Magnetic resonance rotator cuff fat fraction and its relationship with tendon tear severity and subject characteristics
Magnetic resonance rotator cuff fat fraction and its relationship with tendon tear severity and subject characteristics
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DOI：
10.1016/j.jse.2015.01.013
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发表时间：
2015-09-01
影响因子：
3
通讯作者：
Ma, C. Benjamin
中科院分区：
文献类型：
--
作者：
Lee, Sonia;Lucas, Robert M.;Ma, C. Benjamin
背景资料：与Goutallier分类相比，基于化学位移的磁共振（MR）脂肪定量在评估肌肉脂肪浸润方面具有上级可靠性和准确性。我们使用这种方法来评估肩袖（RC）肌肉脂肪分数，肌腱疾病的严重程度，和主题characteristics.Methods之间的关系：在总的，182例受试者的肩部症状进行了肩部MR成像，包括额外的序列脂肪定量。然后，手动分割脂肪分数图，并使用定制软件计算脂肪分数。还获得了Goutallier评分。脂肪分数与肌腱撕裂严重程度和受试者特征之间的关系通过描述性统计、方差分析、不同亚组的Student t检验以及简单和多元线性回归分析进行评估。在肌腱撕裂>3 cm、回缩>1 cm、年龄>50岁、体重指数（BMI）>30、Goutallier评分较高，女性，症状持续时间较长。RC脂肪分数与肌腱疾病严重程度、年龄和BMI之间存在显著的线性关系，但与症状持续时间无关。脂肪分数和肌腱疾病、年龄、BMI和性别的多元回归模型对所有4块肌肉都有显著意义（P < .001）。调整肌腱疾病，体重指数，和gender.Conclusion：RC脂肪分数评估的化学位移MR表现出显着的线性关系，肌腱撕裂的严重程度，年龄，体重指数，和性别，但不与症状持续时间后，随着年龄的脂肪浸润增加的斜率降低。爱思唯尔公司出版代表肩肘外科杂志董事会。
Background: Compared with the Goutallier classification, chemical shift-based magnetic resonance (MR) fat quantification has superior reliability and accuracy in evaluation of muscle fatty infiltration. We used this method to assess the relationship between rotator cuff (RC) muscle fat fractions, tendon disease severity, and subject characteristics.Methods: In total, 182 subjects with shoulder symptoms underwent shoulder MR imaging including additional sequences for fat quantitation. Then, fat fraction maps were manually segmented, and custom software was used to compute the fat fraction. Goutallier scores were also obtained. The relationship between fat fraction and tendon tear severity and subject characteristics was assessed with descriptive statistics, analysis of variance, Student t test of different subgroups, and simple and multiple linear regression analysis.Results: Statistically higher supraspinatus fat fractions were observed in subgroups with tendon tears >3 cm, retraction >1 cm, age >50 years, body mass index (BMI) >30, higher Goutallier score, female gender, and longer symptom duration. A significant linear relationship was seen between RC fat fraction and tendon disease severity, age, and BMI but not symptom duration. Multiple regression models with fat fraction and tendon disease, age, BMI, and gender were significant for all 4 muscles (P < .001). The slope of fatty infiltration increase with age was reduced after adjustment for tendon disease, BMI, and gender.Conclusion: RC fat fraction assessed by chemical shift MR demonstrated a significant linear relationship with tendon tear severity, age, BMI, and gender but not with symptom duration. Published by Elsevier Inc. on behalf of Journal of Shoulder and Elbow Surgery Board of Trustees.