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MRI DTI and PDFF as Biomarkers for Lower Motor Neuron Degeneration in ALS.
Frontiers in Neuroscience ( IF 3.2 ) Pub Date : 2021-08-26 , DOI: 10.3389/fnins.2021.682126
Thorsten Lichtenstein 1 , Alina Sprenger 2 , Kilian Weiss 1, 3 , Nils Große Hokamp 1 , David Maintz 1 , Marc Schlamann 1 , Gereon R Fink 2, 4 , Helmar C Lehmann 2 , Tobias D Henning 5
Affiliation  

OBJECTIVE To evaluate the utility of nerve magnetic resonance imaging (MRI), diffusion tensor imaging (DTI), and muscle MRI multi-echo Dixon for assessing lower motor neuron (LMN) degeneration in amyotrophic lateral sclerosis (ALS). METHODS In this prospective observational cohort study, 14 patients with ALS and 13 healthy controls underwent a multiparametric MRI protocol, including DTI of the sciatic nerve and assessment of muscle proton density fat fraction of the biceps femoris and the quadriceps femoris muscles by a multi-echo Dixon sequence. RESULTS In ALS patients, mean fractional anisotropy values of the sciatic nerve were significantly lower than those of healthy controls. The quadriceps femoris, but not the biceps femoris muscle, showed significantly higher intramuscular fat fractions in ALS. INTERPRETATION Our study provides evidence that multiparametric MRI protocols might help estimate structural nerve damage and neurogenic muscle changes in ALS.

中文翻译:

MRI DTI 和 PDFF 作为 ALS 下运动神经元变性的生物标志物。

目的 评估神经磁共振成像 (MRI)、弥散张量成像 (DTI) 和肌肉 MRI 多回波 Dixon 在评估肌萎缩侧索硬化症 (ALS) 下运动神经元 (LMN) 变性中的应用。方法 在这项前瞻性观察性队列研究中,14 名 ALS 患者和 13 名健康对照者接受了多参数 MRI 方案,包括坐骨神经 DTI 和通过多回波评估股二头肌和股四头肌肌肉质子密度脂肪分数狄克逊序列。结果 在 ALS 患者中,坐骨神经的平均分数各向异性值显着低于健康对照组。股四头肌,但不是股二头肌,在 ALS 中显示出显着更高的肌内脂肪分数。
更新日期:2021-08-26
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