The Value of DR and DTS in the Diagnosis and Classification of Atlantoaxial Subluxation
Objective To observe the imaging findings of atlanto-axial joint subluxation and discusses the value of DR and Digital tomosynthesis(DTS)in the diagnosis and classification.Methods Retrospectively collected 67 cases diagnosed as atlanto-axial joint subluxation through clinical and radiographic examinations,analyzed CT imaging manifestations,and compared the image quality,diagnostic accuracy and diagnostic consistency of atlantoaxial joint X-ray AP film of open mouth view+lateral film,and tomographic AP film+lateral film.Results There were 6 cases of anterior dislocation of atlas,40 cases of lateral dislocation,17 cases of rotational dislocation and 4 cases of compound dislocation.57％of DR images and 94％of DTS images can be used for diagnosis,with a statistically significant difference(P＜0.05).The total diagnostic accuracy of DR images was 42％,and the total diagnostic accuracy of DTS images was 81％,with a statistically significant difference(P＜0.05).The total diagnostic accuracy of DR images was 24％,and the total diagnostic accuracy of DTS images was 76％,with a statistically significant difference(P＜0.05).The accuracy rate of lateral dislocation on DR images was the highest(38％),and the accuracy rate of diagnosing atlantoaxial anterior dislocation was 17％.The accuracy of DTS images in diagnosing dislocation before diagnosis was the highest,100％,92％for lateral dislocation,29％for rotational dislocation and 75％for compound dislocation.There was no statistical difference in the accuracy of diagnosis of anterior dislocation between the two groups,but there was significant difference in the accuracy of diagnosis of lateral dislocation(P＜0.05).The consistency of DR images in the diagnosis of atlantoaxial subluxation was poor(Kappa=0.27,P＜0.05),and the consistency of DTS images was moderate(Kappa=0.68,P＜0.05).Conclusion The image quality of DTS is obviously better than that of DR,and its accuracy and consistency in the diagnosis and classification of atlantoaxial subluxation are also significantly higher than that of the latter.
Atlantoaxial SubluxationX-ray Digital Tomographic Fusion Imaging TechnologyDiagnosisUniformity
NETL
NSTL
万方数据
维普
