Quantitative DTI assessment in human lumbar stabilization muscles at 3 T.

Abstract:

OBJECTIVES:To characterize diffusion tensor imaging (DTI) tensor eigenvalues (λ1, λ2, λ3), fractional anisotropy, mean diffusivity, and radial diffusivity in healthy lumbar musculature. METHODS:Seventeen healthy subjects (10 men, 7 women; mean age, 28 ± 7 years) were scanned using a 3.0-T magnetic resonance imaging. Axial DTI was performed using 15 diffusion directions (b = 400 mm/s) at the L4 level. Oswestry Low Back Pain and Godin Physical Activity questionnaires were administered to rule out underlying lower back problems. RESULTS:Skeletal muscle DTI metrics were similar to those previously published. All measurements showed low coefficients of variation, except for quadratus lumborum. Laterality was not significant. Significant sex differences were observed in the quadratus lumborum (P < 0.05). Significant correlations were found between subjects' weight and body mass index with fractional anisotropy and λ1 of the multifidus muscles. CONCLUSIONS:The DTI metrics in paraspinal muscles can be reliably measured and are influenced by body mass index and weight but not by age or physical activity.

journal_name

J Comput Assist Tomogr

authors

Jones GE,Kumbhare DA,Harish S,Noseworthy MD

doi

10.1097/RCT.0b013e3182772d66

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

98-104

issue

1

eissn

0363-8715

issn

1532-3145

pii

00004728-201301000-00015

journal_volume

37

pub_type

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