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MR diagnosis of articular cartilage injury in the knee: compared with arthroscopy

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF RADIOLOGY
Issue:
7
DOI:
10.3760/j.issn:1005-1201.2005.07.013
Key Word:
软骨,关节;磁共振成像;关节镜检查;膝关节

Abstract´╝Ü 目的分析不同MR扫描序列对关节软骨损伤的诊断能力,为关节软骨损伤的临床诊断和治疗提供可靠的影像学依据.方法对临床拟行膝关节镜检查的膝关节疼痛患者进行术前MR成像,对MR图像进行二维和三维重建处理.结果与关节镜对照,34例膝关节软骨损伤患者的MR检查结果:脂肪抑制三维稳态进动快速成像序列(fat-saturated three-dimensional fast imaging with steady-state procession,FS-3D-FISP)敏感度为91.4%、特异度为97%、 Kappa值为0.818,脂肪抑制二维快速小角度激发成像序列(fat-saturated tow-dimensional fast low angle shot, FS-2D-FLASH)敏感度为77.1%、特异度为98%、 Kappa值为0.531,SE-T1WI序列敏感度为70%、特异度为99%、Kappa值为0.518. 本组无明确急性外伤史的关节软骨损伤病例中有77.6%在病变部位出现与损伤软骨区相对应的软骨下骨及骨髓内片状T1WI低信号影,FS-3D-FISP及FS-2D-FLASH序列呈高信号.结论 FS-3D-FISP序列对关节软骨损伤病变的准确性明显优于FS-2D-FLASH和SE-T1WI, 与关节镜诊断结果之间具有良好的一致性.软骨下骨及骨髓内的异常信号是关节软骨损伤重要的间接征象.关节软骨损伤的三维成像有利于临床术前对重度膝关节软骨损伤进行立体定位诊断.

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