MRI评价前交叉韧带重建术后移植物成熟度的研究进展

Research progress of MRI in evaluating graft maturity after anterior cruciate ligament reconstruction

评估前交叉韧带(ACL)重建术后移植物的成熟度是指导术后病人康复训练的重要环节,但目前尚缺乏评估移植物成熟度的统一、定量、无创的指标。MRI是ACL重建术后的重要检查方法,可以分析移植物的解剖位置、韧带化程度、血运重建程度、力学特性及预后。就ACL重建术后移植物的成熟机制、常规MRI以及T2*mapping、超短回波时间(UTE)、扩散张量成像(DTI)、T1ρmapping、动态增强磁共振成像(DCE-MRI)多种MRI定量和半定量分析技术在评价移植物成熟度中的应用进展进行综述。

Assessing the maturity of the graft after anterior cruciate ligament(ACL)reconstruction is an important step to guide rehabilitation training for postoperative patients.However,there is still a lack of unified,quantitative,noninvasive index to evaluate the maturity of the graft.MRI is an important examination method after ACL reconstruction.It can be used to analyze the anatomical position of the graft,degree of ligamentization,degree of revascularization,mechanical characteristics and prognosis of the graft.This article reviews the mature mechanism of grafts after ACL reconstruction.This article also reviews the progresses of conventional MRI and T2*mapping,ultra-short echo time(UTE),diffusion tensor imaging(DTI),T1ρmapping,and dynamic enhanced magnetic resonance imaging(DCE-MRI)and various MRI quantitative and semiquantitative analysis techniques in the evaluation of graft maturity.