anatomical structure of the frontal sinus drainage system and effectively detect various lesions, providing detailed basis for clinical disease diagnosis and surgical treatment.
文摘Background： The treatment of the condylar fractures is difficult. Factors that result in the fractures are complex. The objective of this morphometric study was to investigate the relationship between condylar fracture patterns and condylar morphological characteristics. Methods： We conducted a retrospective analysis of 107 patients admitted to the West China Hospital of Stomatology for bilateral condylar fractures caused by parasymphyseal impact. The patients were divided into five groups according to the type of condylar fracture. Ten parameters were evaluated on three-dimensional （3D） reconstruction mandible models through the Mimics 16.0 （Materialize Leuven, Belgium） anthropometry toolkit. Each parameter of the 3D models was analyzed using multivariate analysis. Multinomial logistic regression analyses were used to examine the relationships between the five groups. Results： The results showed that the differences of condylar head width （M 1 ）, condylar neck width （M3）, the ratio of condylar head width to condylar anteroposterior diameter （M1/M2）, the ratio of condylar head width to condylar neck width （M1/M3）, the ratio of condylar height to ramus height （M8/M7）, and mandibular angle （M10） were statistically significant （p 〈 0.05）. Type A condylar head fractures were positively associated with M1 （compared to Type B： OR ：1.627, 95% CI： 1.123, 2.359; compared to Type C： OR = 1.705, 95% CI： 1.170, 2.484） and M1/M2 （compared to Type B： OR = 1.034, 95% CI： 0.879, 2.484）. Type B condylar head fractures were negatively associated with M l 0 （compared to Type C： OR = 0.909, 95% CI： 0.821, 1.007）. Condylar neck fractures were negatively associated with M3 （compared to condylar head： OR = 0.382, CI： 0.203, 0.720 ; compared to condylar base： OR = 0.436, 95% CI： 0.218, 0.874）, and positively associated with M 1/M3 （compared to condylar head： OR = 1.229, 95% CI： 1.063, 1.420 compared to condylar base： OR = 1.223, 95% CI： 1.034, 1.447）. Condylar base fractures were positively associated with M10 （OR = 1.095, 95% CI： 1.008, 1.189） and negatively associated with M8/M7 （OR = 0.855, 95% CI： 0.763, 0.959） as compared with condylar head fractures. Conclusions： Condylar fracture pattern is associated with the anatomical features of the condyles when a fracture occurs from parasymphyseal impact.
