磁共振成像在闭合性跟腱损伤诊断中的价值

目的探讨磁共振成像(MRI)在闭合性跟腱损伤中的诊断价值,包括判断损伤性质、损伤程度和疗效随访。方法2003年4月～2005年5月24例闭合性跟腱断裂伤患者经低场强MRI扫描,MRI采用矢状面T1WI、T2WI、GE-STIR和横断面TME,层厚和层距各为4mm。并根据MRI分级诊断标准确定是部分性损伤还是完全性损伤。其中4例4～8周后复查MRI。结果MRI能准确判断跟腱撕裂的程度、部位,跟腱撕裂主要发生在跟腱中部。16例跟腱完全断裂患者在所有序列上显示跟腱连续性中断,跟腱增粗,T2WI断端间呈高信号;8例跟腱部分断裂患者T2WI显示条状高信号。术后随访4例患者见跟腱变细,信号降低。结论MRI能对跟腱撕裂程度及部位做出准确判断,直接显示跟腱内的信号变化并提供丰富的信息,对临床治疗具有重要参考价值。

The value of MRI in diagnosis of Achilles tendon rupture

Objective To evaluate MRI in diagnosis and follow-up of Achilles tendon rupture. Methods From April 2003 to May 2005, 24 cases of closed Achilles tendon rupture were examined in our department with MRI. It was performed through sagittal T1WI, T2WI, GE-STIR and axial TME imaging. Four cases were followed up with MRI after 4 to 8 weeks. Results MRI could determinate the severity and exact location of Achilles tendon rupture by demonstrating signal changes of Achilles tendon. In this series, complete rupture of Achilles tendon mostly occurred at the median part, with augmentation and high signal on T2WI. MRI demonstrated high signal on T2WI in partial rupture of Achilles tendon. The signal intensity in the four cases followed up by MRI was shown to decrease. Conclusion MRI is a valuable tool for clinical diagnosis and follow-up of Achilles tendon, because it provides enough information through signal changes at the tendon.