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A comparison of 3D ultrasound to MRI for the measurement and estimation of gastrocnemius muscle volume in adults and young people with and without cerebral palsy
Author(s) -
Noorkoiv Marika,
Theis Nicola,
Lavelle Grace
Publication year - 2019
Publication title -
clinical anatomy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 71
eISSN - 1098-2353
pISSN - 0897-3806
DOI - 10.1002/ca.23314
Subject(s) - medicine , cerebral palsy , ultrasound , 3d ultrasound , typically developing , gastrocnemius muscle , magnetic resonance imaging , standard error , limits of agreement , nuclear medicine , physical medicine and rehabilitation , anatomy , radiology , skeletal muscle , statistics , mathematics , autism , psychiatry
Muscle volume (MV) is an important parameter for understanding muscle morphology and adaptations to training, growth and pathology. In this study, we assessed the validity of freehand 3D ultrasound (3DUS) for measuring medial gastrocnemius MV in adults, typically developing (TD) children and children with cerebral palsy (CP). We also assessed the validity between our direct measures of MV and estimates derived from anatomical cross sectional area (ACSA) and muscle length (ML), using previously outlined methods. The medial gastrocnemius of all groups was scanned with 3DUS and MRI. Images from both methods were digitized to derive MV, ACSA and ML. Measured MV was compared between methods and compared to estimated MV derived from recently published algorithms. MV had a mean difference of −0.13% (standard error of estimate (SEE) = 2.23%, R 2 = 0.99) between MRI and 3DUS and 19.82% (SEE = 4.73% and R 2 = 0.99) and −3.11% (SEE = 6.55%, R 2 = 0.99) mean differences between the measured and estimated MV from two methods of estimation. The 3DUS is a valid method for the measurement of MV in adults, TD children and those with CP. Estimation methods of MV may be useful in clinical practice, but require further replication on various populations and careful methodological consideration. Clin. Anat. 32:319–327, 2019. © 2018 Wiley Periodicals, Inc.