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Quantitative ultrasound of the tongue: echo intensity is a potential biomarker of bulbar dysfunction in amyotrophic lateral sclerosis
Clinical Neurophysiology ( IF 4.7 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.clinph.2020.06.027
C E McIlduff 1 , M G Martucci 1 , C Shin 1 , K Qi 1 , A K Pacheck 1 , H Gutierrez 1 , M Mortreux 1 , S B Rutkove 1
Affiliation  

OBJECTIVES To learn if quantitative ultrasound (QUS) distinguishes the tongues of healthy participants and amyotrophic lateral sclerosis (ALS) patients by echo intensity (EI) and to evaluate if EI correlates with measures of bulbar function. METHODS Ultrasound was performed along the midline of the anterior tongue surface in 16 ALS patients and 16 age-matched controls using a linear hockey stick 16-7 MHz transducer. A region of interest was manually drawn and then EI was determined for the upper 1/3 of the muscle. For patients, the ALS functional rating scale - revised (ALSFRS-R) was used to calculate bulbar sub-scores and the Iowa Oral Performance Instrument (IOPI) was used to measure tongue strength. RESULTS EI was significantly higher in ALS patients than in healthy participants (49.8 versus 37.8 arbitrary units, p < 0.01). In the patient group, EI was negatively correlated with ALSFRS-R bulbar sub-score (RS = -0.65, p < 0.01). An inverse correlation between EI and tongue strength did not reach significance (RS = -0.34, p = 0.28). CONCLUSIONS This study suggests that EI can differentiate healthy from diseased tongue muscle, and correlates with a standard functional measure in ALS patients. SIGNIFICANCE Tongue EI may represent a novel biomarker for bulbar dysfunction in ALS.

中文翻译:

舌头的定量超声:回声强度是肌萎缩侧索硬化症延髓功能障碍的潜在生物标志物

目的 了解定量超声 (QUS) 是否通过回声强度 (EI) 区分健康参与者和肌萎缩侧索硬化症 (ALS) 患者的舌头,并评估 EI 是否与延髓功能测量相关。方法 使用线性曲棍球棒 16-7 MHz 换能器在 16 名 ALS 患者和 16 名年龄匹配的对照组中沿舌前表面中线进行超声检查。手动绘制感兴趣区域,然后确定肌肉上 1/3 的 EI。对于患者,使用 ALS 功能评定量表 - 修订版 (ALSFRS-R) 来计算延髓子评分,并使用爱荷华州口腔表现仪 (IOPI) 来测量舌头力量。结果 ALS 患者的 EI 显着高于健康参与者(49.8 对 37.8 任意单位,p < 0.01)。在患者组中,EI 与 ALSFRS-R 延髓子评分呈负相关(RS = -0.65,p < 0.01)。EI 和舌头力量之间的负相关没有达到显着性(RS = -0.34,p = 0.28)。结论 本研究表明,EI 可以区分健康和患病的舌肌,并与 ALS 患者的标准功能测量值相关。意义 舌头 EI 可能代表 ALS 延髓功能障碍的一种新型生物标志物。
更新日期:2020-10-01
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