Method and diagnostic value of oblique coronal image reconstruction of nasal bone by MSCT

WANG Shuwen; ZHANG Tao; WU Jing; LU Lingquan

Abstract：Objective To explore the method and diagnostic value of oblique coronal MPR of nasal bone with MSCT.Meth-ods 176 patients who underwent MSCT of nasal bone due to trauma were selected,retrospectively.Then,two different angle coronal reconstructions(angle 1 was routine coronal reconstruction;angle 2 was oblique coronal reconstruction)were conducted on all images.The detection rate and diagnostic accuracy of nasal bone fracture were compared.Results The detection rate of conventional coronal fractures was 84.93%(22 cases in false negative),and the detection rate of oblique coronal fractures was 100%(3 cases in false positive).The difference between groups was statistically significant(P=0.002).There were 76 cases of simple nasal bone fracture,36 cases of compound nasal bone fracture,4 cases of simple nasal septum fracture and 8 cases of simple maxillary frontal process fracture on routine coronal images,with the diagnostic accuracy of 54.00%;while,via oblique coronal reconstruction,those were 80 cases,57 cases,2 cases and 10 cases,correspondingly,with an accuracy of 96.00%.The difference between the groups was statistically significant(P<0.001).Conclusion The detection rate and diagnostic ac-curacy of oblique coronal reconstruction are significantly higher than that of conventional coronal,which has more advantages in clinical application.