Quantitative ultrasound assessment of fatty infiltration of the rotator cuff muscles using backscatter coefficient.

IF 3.7 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING European Radiology Experimental Pub Date : 2024-10-22 DOI:10.1186/s41747-024-00522-5
Marco Toto-Brocchi, Yuanshan Wu, Saeed Jerban, Aiguo Han, Michael Andre, Sameer B Shah, Eric Y Chang
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Abstract

Background: To prospectively evaluate ultrasound backscatter coefficients (BSCs) of the supraspinatus and infraspinatus muscles and compare with Goutallier classification on magnetic resonance imaging (MRI).

Methods: Fifty-six participants had shoulder MRI exams and ultrasound exams of the supraspinatus and infraspinatus muscles. Goutallier MRI grades were determined and BSCs were measured. Group means were compared and the strength of relationships between the measures were determined. Using binarized Goutallier groups (0-2 versus 3-4), areas under the receiver operating characteristic curves (AUROCs) were calculated. The nearest integer cutoff value was determined using Youden's index.

Results: BSC values were significantly different among most Goutallier grades for the supraspinatus and infraspinatus muscles (both p < 0.001). Strong correlations were found between the BSC values and Goutallier grades for the supraspinatus (τb = 0.72, p < 0.001) and infraspinatus (τb = 0.79, p < 0.001) muscles. BSC showed excellent performance for classification of the binarized groups (0-2 versus 3-4) for both supraspinatus (AUROC = 0.98, p < 0.0001) and infraspinatus (AUROC = 0.98, p < 0.0001) muscles. Using a cutoff BSC value of -17 dB, sensitivity, specificity, and accuracy for severe fatty infiltration were 87.0%, 90.0%, and 87.5% for the supraspinatus muscle, and 93.6%, 87.5%, and 92.7% for the infraspinatus muscle.

Conclusion: BSC can be applied to the rotator cuff muscles for assessment of fatty infiltration. For both the supraspinatus and infraspinatus muscles, BSC values significantly increased with higher Goutallier grades and showed strong performance in distinguishing low versus high Goutallier grades.

Relevance statement: Fatty infiltration of the rotator cuff muscles can be quantified using BSC values, which are higher with increasing Goutallier grades.

Key points: Ultrasound BSC measurements are reliable for the quantification of muscle fatty infiltration. BCS values increased with higher Goutallier MRI grades. BCS values demonstrated high performance for distinguishing muscle fatty infiltration groups.

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利用反向散射系数对肩袖肌肉的脂肪浸润进行定量超声评估。
背景:前瞻性评估冈上肌和冈下肌的超声波反向散射系数(BSC),并与磁共振成像(MRI)上的Goutallier分类进行比较:方法:56 名参与者接受了肩部核磁共振成像检查和冈上肌与冈下肌超声波检查。确定 Goutallier MRI 分级并测量 BSC。对各组平均值进行比较,并确定测量值之间的关系强度。使用二值化的 Goutallier 组(0-2 与 3-4),计算接收者操作特征曲线下的面积 (AUROC)。使用尤登指数(Youden's index)确定最接近的整数截断值:结果:冈上肌和冈下肌的 BSC 值在大多数 Goutallier 等级之间存在明显差异(均为 p b = 0.72,p b = 0.79,p 结论:冈上肌和冈下肌的 BSC 值在大多数 Goutallier 等级之间存在明显差异(均为 p b = 0.72,p b = 0.79,p 结论):BSC 可用于肩袖肌肉脂肪浸润的评估。对于冈上肌和冈下肌,BSC 值随着 Goutallier 等级的升高而显著增加,并在区分低 Goutallier 等级和高 Goutallier 等级方面表现出色:肩袖肌肉的脂肪浸润可通过 BSC 值进行量化,随着 Goutallier 等级的增加,BSC 值也会增加:要点:超声 BSC 测量是量化肌肉脂肪浸润的可靠方法。BCS值随着Goutallier MRI分级的增加而增加。BCS值在区分肌肉脂肪浸润组别方面表现出很高的性能。
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来源期刊
European Radiology Experimental
European Radiology Experimental Medicine-Radiology, Nuclear Medicine and Imaging
CiteScore
6.70
自引率
2.60%
发文量
56
审稿时长
18 weeks
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