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Using Eulerian video magnification to enhance detection of fasciculations in people with amyotrophic lateral sclerosis
Author(s) -
Hillegondsberg Ludo,
Carr Jonathan,
Brey Naeem,
Henning Franclo
Publication year - 2017
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.25690
Subject(s) - fasciculation , amyotrophic lateral sclerosis , medicine , anesthesia , disease
This study seeks to determine whether the use of Eulerian video magnification (EVM) increases the detection of muscle fasciculations in people with amyotrophic lateral sclerosis (PALS) compared with direct clinical observation (DCO). Methods Thirty‐second‐long video recordings were taken of 9 body regions of 7 PALS and 7 controls, and fasciculations were counted by DCO during the same 30‐s period. The video recordings were then motion magnified and reviewed by 2 independent assessors. Results In PALS, median fasciculation count per body region was 1 by DCO (range 0–10) and 3 in the EVM recordings (range 0–15; P < 0.0001). EVM revealed more fasciculations than DCO in 61% of recordings. In controls, median fasciculation count was 0 for both DCO and EVM. Discussion Compared with DCO, EVM significantly increased the detection of fasciculations in body regions of PALS. When it is used to supplement clinical examination, EVM has the potential to facilitate the diagnosis of ALS. Muscle Nerve 56 : 1063–1067, 2017