MSCT和MRI在鉴别隐性骨折中的作用

目的:探讨骨隐性骨折的CT、MRI诊断价值。方法:对80例X线平片阴性的外伤患者,再次行CT及MRI检查,伤部位涉及长短壮骨及扁骨及不规骨。结果:CT检查出异常病例30例,可见骨小梁结构较乱,周围软组织肿胀;MRI检查出异常病例50例。显示隐性骨折呈现长T1、短T2或不规则状线形异常信号,其周围可见不规则长T2骨挫伤水肿异常高信号影,均伴有周围软组织水肿的异常信号。结论:X线平片虽为外伤性骨折的基本检查方法,但易漏诊,而CT及MRI可提高隐匿性骨折检出率。尤其是MRI能早期诊断骨隐性骨折,若患者局部症状明显,X线检查无阳性征象者应行CT或MRI检查。

Diagnostic value of MSCT and MRI for identifying occult bone fracture

Objective To evaluate the value of MSCT and MRI scanning in the diagnosis of occult fracture.Method Eighty patients who experienced traumas with obvious clinical symptoms and negative X-ray findings,were accepted MSCT and MRI examinations.Results Thirty patients were detected occult fracture by MSCT,with disorganized bone trabecula and swelling soft tissues.Fifty cases were diagnosed occult fracture by MRI scanning,with abnormal linear signal intensity presented with a long T1 and a short T2.The soft tissues injuries and bone contusion were also detected.Conclusion Compared with radiographic findings,MSCT and MRI are the better methods to diagnose occult fracture,which can avoid the misdiagnosis and the missed diagnosis of occult fractures to a great extent.