摘要
目的:探讨踝关节骨挫伤的MRI诊断及鉴别诊断。材料和方法:总结分析11例踝关节外伤性骨挫伤的MR表现,总结其特征。结果:11例病人14个踝关节,17处病灶:胫骨远端7处,距骨滑车5处,胫骨干1处,胫骨内踝2处,腓骨外踝2处。MR形态特点:小碎片状2处;半月形5处;星芒状9处;不规则地图形1处。MR信号特点:9处病灶T_1WI为等信号,8处为低信号;11处病灶T_2WI表现为稍高信号,另6处病灶为等信号中可见星点状稍低信号;全部17处病灶去脂T_2WI均表现高信号。结论:踝关节骨挫伤MR表现特点明确,广泛应用可提高早期诊断率。
Purpose： To explore the MRI diagnosis and differential diagnosis of the ankle bone contusion. Materials and Methods： The MRI appearances of 11 cases of bone contusion in the ankles were retrospectively analyzed and the MRI characteristics of them were summarized. Results： Total of 14 ankle joints of 11 patients , 17 bone contusions were found, of which 7 were located in the distal tibia, 5 in the trochlea tali, 1 in the tibia] diaphysis, 2 in the medial malleolus of tibial and 2 in the external malleolus of fibula. MR imaging showed shape features of patchy in 2 of them, half-moon in 5, starlight in 9, irregular geographic in 1. MR showed signal features of isointense signal in T1WI of 9 foci, hypointense signal in T1WI of 8 foci, hyperintense signal in T2WI of 11 foci, isointense signal with a little starry hypointense signal in T2WI of 6 foci ,hyperintense signal in fat suppression T2WI of all foci. Conclusion： The manifestation of bone contusion of the ankle in MR is characteristic and MR examination will in- crease the diagnostic accuracy of this disease.
出处
《中国医学计算机成像杂志》
CSCD
2008年第4期329-332,共4页
Chinese Computed Medical Imaging
关键词
踝关节
骨挫伤
磁共振成像
诊断
鉴别
Ankle
Bone contusion
Magnetic resonance imaging
Diagnosis,differentiation
