The application of high resolution CT in the diagnosis of nasal bone fracture

HOU Xue-jian; WANG Xiu-min; WANG Huan

doi:10.3969/j.issn.1009-4237.2018.05.015

Abstract：Objective To investigate the application value of high resolution CT(HRCT)in nasal bone fracture.Methods Retrospective analysis was conducted in 45 patients with fractures of the nasal bone diagnosed in our hospital from Jan.2015 to Apr.2016,including 30 males and 15 females,with an average age of 27.2 years (mean,18 to 61 years).There were 20 road traffic injuries,17 blunt injuries,and 8 falling injuries.At the same time,40 normal volunteers were selected,including 23 males and 17 females,with an average of 28.2 years(range, 19 to 60 years).The X-ray lateral view of the nasal bone and the HRCT scan were performed respectively,and the diagnostic value of the two examination methods was compared.Results Among 45 patients,31 cases(68.89%) were diagnosed as nasal bone fractures by X-ray examination,and 43 cases(95.56%)were diagnosed as nasal bone fractures by HRCT.Among 40 normal subjects,2 cases(5.00%)were misdiagnosed as nasal bone fractures by X-ray examination and 1 case(2.50%)by HRCT.The sensitivity of HRCT was 95.56%,which was significantly higher than 68.89% of X-ray examination,with statistical differences(P<0.05).The specificity of HRCT and X-ray examination was 95.00% and 97.50%,respectively,and the difference was not statistically significant(P >0.05).Conclusion In the diagnosis of nasal bone fractures,HRCT has a high application value,which helps di-agnosis and reduces missed diagnosis.