Estimating motor unit numbers from a CMAP scan: Repeatability study on three muscles at 15 centres

D. M. Sørensen; H. Bostock; A. Abrahao; A. Alaamel; H. C. Alaydin; M. Ballegaard; E. Boran; B. Cengiz; M. de Carvalho; null Dunker; A. Fuglsang-Frederiksen; C. C. Graffe; K. E. Jones; M. Kallio; S. Kalra; C. Krarup; T. Krøigård; R. Liguori; T. Lupescu; S. Maitland; J. M. Matamala; M. Moldovan; J. Moreno-Roco; K. B. Nilsen; L. Phung; M. O. Santos; A. C. Themistocleous; H. Uysal; V. Vacchiano; R. G. Whittaker; L. Zinman; H. Tankisi

doi:10.1016/j.clinph.2023.04.008

Estimating motor unit numbers from a CMAP scan: Repeatability study on three muscles at 15 centres

D. M. Sørensen, H. Bostock, A. Abrahao, A. Alaamel, H. C. Alaydin, M. Ballegaard, E. Boran, B. Cengiz, M. de Carvalho, Dunker, A. Fuglsang-Frederiksen, C. C. Graffe, K. E. Jones, M. Kallio, S. Kalra, C. Krarup, T. Krøigård, R. Liguori, T. Lupescu, S. MaitlandJ. M. Matamala, M. Moldovan, J. Moreno-Roco, K. B. Nilsen, L. Phung, M. O. Santos, A. C. Themistocleous, H. Uysal, V. Vacchiano, R. G. Whittaker, L. Zinman, H. Tankisi^*

^*Corresponding author for this work

Department of Clinical Medicine - Department of Clinical Neurophysiology

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

14 Citations (Scopus)

Abstract

Objective: To assess the repeatability and suitability for multicentre studies of MScanFit motor unit number estimation (MUNE), which involves modelling compound muscle action potential (CMAP) scans. Methods: Fifteen groups in 9 countries recorded CMAP scans twice, 1–2 weeks apart in healthy subjects from abductor pollicis brevis (APB), abductor digiti minimi (ADM) and tibialis anterior (TA) muscles. The original MScanFit program (MScanFit-1) was compared with a revised version (MScanFit-2), designed to accommodate different muscles and recording conditions by setting the minimal motor unit size as a function of maximum CMAP. Results: Complete sets of 6 recordings were obtained from 148 subjects. CMAP amplitudes differed significantly between centres for all muscles, and the same was true for MScanFit-1 MUNE. With MScanFit-2, MUNE differed less between centres but remained significantly different for APB. Coefficients of variation between repeats were 18.0% for ADM, 16.8% for APB, and 12.1% for TA. Conclusions: It is recommended for multicentre studies to use MScanFit-2 for analysis. TA provided the least variable MUNE values between subjects and the most repeatable within subjects. Significance: MScanFit was primarily devised to model the discontinuities in CMAP scans in patients and is less suitable for healthy subjects with smooth scans.

Original language	English
Journal	Clinical Neurophysiology
Volume	151
Pages (from-to)	92-99
Number of pages	8
ISSN	1388-2457
DOIs	https://doi.org/10.1016/j.clinph.2023.04.008
Publication status	Published - Jul 2023

Keywords

CMAP Scan
Motor unit number estimation
MScanFit
MUNE
Repeatability

Access to Document

10.1016/j.clinph.2023.04.008

Cite this

Sørensen, D. M., Bostock, H., Abrahao, A., Alaamel, A., Alaydin, H. C., Ballegaard, M., Boran, E., Cengiz, B., de Carvalho, M., Dunker, Fuglsang-Frederiksen, A., Graffe, C. C., Jones, K. E., Kallio, M., Kalra, S., Krarup, C., Krøigård, T., Liguori, R., Lupescu, T., ... Tankisi, H. (2023). Estimating motor unit numbers from a CMAP scan: Repeatability study on three muscles at 15 centres. Clinical Neurophysiology, 151, 92-99. https://doi.org/10.1016/j.clinph.2023.04.008

@article{99af73afb43640b2937593d07112c0bf,

title = "Estimating motor unit numbers from a CMAP scan: Repeatability study on three muscles at 15 centres",

abstract = "Objective: To assess the repeatability and suitability for multicentre studies of MScanFit motor unit number estimation (MUNE), which involves modelling compound muscle action potential (CMAP) scans. Methods: Fifteen groups in 9 countries recorded CMAP scans twice, 1–2 weeks apart in healthy subjects from abductor pollicis brevis (APB), abductor digiti minimi (ADM) and tibialis anterior (TA) muscles. The original MScanFit program (MScanFit-1) was compared with a revised version (MScanFit-2), designed to accommodate different muscles and recording conditions by setting the minimal motor unit size as a function of maximum CMAP. Results: Complete sets of 6 recordings were obtained from 148 subjects. CMAP amplitudes differed significantly between centres for all muscles, and the same was true for MScanFit-1 MUNE. With MScanFit-2, MUNE differed less between centres but remained significantly different for APB. Coefficients of variation between repeats were 18.0% for ADM, 16.8% for APB, and 12.1% for TA. Conclusions: It is recommended for multicentre studies to use MScanFit-2 for analysis. TA provided the least variable MUNE values between subjects and the most repeatable within subjects. Significance: MScanFit was primarily devised to model the discontinuities in CMAP scans in patients and is less suitable for healthy subjects with smooth scans.",

keywords = "CMAP Scan, Motor unit number estimation, MScanFit, MUNE, Repeatability",

author = "S{\o}rensen, {D. M.} and H. Bostock and A. Abrahao and A. Alaamel and Alaydin, {H. C.} and M. Ballegaard and E. Boran and B. Cengiz and {de Carvalho}, M. and Dunker and A. Fuglsang-Frederiksen and Graffe, {C. C.} and Jones, {K. E.} and M. Kallio and S. Kalra and C. Krarup and T. Kr{\o}ig{\aa}rd and R. Liguori and T. Lupescu and S. Maitland and Matamala, {J. M.} and M. Moldovan and J. Moreno-Roco and Nilsen, {K. B.} and L. Phung and Santos, {M. O.} and Themistocleous, {A. C.} and H. Uysal and V. Vacchiano and Whittaker, {R. G.} and L. Zinman and H. Tankisi",

year = "2023",

month = jul,

doi = "10.1016/j.clinph.2023.04.008",

language = "English",

volume = "151",

pages = "92--99",

journal = "Clinical Neurophysiology",

issn = "1388-2457",

publisher = "Elsevier Ireland Ltd",

}

Sørensen, DM, Bostock, H, Abrahao, A, Alaamel, A, Alaydin, HC, Ballegaard, M, Boran, E, Cengiz, B, de Carvalho, M, Dunker, , Fuglsang-Frederiksen, A, Graffe, CC, Jones, KE, Kallio, M, Kalra, S, Krarup, C, Krøigård, T, Liguori, R, Lupescu, T, Maitland, S, Matamala, JM, Moldovan, M, Moreno-Roco, J, Nilsen, KB, Phung, L, Santos, MO, Themistocleous, AC, Uysal, H, Vacchiano, V, Whittaker, RG, Zinman, L & Tankisi, H 2023, 'Estimating motor unit numbers from a CMAP scan: Repeatability study on three muscles at 15 centres', Clinical Neurophysiology, vol. 151, pp. 92-99. https://doi.org/10.1016/j.clinph.2023.04.008

TY - JOUR

T1 - Estimating motor unit numbers from a CMAP scan

T2 - Repeatability study on three muscles at 15 centres

AU - Sørensen, D. M.

AU - Bostock, H.

AU - Abrahao, A.

AU - Alaamel, A.

AU - Alaydin, H. C.

AU - Ballegaard, M.

AU - Boran, E.

AU - Cengiz, B.

AU - de Carvalho, M.

AU - Dunker, null

AU - Fuglsang-Frederiksen, A.

AU - Graffe, C. C.

AU - Jones, K. E.

AU - Kallio, M.

AU - Kalra, S.

AU - Krarup, C.

AU - Krøigård, T.

AU - Liguori, R.

AU - Lupescu, T.

AU - Maitland, S.

AU - Matamala, J. M.

AU - Moldovan, M.

AU - Moreno-Roco, J.

AU - Nilsen, K. B.

AU - Phung, L.

AU - Santos, M. O.

AU - Themistocleous, A. C.

AU - Uysal, H.

AU - Vacchiano, V.

AU - Whittaker, R. G.

AU - Zinman, L.

AU - Tankisi, H.

PY - 2023/7

Y1 - 2023/7

N2 - Objective: To assess the repeatability and suitability for multicentre studies of MScanFit motor unit number estimation (MUNE), which involves modelling compound muscle action potential (CMAP) scans. Methods: Fifteen groups in 9 countries recorded CMAP scans twice, 1–2 weeks apart in healthy subjects from abductor pollicis brevis (APB), abductor digiti minimi (ADM) and tibialis anterior (TA) muscles. The original MScanFit program (MScanFit-1) was compared with a revised version (MScanFit-2), designed to accommodate different muscles and recording conditions by setting the minimal motor unit size as a function of maximum CMAP. Results: Complete sets of 6 recordings were obtained from 148 subjects. CMAP amplitudes differed significantly between centres for all muscles, and the same was true for MScanFit-1 MUNE. With MScanFit-2, MUNE differed less between centres but remained significantly different for APB. Coefficients of variation between repeats were 18.0% for ADM, 16.8% for APB, and 12.1% for TA. Conclusions: It is recommended for multicentre studies to use MScanFit-2 for analysis. TA provided the least variable MUNE values between subjects and the most repeatable within subjects. Significance: MScanFit was primarily devised to model the discontinuities in CMAP scans in patients and is less suitable for healthy subjects with smooth scans.

AB - Objective: To assess the repeatability and suitability for multicentre studies of MScanFit motor unit number estimation (MUNE), which involves modelling compound muscle action potential (CMAP) scans. Methods: Fifteen groups in 9 countries recorded CMAP scans twice, 1–2 weeks apart in healthy subjects from abductor pollicis brevis (APB), abductor digiti minimi (ADM) and tibialis anterior (TA) muscles. The original MScanFit program (MScanFit-1) was compared with a revised version (MScanFit-2), designed to accommodate different muscles and recording conditions by setting the minimal motor unit size as a function of maximum CMAP. Results: Complete sets of 6 recordings were obtained from 148 subjects. CMAP amplitudes differed significantly between centres for all muscles, and the same was true for MScanFit-1 MUNE. With MScanFit-2, MUNE differed less between centres but remained significantly different for APB. Coefficients of variation between repeats were 18.0% for ADM, 16.8% for APB, and 12.1% for TA. Conclusions: It is recommended for multicentre studies to use MScanFit-2 for analysis. TA provided the least variable MUNE values between subjects and the most repeatable within subjects. Significance: MScanFit was primarily devised to model the discontinuities in CMAP scans in patients and is less suitable for healthy subjects with smooth scans.

KW - CMAP Scan

KW - Motor unit number estimation

KW - MScanFit

KW - MUNE

KW - Repeatability

UR - http://www.scopus.com/inward/record.url?scp=85159772140&partnerID=8YFLogxK

U2 - 10.1016/j.clinph.2023.04.008

DO - 10.1016/j.clinph.2023.04.008

M3 - Journal article

C2 - 37236129

AN - SCOPUS:85159772140

SN - 1388-2457

VL - 151

SP - 92

EP - 99

JO - Clinical Neurophysiology

JF - Clinical Neurophysiology

ER -

Estimating motor unit numbers from a CMAP scan: Repeatability study on three muscles at 15 centres

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this