Application of the MR proton density fat fraction technology in the quantitative evaluation of fat infiltration in the rotator cuff muscle group after supraspinatus tendon injury
10.3969/j.issn.1002-1671.2025.11.020
- VernacularTitle:MR质子密度脂肪分数技术在冈上肌腱损伤后肩袖肌群脂肪浸润定量评估中的应用
- Author:
Lifang WU
1
;
Li LIN
;
Yi CHEN
;
Yanglin OU
;
Luobing DING
Author Information
1. 第九○九医院(厦门大学附属东南医院)放射科,福建 漳州 363000
- Publication Type:Journal Article
- Keywords:
proton density fat fraction;
supraspinatus tendon injury;
rotator cuff muscle group;
fat fraction
- From:
Journal of Practical Radiology
2025;41(11):1852-1856
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the difference of rotator cuff muscle group fat content by MR proton density fat fraction(PDFF)tech-nology,and to explore the correlation between these variations and the severity grading of supraspinatus tendon injury.Methods Ninety-three patients with supraspinatus tendon injury were retrospectively selected and divided into the tendinitis group(grade Ⅰ),the partial tear group(grade Ⅱ),and the complete tear group(grade Ⅲ).The fat fraction(FF)values of the three groups of rotator cuff mus-cle group were measured using the PDFF technology,and the differences in FF values among the rotator cuff muscle group in the three groups were compared.The risk factors of the grading of supraspinatus tendon injury and the correlation between FF values and the severity grading of supraspinatus tendon injury were analyzed.Results The differences in the FF values of the supraspinatus and infraspinatus muscles among the three groups were statistically significant(P＜0.01).The FF values of both the supraspinatus and infraspinatus muscles were identified as significant factors associated with the severity grading of supraspinatus tendon injury.Further-more,the FF values of the supraspinatus and infraspinatus muscles were positively correlated with the severity grading of supraspina-tus tendon injury(r=0.576,P＜0.01;r=0.510,P＜0.01).Conclusion MR PDFF technology can effectively evaluate the extent of fat infiltration in the rotator cuff muscle group after supraspinatus tendon injury.Specifically,the FF values of the supraspinatus and infraspinatus muscles serve as reliable quantitative indicators for classifying supraspinatus tendon injury.
