【摘要】 目的 探讨CT、MRI对隐匿性骨折的诊断价值。方法 63例急性外伤患者均行X线摄片检查，对X线摄片有怀疑、临床体征明显或随访仍有怀疑、或软组织肿胀明显的病例做CT和(或)MRI检查，共检出隐匿性骨折51例。结果 所选病例外伤X线平片均未显示明显骨折线，隐匿性骨折阳性率达81.0%(51/63)。27例行CT检查，其中22例做CT三维重建，均清楚显示骨折线；20例行MRI检查，显示骨挫伤12例、骨折8例；4例骨折同时行CT和MRI检查。结论 骨创伤性病变影像诊断中，CT、MRI对X线平片不易发现或临床体征、症状不能除外的骨折，是有效的检查手段。

    【关键词】 骨折；断层摄影术；X线计算机；磁共振成像

    CT and MRI imaging in obscure fractures

    XU Jin-ming,LU Xiao-ling,XUE Xiao-yu.

    Department of Radiology,Yangpu Central Hospital,Shanghai 200090,China

    【Abstract】 Objective To investigate the value of CT，MRI in detecting obscure fractures.Methods Sixty-three cases with acute trauma were examined using radiography,CT and/or MRI,when plain films failed to reveal suspected fractures,suggestive clinic symptoms or follow up,or soft tissues in evident swelled,51 cases were found obscure fractures.Results All 63 cases had normal radiographic results,the detective rates were 81.0%(51/63).27 cases were studied using CT when 22 cases were studied using three-dimensional(3D) CT reconstruction,fractural lines were found without exception;20 cases were studied using MRI,12 cases were found bone contusions,8 cases were found fractures;4 cases of fractures underwent CT and MRI.Conclusion In the image diagnosis of bone trauma,CT ......