创伤性关节积脂血征的CT及MRI诊断  

Diagnosis of traumatic lipohemarthrosis by CT and MRI

作　　者：赵英杰[1] 李振龙[1] 吕超伟[2] 张鹏[1] 吕淑缅[2] 陈雷[2] 黄清海[2] 

机构地区：[1]福建中医学院附属厦门市中医院放射科,厦门361009 [2]厦门市第三医院磁共振室

出　　处：《中华放射学杂志》2006年第5期530-533,共4页Chinese Journal of Radiology

摘　　要：目的分析创伤性关节积脂血征的CT及MR I表现特点,探讨CT及MR I对创伤性关节积脂血征的诊断价值。方法回顾性分析50例创伤性关节积脂血征患者的CT及MR I的影像学特征。其中膝关节36例、髋关节8例、肘关节4例及肩关节2例。所有患者均于受伤后1 h至4 d内行CT及MR I检查。结果50例创伤性关节积脂血征患者均存在关节内骨折,创伤性关节积脂血征的CT及MR I表现为在关节囊内特征性的单液-液平面或双液-液平面积液征象。其中22例表现为单液-液平面积液征象,28例表现为双液-液平面积液征象。构成单液-液平面上、下2层液体和双液-液平面的上、中、下3层液体有明显不同的CT值和所有扫描序列中MR I信号强度。结论创伤性关节积脂血征的CT及MR I检查均有特征性表现,CT及MR I检查可明确诊断创伤性关节积脂血征,创伤性关节积脂血征与关节内骨折并存,可以作为关节内骨折的可靠的间接征象。Objective To evaluate the characteristics of CT and MRI manifestations of traumatic lipohemarthrosis. Methods The CT and MRI characteristics of 50 cases （36 knees, 8 hips, 4 elbows and 2 shoulders） with traumatic lipohemarthrosis were studied retrospectively. CT and MRI scanning of all cases were performed between 1 hour and 4 days after trauma. Results Intra-articular fractures were showed on CT and MRI in all fifty cases with traumatic lipohemarthrosis. CT and MRI characteristics of traumatic lipohemarthrosis were single fluid-fluid levels or double fluid-fluid levels in the joint capsule. Twenty-two cases were single fluid-fluid levels, 28 cases were double fluid-fluid levels in the joint capsule in this group. CT attenuations and MR signal intensity on all scan sequences of the superior band and the inferior band of single fluid-fluid levels or the superior band, the central band and the inferior band of double fluid-fluid levels were different. Conclusion Traumatic lipohemarthrosis has typical CT and MRI appearance. Traumatic lipohemarthrosis alert to the coexistence of an intra-articular fracture and is a clinically useful sign in detecting intra-articular fracture.

关 键 词：创伤和损伤 关节 体层摄影术 X线计算机 磁共振成像 

分 类 号：R445[医药卫生—影像医学与核医学]