高场磁共振对骨挫伤的诊断价值.pdfVIP

第36卷第2期 南华大学学报-医学版 2008年3月 Vo1．36 No．2 Joumal of Nanhua Uni、 ersity(Medical Edition) Mar．20o8 高场磁共振对骨挫伤的诊断价值 高 鑫，龙廉国，刘小兵 (邵阳市中心医院( 室，湖南邵阳422000) 摘 要：目的 探讨高场磁共振(MRI)对骨挫伤的诊断价值。方法 回顾性分析35例骨挫伤患者 x线平片、CT及高场强(1、5T)MR1检查资料，并比较各常用MRI序列的信号强度和特点。结果 本组 35例x线平片均未见骨折征象，CT检查亦无明显骨折征象，仅见周围软组织肿胀和关节腔积液，高场 强MR1检查，sE序列T wI表现为不规则斑片状、地图状及长条状低信号， r)wI表现为不规则高信号 (12例)、等信号(6例)、低信号(17例)；质子加权预饱和脂肪抑制(PDW—FS)序列均表现为明显高信号； 所有病例都有不同程度软组织损伤和关节腔积液。结论 在X线平片、CT及MRI三种影像检查方法 中，MR1是能有效诊断骨挫伤的检查方法。在高场MRI检查的各常用序列中，PDW—FS序列是明确诊 断的最佳序列。 关键词：骨挫伤； 磁共振成像； 高场磁共振； X线摄影 中图分类号：R816．8 文献标识码：A 文章编号：1672—7444(2008)02—0188—04 The Value of High Field Strength MRI in Diagnosis of Bone Contusion GAO Xin，LONG Lian—guo，HU Xiao—bing (Department of’CT，Shaoyang Central Hospital，Shaoyan~，Hunan 422000，China) Abstract：0bjective 1o investigate the diagnostic value of high field strength MRI in bone contusion． Methods Imaging data of X—ray，CT and MRI of 35 cases with bone contusion were analyzed retrospectively． The signal intension and features of different routine MRI pulse sequences were compared． Results No fracture of all patients was found on plain film．CT scanning showed there were only surrounding soft tissue swelling and liq— uid of articular capsule，and no obvious fracture．MRI findings with SE sequence were irregular patchy，maps and strip hypo—intensity on TI—weighted imaging in all the 35 cases and hyper—intensity．signal(12 case)，minority equal—intensity signal(6 cases)，hypo—intensity signal(1 7 cases)on T2一Weighted imaging．MRI findings were obvious hyper——intensit)signal on Fat Supression sequence and soft tissue edema signal to different extent in al1 the cases with liquid of artic