The true positive ratios of A-P &lateral plain film,A-P &lateral &oblique plain film,CT scan combined with X-ray plain film and 3D-CT were respectively 41.2%,77.8%,0,100%.

• 正侧位、正侧及斜位X线片 ；CT平扫及 3D -CT作为影像学诊断工具的真阳性率分别为 41.；2%25；77