Volume 62, Issue 2 pp. 457-467
Research Article

Multi-Parametric Quantitative MRI in the Early Differential Diagnosis of Ambulatory Children With Duchenne Muscular Dystrophy and Becker Muscular Dystrophy

Fei Peng

Fei Peng

Department of Radiology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China

Department of Radiology, Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China

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Huayan Xu

Huayan Xu

Department of Radiology, Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China

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Ting Xu

Ting Xu

Department of Radiology, Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China

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Ke Xu

Ke Xu

Department of Radiology, Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China

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Xiaotang Cai

Xiaotang Cai

Department of Pediatrics Neurology, West China Second University Hospital, Sichuan University, Chengdu, China

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Jiaoyang Li

Jiaoyang Li

Department of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan, China

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Heng Zhao

Corresponding Author

Heng Zhao

Department of Radiology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China

Correspondence:

Heng Zhao ([email protected])

Yingkun Guo ([email protected])

Wenhong Liu ([email protected])

Limin Liu ([email protected])

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Wenhong Liu

Corresponding Author

Wenhong Liu

Department of Radiology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China

Correspondence:

Heng Zhao ([email protected])

Yingkun Guo ([email protected])

Wenhong Liu ([email protected])

Limin Liu ([email protected])

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Yingkun Guo

Corresponding Author

Yingkun Guo

Department of Radiology, Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China

Correspondence:

Heng Zhao ([email protected])

Yingkun Guo ([email protected])

Wenhong Liu ([email protected])

Limin Liu ([email protected])

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Limin Liu

Corresponding Author

Limin Liu

Department of Ultrasound, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China

Correspondence:

Heng Zhao ([email protected])

Yingkun Guo ([email protected])

Wenhong Liu ([email protected])

Limin Liu ([email protected])

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First published: 04 March 2025

Funding: This work was supported by the Hunan Provincial Natural Science Foundation of China (2023JJ30552, 2025JJ81045).

ABSTRACT

Background

Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD), the most common dystrophinopathies, require distinct treatments. Corticosteroids are effective for DMD but less so for BMD. Early diagnosis can improve DMD outcomes and prevent BMD overtreatment. However, differentiating them in younger children with mild symptoms is challenging due to overlapping features.

Purpose

To evaluate the performance of multi-parametric quantitative MRI (qMRI) in early differentiation between BMD and DMD, particularly among younger patients in the mild disease stage.

Study Type

Prospective.

Subjects

121 DMD males (mean age 8.5 ± 1.6 years), 28 BMD males (9.7 ± 3.3 years), and 26 male healthy controls (HCs) (9.4 ± 2.7 years).

Field Strength/Sequence

3.0T/3-point Dixon (fast-spin-echo), T1-mapping (modified-Look-Locker-inversion-recovery), and T2-mapping (balance-steady-state-free-precession).

Assessment

qMRI measurements (fat fraction [FF], T1, and T2) in 18 pelvic and thigh muscles were conducted. A linearized NorthStar ambulatory assessment (NSAA) score was used to evaluate the function status, with a mild functional decline stage defined as a score of 76–100.

Statistical Tests

Mann–Whitney test, Kruskal–Wallis test, and Receiver operating characteristic curves. A P-value < 0.05 was considered statistically significant.

Results

In all subject groups, DMD exhibits significantly higher FF and T2 and lower T1 compared to BMD. The max differences in mean FF, T1, and T2 was 45.29%, 543 ms, and 31.0 ms, respectively. Overall, the area under curve (AUC) values for FF surpassed those for T2 and T1 in the majority of muscles. In the mild subgroup below 10 years old, DMD had significantly higher FF and T1 than BMD. The combination of FF and T1 in gluteus medius, rectus femoris, vastus lateralis, vastus intermedius, vastus medialis, and adductor magnus achieved higher AUCs (0.816–0.957) than FF (0.773–0.862) or T1 (0.701–0.819) in differentiating the two subgroups.

Data Conclusion

Multi-parametric qMRI demonstrates potential as an effective tool for early differentiation between DMD and BMD.

Evidence Level

2

Technical Efficacy

Stage 3

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