磁共振成像2026，Vol.17Issue(3)：228-234,7.DOI:10.12015/issn.1674-8034.2026.03.033
定量MRI技术在长跑人群下肢肌肉评估中的应用进展
Advances in quantitative MRI techniques for assessing lower extremity muscle in long-distance runners
摘要
Abstract
Long-distance running,while enhancing cardiopulmonary fitness and promoting psychological well-being,frequently induces microtrauma and adaptive remodeling in the lower extremity musculature.Conventional imaging modalities exhibit limited sensitivity in evaluating early-stage muscle injury and microstructural alterations.In contrast,quantitative magnetic resonance imaging(qMRI)techniques,such as T2-mapping,diffusion tensor imaging(DTI),intravoxel incoherent motion(IVIM)imaging,fat quantification methods,magnetic resonance spectroscopy(MRS),and chemical exchange saturation transfer(CEST),enable non-invasive and objective assessment of muscle status by quantifying specific biophysical and biochemical parameters.These advanced MRI approaches sensitively detect exercise-induced microstructural perturbations,delineate their spatiotemporal dynamics,and provide critical insights for injury prevention,individualized rehabilitation strategies,and evaluation of training efficacy.However,current research on the application of qMRI in assessing lower limb muscles in long-distance runners still has limitations such as small sample sizes,lack of long-term follow-up,and predominantly cross-sectional designs,resulting in insufficient understanding of spatiotemporal dynamic changes.Therefore,a systematic review is necessary to integrate existing evidence and identify research gaps.This article systematically reviews the current applications and advances of qMRI in characterizing post-exercise changes in lower limb muscles of long-distance runners,with a focus on muscle edema,microstructural integrity,perfusion status,intramuscular fat infiltration,and metabolic alterations,and analyzes the limitations in current research,proposes future research directions,in order to provide references for injury prevention in long-distance running,optimization of rehabilitation strategies,and research in sports medicine.关键词
定量磁共振成像/长跑/下肢肌肉/肌肉微损伤/肌肉代谢/多模态成像/运动医学Key words
quantitative magnetic resonance imaging/long-distance running/lower extremity muscle/muscle microtrauma/muscle metabolism/multimodal imaging/sports medicine分类
医药卫生引用本文复制引用
乔翠,何雪,任志玲,巩方地,付振江,周晟..定量MRI技术在长跑人群下肢肌肉评估中的应用进展[J].磁共振成像,2026,17(3):228-234,7.基金项目
National Natural Science Foundation of China(No.82360358) （No.82360358）
Gansu Province Major Science and Technology Special Program Project(No.23ZDFA013-2). 国家自然科学基金项目(编号:82360358) （No.23ZDFA013-2）
甘肃省科技重大专项计划项目(编号:23ZDFA013-2) （编号:23ZDFA013-2）
