CT能谱成像和MRI在跟腱撕裂诊断中的应用

目的初步探讨CT能谱成像和MRI在诊断跟腱撕裂中的影像特点,比较两种方法的应用价值。方法跟腱区疼痛病史患者35例,通过手术确诊跟腱撕裂患者30例,分为完全性撕裂、不完全性撕裂和慢性局限性撕裂3种类型,根据跟腱形态、连续性、密度、信号改变,由影像科专家独立阅片,分析CT能谱成像和MRI影像特点,并对跟腱撕裂的CT能谱成像和MRI检出对照作统计学处理,P<0.05为差异具有统计学意义。结果 CT能谱成像主要表现为跟腱增粗、断端迂曲、密度减低。MRI表现为断端高信号,挛缩。对完全性或不完全性撕裂的诊断,CT能谱成像和MRI比较差异无统计学意义(χ2=0,P>0.05),对慢性跟腱局限性撕裂的诊断,两种检查方法差异有统计学意义(χ2=4.17,P<0.05)。结论 CT能谱成像对跟腱完全或不完全性撕裂有较高的应用价值,而MRI在显示慢性跟腱局限性撕裂方面较CT能谱成像有优势。

Applications of CT spectral imaging and MRI in Achilles tendon rupture

Objective To investigate the imaging features of CT spectral imaging and MRI in Achilles tendon rupture,and to compare the application value of the two methods.Methods CT spectral imaging and MRI were both performed in 35 cases with pain and limitation of motion in the Achilles tendon.30 cases with rupture of the Achilles tendon were confirmed by operation and the patients were divided into complete rupture,incomplete rupture and chronic limitations rupture.Imaging features of the CT spectral imaging and MRI were independently compared and analyzed on the basis of shape,continuity,density,and signal changes of the Achilles tendon by two image experts.The CT spectral imaging and MRI images of the Achilles tendon were compared for statistical analysis.P<0.05 was considered statistically significant.Results CT spectral imaging signs of Achilles tendon rupture were thickening,circuity and density diminution.MRI signs were hyper-intensity and contracture of broken ends.CT spectral imaging and MRI had no significant difference in complete rupture and incomplete rupture(χ2=0,P>0.05),but had significant difference in chronicity limitations rupture(χ2=4.17,P<0.05).Conclusion Compared with MRI,CT spectral imaging has higher application value in complete rupture and incomplete rupture,and MRI is better than CT spectral imaging in chronic limitations rupture.