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Lumbar annulus fibrosus biomechanical characterization in children by ultrasound shear wave elastography

Article dans une revue avec comité de lecture
Author
DUBOIS, Guillaume
GENNISSON, Jean-Luc
134910 Physique des ondes pour la médecine
194495 Université Claude Bernard Lyon 1 [UCBL]
TANTER, Mickael
134910 Physique des ondes pour la médecine
DUBOUSSET, Jean
464717 Chirurgie orthopédique et pédiatrique [Hôpital de la Timone - APHM]
ccSKALLI, Wafa
VIALLE, Raphaël
ccROUCH, Philippe
99538 Laboratoire de biomécanique [LBM]
247321 Laboratoire de Mécanique et Technologie [LMT]
ccVERGARI, Claudio

URI
http://hdl.handle.net/10985/11884
DOI
doi:10.1007/s00330-015-3911-0
Date
2016
Journal
European Journal of Radiology

Abstract

Objectives Intervertebral disc (IVD) is key to spine biomechanics, and it is often involved in the cascade leading to spinal deformities such as idiopathic scoliosis, especially during the growth spurt. Recent progress in elastographic techniques allowed access to noninvasively measure cervical IVD in adults; the aim of this study was to determine the feasibility and reliability of shear wave elastography in healthy children lumbar IVD. Methods Elastographic measurements were performed in thirty-one healthy children (6 to 17 years old), in the annulus fibrosus and in the transverse plane of L5-S1 or L4-L5 IVD. Reliability was determined by 3 experienced operators repeating measurements. Results Average shear wave speed in IVD was 2.9 ± 0.5 m/s; no significant correlations were observed with sex, age or body morphology. Intra-operator repeatability was 5.0 % while inter-operator reproducibility was 6.2 %. Intraclass correlation coefficient was higher than 0.9 for each operator. Conclusions Feasibility and reliability of IVD shear wave elastography was demonstrated. The measurement protocol is compatible with the clinical routine, and the results show the potential to give an insight into spine deformity progression and early detection.

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